Merge remote-tracking branch 'MarlinFirmware/RCBugFix' into EMartinez-Changes

Marlin/Configuration.h

@@ -725,13 +725,15 @@
 #define Y_MAX_POS 200
 #define Z_MAX_POS 200
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1418,7 +1420,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/Marlin_main.cpp

@@ -1189,15 +1189,11 @@ inline bool code_has_value() {
 }
 
 inline float code_value_float() {
-  float ret;
   char* e = strchr(seen_pointer, 'E');
-  if (e) {
-    *e = 0;
-    ret = strtod(seen_pointer + 1, NULL);
-    *e = 'E';
-  }
-  else
-    ret = strtod(seen_pointer + 1, NULL);
+  if (!e) return strtod(seen_pointer + 1, NULL);
+  *e = 0;
+  float ret = strtod(seen_pointer + 1, NULL);
+  *e = 'E';
   return ret;
 }
 

Marlin/SanityCheck.h

@@ -244,14 +244,20 @@
     #error "FILAMENT_RUNOUT_SENSOR requires FIL_RUNOUT_PIN."
   #elif DISABLED(SDSUPPORT) && DISABLED(PRINTJOB_TIMER_AUTOSTART)
     #error "FILAMENT_RUNOUT_SENSOR requires SDSUPPORT or PRINTJOB_TIMER_AUTOSTART."
+  #elif DISABLED(FILAMENT_CHANGE_FEATURE)
+    static_assert(NULL == strstr(FILAMENT_RUNOUT_SCRIPT, "M600"), "FILAMENT_CHANGE_FEATURE is required to use M600 with FILAMENT_RUNOUT_SENSOR.");
   #endif
 #endif
 
 /**
  * Filament Change with Extruder Runout Prevention
  */
-#if ENABLED(FILAMENT_CHANGE_FEATURE) && ENABLED(EXTRUDER_RUNOUT_PREVENT)
-  #error "EXTRUDER_RUNOUT_PREVENT is incompatible with FILAMENT_CHANGE_FEATURE."
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #if DISABLED(ULTIPANEL)
+    #error "FILAMENT_CHANGE_FEATURE currently requires an LCD controller."
+  #elif ENABLED(EXTRUDER_RUNOUT_PREVENT)
+    #error "EXTRUDER_RUNOUT_PREVENT is incompatible with FILAMENT_CHANGE_FEATURE."
+  #endif
 #endif
 
 /**

Marlin/Sd2Card.cpp

@@ -31,6 +31,10 @@
 #if ENABLED(SDSUPPORT)
 #include "Sd2Card.h"
 
+#if ENABLED(USE_WATCHDOG)
+  #include "watchdog.h"
+#endif
+
 //------------------------------------------------------------------------------
 #if DISABLED(SOFTWARE_SPI)
   // functions for hardware SPI
@@ -299,6 +303,12 @@ bool Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
   uint16_t t0 = (uint16_t)millis();
   uint32_t arg;
 
+  // If init takes more than 4s it could trigger
+  // watchdog leading to a reboot loop.
+  #if ENABLED(USE_WATCHDOG)
+    watchdog_reset();
+  #endif
+
   // set pin modes
   pinMode(chipSelectPin_, OUTPUT);
   chipSelectHigh();

Marlin/example_configurations/Cartesio/Configuration.h

@@ -725,13 +725,15 @@
 #define Y_MAX_POS 270
 #define Z_MAX_POS 400
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1418,7 +1420,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/Felix/Configuration.h

@@ -708,13 +708,15 @@
 #define Y_MAX_POS 205
 #define Z_MAX_POS 235
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1401,7 +1403,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/Felix/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/Felix/DUAL/Configuration.h

@@ -708,13 +708,15 @@
 #define Y_MAX_POS 205
 #define Z_MAX_POS 235
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1401,7 +1403,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/Hephestos/Configuration.h

@@ -717,13 +717,15 @@
 #define Y_MAX_POS 210
 #define Z_MAX_POS 180
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1410,7 +1412,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/Hephestos/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/Hephestos_2/Configuration.h

@@ -719,13 +719,15 @@
 #define Y_MAX_POS 297
 #define Z_MAX_POS 210
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1412,7 +1414,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/Hephestos_2/Configuration_adv.h

@@ -642,33 +642,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/K8200/Configuration.h

@@ -754,13 +754,15 @@
 #define Y_MAX_POS 200
 #define Z_MAX_POS 200
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1452,7 +1454,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/K8400/Configuration.h

@@ -725,13 +725,15 @@
 #define Y_MAX_POS 200
 #define Z_MAX_POS 190
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1418,7 +1420,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/K8400/Dual-head/Configuration.h

@@ -725,13 +725,15 @@
 #define Y_MAX_POS 200
 #define Z_MAX_POS 190
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1418,7 +1420,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

@@ -725,13 +725,15 @@
 #define Y_MAX_POS 200
 #define Z_MAX_POS 200
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1418,7 +1420,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/RigidBot/Configuration.h

@@ -724,13 +724,15 @@
 #define Y_MAX_POS 248  // RigidBot regular is 248mm, RigitBot Big is 304mm
 #define Z_MAX_POS 254  // RigidBot regular and Big are 254mm
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1419,7 +1421,7 @@
 //
 #define NUM_SERVOS 0 // DGlass3D - Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/RigidBot/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/SCARA/Configuration.h

@@ -740,13 +740,15 @@
 #define Y_MAX_POS 200
 #define Z_MAX_POS 225
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1433,7 +1435,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/SCARA/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/TAZ4/Configuration.h

@@ -746,13 +746,15 @@
 #define Y_MAX_POS 275
 #define Z_MAX_POS 250
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1439,7 +1441,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/WITBOX/Configuration.h

@@ -717,13 +717,15 @@
 #define Y_MAX_POS 210
 #define Z_MAX_POS 200
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1410,7 +1412,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/WITBOX/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/adafruit/ST7565/Configuration.h

@@ -725,13 +725,15 @@
 #define Y_MAX_POS 200
 #define Z_MAX_POS 200
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1418,7 +1420,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/delta/generic/Configuration.h

@@ -811,13 +811,15 @@
 #define Y_MAX_POS DELTA_PRINTABLE_RADIUS
 #define Z_MAX_POS MANUAL_Z_HOME_POS
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1505,7 +1507,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/delta/generic/Configuration_adv.h

@@ -661,33 +661,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/delta/kossel_mini/Configuration.h

@@ -814,13 +814,15 @@
 #define Y_MAX_POS DELTA_PRINTABLE_RADIUS
 #define Z_MAX_POS MANUAL_Z_HOME_POS
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1508,7 +1510,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

@@ -661,33 +661,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/delta/kossel_pro/Configuration.h

@@ -813,13 +813,15 @@
 #define Y_MAX_POS DELTA_PRINTABLE_RADIUS
 #define Z_MAX_POS MANUAL_Z_HOME_POS
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1507,7 +1509,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h

@@ -666,33 +666,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/delta/kossel_xl/Configuration.h

@@ -817,13 +817,15 @@
 #define Y_MAX_POS DELTA_PRINTABLE_RADIUS
 #define Z_MAX_POS MANUAL_Z_HOME_POS
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1511,7 +1513,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

@@ -661,33 +661,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/makibox/Configuration.h

@@ -728,13 +728,15 @@
 #define Y_MAX_POS 150
 #define Z_MAX_POS 86
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1421,7 +1423,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/makibox/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/example_configurations/tvrrug/Round2/Configuration.h

@@ -721,13 +721,15 @@
 #define Y_MAX_POS 205
 #define Z_MAX_POS 120
 
-//===========================================================================
-//========================= Filament Runout Sensor ==========================
-//===========================================================================
-//#define FILAMENT_RUNOUT_SENSOR // Uncomment for defining a filament runout sensor such as a mechanical or opto endstop to check the existence of filament
-                                 // RAMPS-based boards use SERVO3_PIN. For other boards you may need to define FIL_RUNOUT_PIN.
-                                 // It is assumed that when logic high = filament available
-                                 //                    when logic  low = filament ran out
+/**
+ * Filament Runout Sensor
+ * A mechanical or opto endstop is used to check for the presence of filament.
+ *
+ * RAMPS-based boards use SERVO3_PIN.
+ * For other boards you may need to define FIL_RUNOUT_PIN.
+ * By default the firmware assumes HIGH = has filament, LOW = ran out
+ */
+//#define FILAMENT_RUNOUT_SENSOR
 #if ENABLED(FILAMENT_RUNOUT_SENSOR)
   #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
   #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined.
@@ -1414,7 +1416,7 @@
 //
 //#define NUM_SERVOS 3 // Servo index starts with 0 for M280 command
 
-// Delay (in microseconds) before the next move will start, to give the servo time to reach its target angle.
+// Delay (in milliseconds) before the next move will start, to give the servo time to reach its target angle.
 // 300ms is a good value but you can try less delay.
 // If the servo can't reach the requested position, increase it.
 #define SERVO_DELAY 300

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

@@ -659,33 +659,38 @@
   #define RETRACT_RECOVER_FEEDRATE 8     //default feedrate for recovering from retraction (mm/s)
 #endif
 
-// Add support for experimental filament exchange support M600; requires display
-#if ENABLED(ULTIPANEL)
-  // #define FILAMENT_CHANGE_FEATURE             // Enable filament exchange menu and M600 g-code (used for runout sensor too)
-  #if ENABLED(FILAMENT_CHANGE_FEATURE)
-    #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
-    #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
-    #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
-    #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
-    #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
-    #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
-                                                // It is a short retract used immediately after print interrupt before move to filament exchange position
-    #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
-    #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
-                                                // Longer length for bowden printers to unload filament from whole bowden tube,
-                                                // shorter lenght for printers without bowden to unload filament from extruder only,
-                                                // 0 to disable unloading for manual unloading
-    #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
-    #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
-                                                // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
-                                                // Short or zero length for printers without bowden where loading is not used
-    #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
-    #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
-                                                // 0 to disable for manual extrusion
-                                                // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
-                                                // or until outcoming filament color is not clear for filament color change
-    #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
-  #endif
+/**
+ * Filament Change
+ * Experimental filament change support.
+ * Adds the GCode M600 for initiating filament change.
+ *
+ * Requires an LCD display.
+ * This feature is required for the default FILAMENT_RUNOUT_SCRIPT.
+ */
+//#define FILAMENT_CHANGE_FEATURE
+#if ENABLED(FILAMENT_CHANGE_FEATURE)
+  #define FILAMENT_CHANGE_X_POS 3             // X position of hotend
+  #define FILAMENT_CHANGE_Y_POS 3             // Y position of hotend
+  #define FILAMENT_CHANGE_Z_ADD 10            // Z addition of hotend (lift)
+  #define FILAMENT_CHANGE_XY_FEEDRATE 100     // X and Y axes feedrate in mm/s (also used for delta printers Z axis)
+  #define FILAMENT_CHANGE_Z_FEEDRATE 5        // Z axis feedrate in mm/s (not used for delta printers)
+  #define FILAMENT_CHANGE_RETRACT_LENGTH 2    // Initial retract in mm
+                                              // It is a short retract used immediately after print interrupt before move to filament exchange position
+  #define FILAMENT_CHANGE_RETRACT_FEEDRATE 60 // Initial retract feedrate in mm/s
+  #define FILAMENT_CHANGE_UNLOAD_LENGTH 100   // Unload filament length from hotend in mm
+                                              // Longer length for bowden printers to unload filament from whole bowden tube,
+                                              // shorter lenght for printers without bowden to unload filament from extruder only,
+                                              // 0 to disable unloading for manual unloading
+  #define FILAMENT_CHANGE_UNLOAD_FEEDRATE 10  // Unload filament feedrate in mm/s - filament unloading can be fast
+  #define FILAMENT_CHANGE_LOAD_LENGTH 0       // Load filament length over hotend in mm
+                                              // Longer length for bowden printers to fast load filament into whole bowden tube over the hotend,
+                                              // Short or zero length for printers without bowden where loading is not used
+  #define FILAMENT_CHANGE_LOAD_FEEDRATE 10    // Load filament feedrate in mm/s - filament loading into the bowden tube can be fast
+  #define FILAMENT_CHANGE_EXTRUDE_LENGTH 50   // Extrude filament length in mm after filament is load over the hotend,
+                                              // 0 to disable for manual extrusion
+                                              // Filament can be extruded repeatedly from the filament exchange menu to fill the hotend,
+                                              // or until outcoming filament color is not clear for filament color change
+  #define FILAMENT_CHANGE_EXTRUDE_FEEDRATE 3  // Extrude filament feedrate in mm/s - must be slower than load feedrate
 #endif
 
 /******************************************************************************\

Marlin/pins_K8400.h

@@ -65,3 +65,4 @@
 //
 #undef PS_ON_PIN
 #undef KILL_PIN
+#undef SD_DETECT_PIN

Marlin/pins_RIGIDBOARD.h

@@ -33,6 +33,12 @@
   #define Z_MIN_PROBE_PIN  19    // Z-MAX pin J14 End Stops
 #endif
 
+//
+// MOSFET changes
+//
+#define RAMPS_D10_PIN       9 // EXTRUDER 1
+#define MOSFET_D_PIN       12 // EXTRUDER 2 or FAN
+
 #include "pins_RAMPS.h"
 
 //
@@ -76,9 +82,6 @@
 //
 // Heaters / Fans
 //
-#define RAMPS_D10_PIN       9 // EXTRUDER 1
-#define MOSFET_D_PIN       12 // EXTRUDER 2 or FAN
-
 #undef  HEATER_BED_PIN
 #define HEATER_BED_PIN     10
 

Marlin/ultralcd.cpp

@@ -444,7 +444,7 @@ uint16_t max_display_update_time = 0;
   inline void lcd_wait_for_homing() {
     no_reentrance = true;
     while (!axis_homed[X_AXIS] || !axis_homed[Y_AXIS] || !axis_homed[Z_AXIS]) idle();
-    no_reentrance = true;
+    no_reentrance = false;
   }
 
   void lcd_return_to_status() { lcd_goto_screen(lcd_status_screen); }
@@ -1403,7 +1403,7 @@ KeepDrawing:
     // Cooldown
     //
     bool has_heat = false;
-    HOTEND_LOOP() if (thermalManager.target_temperature[e]) { has_heat = true; break; }
+    HOTEND_LOOP() if (thermalManager.target_temperature[HOTEND_INDEX]) { has_heat = true; }
     #if HAS_TEMP_BED
       if (thermalManager.target_temperature_bed) has_heat = true;
     #endif