Merge pull request #4821 from thinkyhead/rc_revert_to_raises

Z Raise/Clearance rather than Height

Marlin/Conditionals_post.h

         #define XY_PROBE_SPEED 4000
       #endif
     #endif
-    #if Z_PROBE_TRAVEL_HEIGHT > Z_PROBE_DEPLOY_HEIGHT
-      #define _Z_PROBE_DEPLOY_HEIGHT Z_PROBE_TRAVEL_HEIGHT
+    #if Z_CLEARANCE_BETWEEN_PROBES > Z_CLEARANCE_DEPLOY_PROBE
+      #define _Z_CLEARANCE_DEPLOY_PROBE Z_CLEARANCE_BETWEEN_PROBES
     #else
-      #define _Z_PROBE_DEPLOY_HEIGHT Z_PROBE_DEPLOY_HEIGHT
+      #define _Z_CLEARANCE_DEPLOY_PROBE Z_CLEARANCE_DEPLOY_PROBE
     #endif
   #else
     #undef X_PROBE_OFFSET_FROM_EXTRUDER
   #endif
 
   /**
-   * Z_HOMING_HEIGHT / Z_PROBE_TRAVEL_HEIGHT
+   * Z_HOMING_HEIGHT / Z_CLEARANCE_BETWEEN_PROBES
    */
   #ifndef Z_HOMING_HEIGHT
-    #ifndef Z_PROBE_TRAVEL_HEIGHT
+    #ifndef Z_CLEARANCE_BETWEEN_PROBES
       #define Z_HOMING_HEIGHT 0
     #else
-      #define Z_HOMING_HEIGHT Z_PROBE_TRAVEL_HEIGHT
+      #define Z_HOMING_HEIGHT Z_CLEARANCE_BETWEEN_PROBES
     #endif
   #endif
-  #ifndef Z_PROBE_TRAVEL_HEIGHT
-    #define Z_PROBE_TRAVEL_HEIGHT Z_HOMING_HEIGHT
+  #ifndef Z_CLEARANCE_BETWEEN_PROBES
+    #define Z_CLEARANCE_BETWEEN_PROBES Z_HOMING_HEIGHT
   #endif
 
   #if IS_KINEMATIC

Marlin/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   10 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/Marlin_main.cpp

         SERIAL_ECHOLNPGM(")");
       }
     #endif
+
     float z_dest = LOGICAL_Z_POSITION(z_raise);
+    if (zprobe_zoffset < 0) z_dest -= zprobe_zoffset;
+
     if (z_dest > current_position[Z_AXIS])
       do_blocking_move_to_z(z_dest);
   }
     if (endstops.z_probe_enabled == deploy) return false;
 
     // Make room for probe
-    do_probe_raise(_Z_PROBE_DEPLOY_HEIGHT);
+    do_probe_raise(_Z_CLEARANCE_DEPLOY_PROBE);
 
     // When deploying make sure BLTOUCH is not already triggered
     #if ENABLED(BLTOUCH)
 
       // If the nozzle is above the travel height then
       // move down quickly before doing the slow probe
-      float z = LOGICAL_Z_POSITION(Z_PROBE_TRAVEL_HEIGHT);
+      float z = LOGICAL_Z_POSITION(Z_CLEARANCE_BETWEEN_PROBES);
       if (z < current_position[Z_AXIS])
         do_blocking_move_to_z(z, MMM_TO_MMS(Z_PROBE_SPEED_FAST));
 
     float old_feedrate_mm_s = feedrate_mm_s;
 
     // Ensure a minimum height before moving the probe
-    do_probe_raise(Z_PROBE_TRAVEL_HEIGHT);
+    do_probe_raise(Z_CLEARANCE_BETWEEN_PROBES);
 
     // Move to the XY where we shall probe
     #if ENABLED(DEBUG_LEVELING_FEATURE)
 
     float measured_z = run_z_probe();
 
-    if (stow) {
+    if (!stow)
+      do_probe_raise(Z_CLEARANCE_BETWEEN_PROBES);
+    else
       if (STOW_PROBE()) return NAN;
-    }
-    else {
-      #if ENABLED(DEBUG_LEVELING_FEATURE)
-        if (DEBUGGING(LEVELING)) SERIAL_ECHOLNPGM("> do_probe_raise");
-      #endif
-      do_probe_raise(Z_PROBE_TRAVEL_HEIGHT);
-    }
 
     if (verbose_level > 2) {
       SERIAL_PROTOCOLPGM("Bed X: ");
     feedrate_mm_s = homing_feedrate_mm_s[X_AXIS];
 
     current_position[Z_AXIS] = MESH_HOME_SEARCH_Z
-      #if Z_PROBE_TRAVEL_HEIGHT > Z_HOMING_HEIGHT
-        + Z_PROBE_TRAVEL_HEIGHT
+      #if Z_CLEARANCE_BETWEEN_PROBES > Z_HOMING_HEIGHT
+        + Z_CLEARANCE_BETWEEN_PROBES
       #elif Z_HOMING_HEIGHT > 0
         + Z_HOMING_HEIGHT
       #endif
     current_position[Y_AXIS] = LOGICAL_Y_POSITION(y);
     line_to_current_position();
 
-    #if Z_PROBE_TRAVEL_HEIGHT > 0 || Z_HOMING_HEIGHT > 0
+    #if Z_CLEARANCE_BETWEEN_PROBES > 0 || Z_HOMING_HEIGHT > 0
       current_position[Z_AXIS] = LOGICAL_Z_POSITION(MESH_HOME_SEARCH_Z);
       line_to_current_position();
     #endif
         else {
           // One last "return to the bed" (as originally coded) at completion
           current_position[Z_AXIS] = MESH_HOME_SEARCH_Z
-            #if Z_PROBE_TRAVEL_HEIGHT > Z_HOMING_HEIGHT
-              + Z_PROBE_TRAVEL_HEIGHT
+            #if Z_CLEARANCE_BETWEEN_PROBES > Z_HOMING_HEIGHT
+              + Z_CLEARANCE_BETWEEN_PROBES
             #elif Z_HOMING_HEIGHT > 0
               + Z_HOMING_HEIGHT
             #endif
 
     #endif // AUTO_BED_LEVELING_3POINT
 
-    // Raise to _Z_PROBE_DEPLOY_HEIGHT. Stow the probe.
+    // Raise to _Z_CLEARANCE_DEPLOY_PROBE. Stow the probe.
     if (STOW_PROBE()) return;
 
     // Restore state after probing

Marlin/SanityCheck.h

 #elif defined(MIN_Z_HEIGHT_FOR_HOMING)
   #error "MIN_Z_HEIGHT_FOR_HOMING is now Z_HOMING_HEIGHT. Please update your configuration."
 #elif defined(Z_RAISE_BEFORE_PROBING) || defined(Z_RAISE_AFTER_PROBING)
-  #error "Z_RAISE_(BEFORE|AFTER)_PROBING are deprecated. Use Z_PROBE_DEPLOY_HEIGHT instead."
+  #error "Z_RAISE_(BEFORE|AFTER)_PROBING are deprecated. Use Z_CLEARANCE_DEPLOY_PROBE instead."
 #elif defined(Z_RAISE_PROBE_DEPLOY_STOW) || defined(Z_RAISE_BETWEEN_PROBINGS)
-  #error "Z_RAISE_PROBE_DEPLOY_STOW and Z_RAISE_BETWEEN_PROBINGS are now Z_PROBE_DEPLOY_HEIGHT and Z_PROBE_TRAVEL_HEIGHT Please update your configuration."
+  #error "Z_RAISE_PROBE_DEPLOY_STOW and Z_RAISE_BETWEEN_PROBINGS are now Z_CLEARANCE_DEPLOY_PROBE and Z_CLEARANCE_BETWEEN_PROBES. Please update your configuration."
+#elif defined(Z_PROBE_DEPLOY_HEIGHT) || defined(Z_PROBE_TRAVEL_HEIGHT)
+  #error "Z_PROBE_DEPLOY_HEIGHT and Z_PROBE_TRAVEL_HEIGHT are now Z_CLEARANCE_DEPLOY_PROBE and Z_CLEARANCE_BETWEEN_PROBES. Please update your configuration."
 #elif !defined(MIN_STEPS_PER_SEGMENT)
   #error Please replace "const int dropsegments" with "#define MIN_STEPS_PER_SEGMENT" (and increase by 1) in Configuration_adv.h.
 #elif defined(PREVENT_DANGEROUS_EXTRUDE)
   /**
    * Make sure Z raise values are set
    */
-  #if !defined(Z_PROBE_DEPLOY_HEIGHT)
-    #error "You must set Z_PROBE_DEPLOY_HEIGHT in your configuration."
-  #elif !defined(Z_PROBE_TRAVEL_HEIGHT)
-    #error "You must set Z_PROBE_TRAVEL_HEIGHT in your configuration."
-  #elif Z_PROBE_DEPLOY_HEIGHT < 0
-    #error "Probes need Z_PROBE_DEPLOY_HEIGHT >= 0."
-  #elif Z_PROBE_TRAVEL_HEIGHT < 0
-    #error "Probes need Z_PROBE_TRAVEL_HEIGHT >= 0."
+  #if !defined(Z_CLEARANCE_DEPLOY_PROBE)
+    #error "You must define Z_CLEARANCE_DEPLOY_PROBE in your configuration."
+  #elif !defined(Z_CLEARANCE_BETWEEN_PROBES)
+    #error "You must define Z_CLEARANCE_BETWEEN_PROBES in your configuration."
+  #elif Z_CLEARANCE_DEPLOY_PROBE < 0
+    #error "Probes need Z_CLEARANCE_DEPLOY_PROBE >= 0."
+  #elif Z_CLEARANCE_BETWEEN_PROBES < 0
+    #error "Probes need Z_CLEARANCE_BETWEEN_PROBES >= 0."
   #endif
 
 #else

Marlin/example_configurations/Cartesio/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/Felix/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/Felix/DUAL/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/Hephestos/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/Hephestos_2/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT  5 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  2 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   5 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES 2 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/K8200/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/K8400/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

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

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/RepRapWorld/Megatronics/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/RigidBot/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/SCARA/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/TAZ4/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/WITBOX/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/adafruit/ST7565/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/delta/biv2.5/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 50 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   50 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/delta/generic/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/delta/kossel_mini/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 50 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   50 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/delta/kossel_pro/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 100 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT   5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   100 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES   5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/delta/kossel_xl/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 20 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT 10 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   20 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES 10 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/makibox/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset

Marlin/example_configurations/tvrrug/Round2/Configuration.h

 // Enable Z Probe Repeatability test to see how accurate your probe is
 //#define Z_MIN_PROBE_REPEATABILITY_TEST
 
-//
-// Minimum heights for the probe to deploy/stow and travel.
-// These values specify the distance from the NOZZLE to the BED.
-//
-#define Z_PROBE_DEPLOY_HEIGHT 15 // Z position for the probe to deploy/stow
-#define Z_PROBE_TRAVEL_HEIGHT  5 // Z position for travel between points
+/**
+ * Z probes require clearance when deploying, stowing, and moving between
+ * probe points to avoid hitting the bed and other hardware.
+ * Servo-mounted probes require extra space for the arm to rotate.
+ * Inductive probes need space to keep from triggering early.
+ *
+ * Use these settings to specify the distance (mm) to raise the probe (or
+ * lower the bed). The values set here apply over and above any (negative)
+ * probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
+ * Only integer values >= 1 are valid here.
+ *
+ * Example: `M851 Z-5` with a CLEARANCE of 4  =>  9mm from bed to nozzle.
+ *     But: `M851 Z+1` with a CLEARANCE of 2  =>  2mm from bed to nozzle.
+ */
+#define Z_CLEARANCE_DEPLOY_PROBE   15 // Z Clearance for Deploy/Stow
+#define Z_CLEARANCE_BETWEEN_PROBES  5 // Z Clearance between probe points
 
 //
 // For M851 give a range for adjusting the Z probe offset