When initialized, MMU sends
We follow with
Now we are sure MMU is available and ready. If there was a timeout or other communication problem somewhere, printer will be killed.
Build number is checked against the required value, if it does not match, printer is halted.
MMU sends
as soon as the filament is fed down to the extruder. We follow with
MMU will feed a few more millimeters of filament for the extruder gears to grab. When done, the MMU sends
We don’t wait for a response here but immediately continue with the next G-code which should be one or more extruder moves to feed the filament into the hotend.
FINDA status is 1 if the is filament loaded to the extruder, 0 otherwise. This could be used as filament runout sensor if probed regularly.
MMU will feed filament down to the extruder, when done
MMU will retract current filament from the extruder, when done