95 lines
1.7 KiB
Markdown
95 lines
1.7 KiB
Markdown
Startup sequence
|
|
================
|
|
|
|
When initialized, MMU sends
|
|
|
|
- MMU => 'start\n'
|
|
|
|
We follow with
|
|
|
|
- MMU <= 'S1\n'
|
|
- MMU => 'ok*Firmware version*\n'
|
|
- MMU <= 'S2\n'
|
|
- MMU => 'ok*Build number*\n'
|
|
|
|
#if (12V_mode)
|
|
|
|
- MMU <= 'M1\n'
|
|
- MMU => 'ok\n'
|
|
|
|
#endif
|
|
|
|
- MMU <= 'P0\n'
|
|
- MMU => '*FINDA status*\n'
|
|
|
|
Now we are sure MMU is available and ready. If there was a timeout or other communication problem somewhere, printer will be killed.
|
|
|
|
- *Firmware version* is an integer value, but we don't care about it
|
|
- *Build number* is an integer value and has to be >=126, or =>132 if 12V mode is enabled
|
|
- *FINDA status* is 1 if the filament is loaded to the extruder, 0 otherwise
|
|
|
|
|
|
*Build number* is checked against the required value, if it does not match, printer is halted.
|
|
|
|
|
|
|
|
Toolchange
|
|
==========
|
|
|
|
- MMU <= 'T*Filament index*\n'
|
|
|
|
MMU sends
|
|
|
|
- MMU => 'ok\n'
|
|
|
|
as soon as the filament is fed down to the extruder. We follow with
|
|
|
|
- MMU <= 'C0\n'
|
|
|
|
MMU will feed a few more millimeters of filament for the extruder gears to grab.
|
|
When done, the MMU sends
|
|
|
|
- MMU => 'ok\n'
|
|
|
|
We don't wait for a response here but immediately continue with the next gcode which should
|
|
be one or more extruder moves to feed the filament into the hotend.
|
|
|
|
|
|
FINDA status
|
|
============
|
|
|
|
- MMU <= 'P0\n'
|
|
- MMU => '*FINDA status*\n'
|
|
|
|
*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.
|
|
|
|
|
|
|
|
Load filament
|
|
=============
|
|
|
|
- MMU <= 'L*Filament index*\n'
|
|
|
|
MMU will feed filament down to the extruder, when done
|
|
|
|
- MMU => 'ok\n'
|
|
|
|
|
|
Unload filament
|
|
=============
|
|
|
|
- MMU <= 'U0\n'
|
|
|
|
MMU will retract current filament from the extruder, when done
|
|
|
|
- MMU => 'ok\n'
|
|
|
|
|
|
|
|
Eject filament
|
|
==============
|
|
|
|
- MMU <= 'E*Filament index*\n'
|
|
- MMU => 'ok\n'
|
|
|