Filament-change.g

gavatron3000

Hey just curious if anyone else has had issues with getting filament-change.g to work? I've got the macro in the /sys/ folder but it won't use it. I'm sure I've missed setting something up. I'm on v2.03b3

brunofporto

@gavatron3000 said in Filament-change.g:

filament-change.g

I never tried it because of the pause.g is working ok for both cases for me. But the gcode description page says that:

"This command behaves like M226 except that if macro file filament-change.g exists in /sys on the SD card, it is run in preference to pause.g. Supported in firmware 2.02 and later."

So, I think that, if you have an empty filament-change.g it will do nothing (by executing it when the M600 is executed) instead of using the pause.g

gavatron3000

Yes exactly, but I've got gcode in my filament-change.g macro and it still just pauses

Phaedrux

Just curious what the contents of pause.g and filament-change.g are.

gavatron3000

Pause.g
pause.g
; called when a print from SD card is paused
;
; generated by RepRapFirmware Configuration Tool on Mon Feb 19 2018 19:56:04 GMT+1100 (AEDT)
M83 ; relative extruder moves
G1 E-5 F2000 ; retract 5mm of filament
G91 ; relative positioning
G1 Z10 F360 ; lift Z by 5mm
G90 ; absolute positioning
G1 X0 Y0 F6000 ; go to X=0 Y=0

Filament-change.g
T-1 ; deselect tool to unload filament
G90 ; absolute moves
G1 U75 F2000 ; move selector out of the way
G1 V900 F5000 ; drive filament out the front of MMU2
G1 W78 F10000 ; move W axis to safe position
M291 P"remove old filament, load new filament and press OK" R"Filament has run out" S2 ; display message to change filament Filament has run out
T R1 ; select previous tool
M24 ; resume print

dc42

@gavatron3000 said in Filament-change.g:

Hey just curious if anyone else has had issues with getting filament-change.g to work? I've got the macro in the /sys/ folder but it won't use it. I'm sure I've missed setting something up. I'm on v2.03b3

Is this when you send M600, or when a filament monitor detects a problem and pauses the print?

gavatron3000

to be honest ive never manually sent a M600, im refering to when a filament out situation is detected during a print

dc42

I don't think that running filament-change.g automatically on a filament error would suit most people, because many filament errors are not caused by running out of filament. Perhaps we should run a new file such as filament-error.g instead? That file could use M291 to ask the user whether he/she wants to change the filament or not.

gavatron3000

Ok so I've misinterpreted the behaviour of the filament-change.g.
So when the filament runs out a pause.g is called then when I intervene I'm meant to run M600? Woops I didn't realise

Phaedrux

@gavatron3000 No, i don't think that's quite it either.

Originally, to do a filament change on the Duet you would use M226 inserted into your print gcode to pause the print with pause.g at a specific layer and you would manually change the filament.

Marlin was using M600 which let you specify a few more options specific to filament changes.

So when M600 was implemented in RRF it was meant to work similar to pause.g but would let you specify what you wanted to happen in filament-change.g. Which would keep your M226 pause.g seperate and more generic, and M600 filament-change.g specific to how you wanted to change filament.

Filament runout detection is totally separate from either of these, though in practice you could execute behaviour of either.

gavatron3000

Hmmmm. So whats the trigger for it to function thats the bit I'm missing or haven't understood

Phaedrux

You'd place M600 in your gcode file. Usually at a layer change to do a color swap.

gavatron3000

Ok no worries