Problem with powering on with M80

dek

I'm trying to have the printer power on when I send it a file to print from Cura with the DuetRRF plugin. I'm sending the M80 in the start script but this doesn't work because I'm guessing it needs to power on earlier than this in the printing process. Is there any way of trigger the M80 when the printer receives a print command?

Veti

Did you open the gcode and look where the M80 command is?
in slicer i have it as the first command in start g code and its working fine.

dc42

You might need to include a G4 delay command after the M80 command to give the stepper drivers time to power up.

dek

I have the start script stored on the duet and referencing it in the slicer with "M98 P/macros/Scripts/start.g"

And start.g starts with:
M80 ; Power On
G4 S5 ; Dwell for 5 seconds

But the printer doesn't even power up. However, sending the M80 command in the G-code console works.

Veti

try adding the m80 directly

dc42

@dek said in Problem with powering on with M80:

I have the start script stored on the duet and referencing it in the slicer with "M98 P/macros/Scripts/start.g"

And start.g starts with:
M80 ; Power On
G4 S5 ; Dwell for 5 seconds

But the printer doesn't even power up. However, sending the M80 command in the G-code console works.

Is the M98 command right at the start of the GCode file generated by the slicer? I have a suspicion that if you look, you will find there there are some heating commands before it.

Have you tried putting the M80 command in file /sys/start.g file instead? That script is run automatically when you start a print from SD card, unless you are using old firmware.

Veti

This is how my printer starts in cura. if you dont include the 104 140 109 cura will generate them before the m80 command.

M80
M104 S{material_print_temperature_layer_0, 0} ;Start heating extruder
M140 S{material_bed_temperature_layer_0, 0} ;Start heating bed
M109 S{material_print_temperature_layer_0, 0} ;Wait for extruder to reach temp before proceeding

dek

@dc42 said in Problem with powering on with M80:

@dek said in Problem with powering on with M80:

I have the start script stored on the duet and referencing it in the slicer with "M98 P/macros/Scripts/start.g"

And start.g starts with:
M80 ; Power On
G4 S5 ; Dwell for 5 seconds

But the printer doesn't even power up. However, sending the M80 command in the G-code console works.

Is the M98 command right at the start of the GCode file generated by the slicer? I have a suspicion that if you look, you will find there there are some heating commands before it.

Have you tried putting the M80 command in file /sys/start.g file instead? That script is run automatically when you start a print from SD card, unless you are using old firmware.

Yes, this worked! Thank you!

As Veti said I think the problem was that Cura generated the commands in the wrong order. By a start.g in the sys directory I can still keep it simple in the slicer. This will make switching between different slicers easier.

Veti

dont forget the M81 S1 in the end code

dc42

@veti said in Problem with powering on with M80:

dont forget the M81 S1 in the end code

...or in stop.g.