Filament change during Bed heating not working as expected

mloidl

Hi,

Yesterday i have found a really strange behaviour (maybe bug) on my duet.

When i try to preheat my heat bed from the PanelDue (lets say to 40°C) and during the heat-up phase i want to load a filament, the hotend is reaching it's target temperature specified in the load-gcode but does not loading the filament until the bed reached it's target temperature (40°C).

Since heating up my bed takes a long time (~10min to 65°C) it try to use this time for doing other stuff (like changing or loading the filament).

Is this the desired behavior or i'm doing something wrong?

my load.g:

G10 S225 ; Set current tool temperature to 225C
M116 ; Wait for the temperatures to be reached
M291 P"Feeding filament..." R"Loading PETG" S0 T0 ; Display new message
G1 E5 F600 ; Feed 10mm of filament at 600mm/min
G1 E45 F3000 ; Feed 45mm of filament at 3000mm/min
G1 E10 F300 ; Feed 15mm of filament at 300mm/min
G4 P1000 ; Wait one second
G1 E-5 F1800 ; Retract 5mm of filament at 1800mm/min
M400 ; Wait for moves to complete
M292 ; Hide the message
G10 S0 ; Turn off the heater again

I'm using RepRapFirmware 1.21 on a core-xy printer (Hypercube)

Thanks in advance.

Best regards,
Martin

Jackal

https://duet3d.dozuki.com/Wiki/GCode#Section_M116_Wait
Try M116 P1

mloidl

@jackal

Thank you for your response. I'll check it when i'm at home today.
I'm pretty sure this is the problem.

Best regards,
Martin

dc42

The M116 command without parameters waits for all temperatures to be reached, including the bed. Use e.g. M116 P0 to wait only for the tool 0 heater(s) to reach operating temperature.

mloidl

@dc42
Just checked to documentation and sucessfully tested it with M116 P0.

Thank you for your help.

zerspaner_gerd

Is there a command where just waiting for the tools (T0&T1) without waiting for the bed?

Phaedrux

@zerspaner_gerd "Recent versions of RepRapFirmware also allow a list of the heaters to be specified using the 'H' parameter, and if the 'C' parameter is present, this will indicate that the chamber heater should be waited for."

zerspaner_gerd

@phaedrux Thank you for your prompt reply.

So then

M116 H1:2

Will try it