Interestingly I found that if I manually perform the X home, Y home, and the G30 H0.5 command, I was able to get a successful restart. I changed my resurrect-prologue .g to separate the X home, Y home, and Z home to copy what I did exactly and so far this seems to be working.
resurrect-prologue .g:
M116
G28 X
G28 Y
G30 H0.5
M83
G1 E5 F600
@mrwizzard I've wondered about that. Reading through the guides and whatnot it looks like you can lose a handful of step if you don't home Z, but based on my testing that would probably be accurate enough to not affect much on printing. I don't know if can rely on the M911 Z movement command to be accurate enough to then remove this the movement when restarting. Do you know what the resurrect-prologue.g would look like for this type of resuming without homing Z?
It's an inductive probe.
I just noticed I might have my y offset reversed on the G31 line in my config.g . If the probe in located in front of the nozzle is this a positive y value in G31?
Hello,
I'm working to get the resume after power failure feature running, and I keep running into the same issue that I can't seem find another topic on.
I'm working with a Core XY printer newly converted to a Duet Wifi, that seems to be running great with firmware 2.01. I'm working to implement some of the cool features on the Duet like the power fail protection.
With that, my current resurrect-prologue.g is the following:
M116
G28 XY
G30 H0.45
M83
G1 E5 F600
I normally home in the bed center so I added the G30 to home Z. I noticed there is a decent probe trigger height difference at (0,0) so currently I have a compensation of .45mm on the Z.
When simulating a power failure, the resurrect.g file is created as expected. When restarting and issuing the M916 command everything goes well until the homing routine. The problem seems to be that when the G30 command is executed I keep receiving the same message: "Error: Z probe was not triggered during probing move. Error: Homing failed." X and Y home correctly but the bed moves up to attempt to home z, but after a cm or so of travel the error is returned with no Z homing. The print then resumes as the right X,Y location but the Z is always incorrect because the homing never occurred.
I've been able to get one good resume when I did the power fail pretty early on, within the first 10mm of the print. It seems like there's a limit to how far the bed will travel when attempting to home z when running the resurrect-prologue.g file. When the print is too far along I cam't seem to get z to home properly.
Thanks for any help with this.
Huw