Resurrect.g problems

dc42

See https://duet3d.dozuki.com/Wiki/Setting_up_to_resume_a_print_after_a_power_failure.

FlyingScot

Thanks thats what I have been trying to follow but when I try to home Z using g30 its showing z position as -15.01 when z probe is triggered is this correct?

regards

Arthur

dc42

@flyingscot said in Resurrect.g problems:

Thanks thats what I have been trying to follow but when I try to home Z using g30 its showing z position as -15.01 when z probe is triggered is this correct?

regards

Arthur

That sounds odd. What exactly are you doing in resurrect-prologue.g to home Z? I presume you are positioning the head clear of the print for homing.

FlyingScot

I maybe have it wrong I though I had to home machine manually to stop head crashing into job.
so I homed x & y with buttons and moved head to a clear position and ran g30 from console.

arthur

FlyingScot

Oh thats the other problem I only have resurrect.g no resurrect-prologue.g Do I have to re-name it?

wilriker

@flyingscot No these are two separate files. resurrect.g is created for every paused print anew whereas resurrect-prologue.g will be a generic set of instructions being equal to all resurrected prints. Typically these contain at least the homing process with a partial build on the build plate and then also contain an arbitrary amount of additional commands that you might need to do whenever you have to restart a failed print.

For reference mine looks like

G28 XY             ; Home X and Y regularly
G0 Y230            ; Move Y to the front maximum
G28 Z              ; Home Z now where the head has least chance to hit something

FlyingScot

ok nearly there I think I now have a resurrect-prologue.g file as below.
the clear area for z probe is X205, Y 2. so X & X home ok then the head moves to X205, Y2 but then tries to home Z in the middle of the bed where the job is.
I read that z coordinates cant be used with g28 z so how do you stop it heading to its normal home z position?

resurrect-prologue.g
G28 XY ;Home X & Y regularly
G0 Y2 ;Move y to front of bed
G0 X205 ;Move X to clear area
G28 Z ;Home Z where head has least chance of hitting anything

wilriker

@flyingscot G28 Z will simply run /sys/homez.g. So you might have to modify this?! I don't have a Z probe just a simple microswitch endstop so to home Z my axis just lowers until the switch is hit independent of the heads position. So I cannot tell you exactly what is the best in this case.

dc42

@wilriker said in Resurrect.g problems:

@flyingscot G28 Z will simply run /sys/homez.g. So you might have to modify this?!

Just copy the contents of homez.g into the resurrect-prologue file in place of the G28 Z command, removing or adjusting any commands that position the head in XY before executing the G30 or G1 S1 Z command that does the actual homing.

wilriker

@dc42 said in Resurrect.g problems:

Just copy the contents of homez.g into the resurrect-prologue file in place of the G28 Z command, removing or adjust any commands that position the head in XY before executing the G30 or G1 S1 Z command that does the actual homing.

That makes a lot more sense than my idea.
Too hot -> brain-melt -> going home now (or into the fridge?).

FlyingScot

Success, thanks for all your help Guys