M291 S3 in homez.g results in error messages

mikeabuilder

I added an M291 S3 (blocking, wait for response) in my homez.g so the user can ensure there is metal under the z-probe before proceeding. I tested this new homez.g as a macro and it worked without obvious errors. When I put the file in the sys folder and use the HOME Z button on the web interface, I get two error messages - One says M28 failed, the other says M292 failed.

The issue is that the homing operation (I'm using M30) that is in the homez.g file completed (and the web interface indicates it by turning blue). So it seems the error is that the error messages were displayed. Or maybe I don;t understand something else that is going on.

Phaedrux

Can you post the results of M122 please?
And the full homing file?

fcwilt

@mikeabuilder said in M291 S3 in homez.g results in error messages:

I added an M291 S3 (blocking, wait for response) in my homez.g so the user can ensure there is metal under the z-probe before proceeding. I tested this new homez.g as a macro and it worked without obvious errors. When I put the file in the sys folder and use the HOME Z button on the web interface, I get two error messages - One says M28 failed, the other says M292 failed.

Are you issuing the M292?

I have a blocking M291 in several places (but not in any homing code) and they all work fine.

Frederick

elbgrd

I can confirm I'm getting this same behavior. The homez.g file is really simple. I'm running RepRapFirmware for Duet 3 Mini 5+ version 3.3 (2021-06-15 21:46:11) running on Duet 3 Mini5plus WiFi (standalone mode).

; homez.g

M291 P"Click OK when touch probe is ready to home Z" R"Home Z" S3 X1Y1
G90      ; absolute coordinates
G30      ; probe z

My Z probe is setup like this in config.g:

M558 K0 P5 C"^!io4.in" H5 F100 T6000     ; set Z probe 0 to digital switch type, invert and enable pullup resistor
G31 P900 X0 Y0 Z0.5                      ; set Z probe trigger value, offset and trigger height

After pressing HOME Z on the web interface, the G30 command executes and probes my metal touch probe properly and HOME Z turns blue. After it turns blue, two messages pop up with

M292
Error: Homing failed

and

G28 Z
Error: Homing failed

Phaedrux

@elbgrd said in M291 S3 in homez.g results in error messages:

K0

If you only have a single probe, delete the K0 part of your M558 and try again.

elbgrd

@phaedrux

Deleted, rebooted, and still get the error messages.

elbgrd

@phaedrux Any other ideas?

Phaedrux

Under investigation as a possible bug.

dc42

@mikeabuilder and @elbgrd , please specify whether you are running in standalone mode or SBC mode, because that might make a difference. @mikeabuilder, please also tell us what firmware version you are using.

elbgrd

@dc42 Standalone mode.

benecito

@dc42
I have the exact same problem running a 3 mini on 3.3 in SBC mode.

benecito

Any updates on this?

Phaedrux

@benecito Not as of yet.

benecito

@phaedrux But from the above I take it is not supposed to be like that? So I can expect a future update to fix this? Or do I need to look for another way to work my way trough homing?

Phaedrux

@benecito In the meantime you may need to seek a workaround yes, but hopefully not forever.

mikeabuilder

@dc42 - So sorry for starting this thread then going silent. I thought I had it set to email me when there were replies (newbie error).

I'm running a Duet2 clone board and have the RR3.3 firmware running. I'm not near the machine now so I can't look for a more detailed version number, but I downloaded mine at the end of June.

My homez.g is attached and you'll see I don't have an M292 in it, just the M291. homez.g Apologies fr the extraneous comment lines at the end. They are a leftover from the file when I inherited it.

And I'm running standalone. And I've tried this with web control and also PanelDue. I get the error messages on both.