Probe Basic backplot error when loading file

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24 Oct 2025 02:57 #337018 by Lcvette
Replied by Lcvette on topic Probe Basic backplot error when loading file
ok, i used your file, added your tools to the tool library, ran PB, homed, loaded your file, moved to a spot and set G54 using G10 L2 P1 X Y Z, then did the same for G55 and G56 and no error here,, im not near my machine with the actual probe to set things that way so can you test by the method above and see if you get the same backplot error that way? if not i will have to test next im at the shop near the machine.

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24 Oct 2025 10:31 - 24 Oct 2025 13:29 #337037 by Unlogic
Replied by Unlogic on topic Probe Basic backplot error when loading file
Thanks for looking into this issue.

I opened the attached file I ran the following commands without encountering any issues:

G10 L2 P1 X0 Y0 Z0
G10 L2 P2 X0 Y0 Z0
G10 L2 P3 X0 Y0 Z0

However as soon as I set the value of G56 using the probing function highlighted below the error appears when the probing has finished.

 

This seems to be related some type of state that gets set during the probing of G56. Because if I probe G56 with no file open and then open the attached file it triggers the error immediately without any further input required.

 
Attachments:
Last edit: 24 Oct 2025 13:29 by Unlogic. Reason: Fixed typo

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24 Oct 2025 13:05 #337048 by Lcvette
Replied by Lcvette on topic Probe Basic backplot error when loading file
do you have feed rate override active? i will be on the shop in an hour or so and will try things out with a probe and see if i can replicate.

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24 Oct 2025 13:18 #337049 by Unlogic
Replied by Unlogic on topic Probe Basic backplot error when loading file
I had no overrides active, everything was at 100%.

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24 Oct 2025 13:38 - 24 Oct 2025 13:40 #337054 by Lcvette
Replied by Lcvette on topic Probe Basic backplot error when loading file
disregard was able to break on dev here!
Last edit: 24 Oct 2025 13:40 by Lcvette.

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24 Oct 2025 13:51 #337056 by Lcvette
Replied by Lcvette on topic Probe Basic backplot error when loading file
are you on the qtpyvcp chat? if not could you join so we could troubleshoot?

matrix.to/#/#qtpyvcp:matrix.org

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24 Oct 2025 14:04 #337059 by Unlogic
Replied by Unlogic on topic Probe Basic backplot error when loading file
I'm in the chat now with the same username as here.

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24 Oct 2025 17:06 #337077 by Unlogic
Replied by Unlogic on topic Probe Basic backplot error when loading file
Lcvette and the Probe Basic dev team quickly produced a patch for me to test.

They are clearly making progress on this issue because with the patch the crash is gone. However I noticed a slight side effect with the plot not drawing all the moves correctly.

Here are the steps I did to produce the following screenshots.

I started by setting all the G54, G55 and G56 offsets to all zeros:

G10 L2 P1 X0 Y0 Z0
G10 L2 P2 X0 Y0 Z0
G10 L2 P3 X0 Y0 Z0

I then loaded the file attached to my first post and probed all the three parts going from right to left (starting with G56, then G55 and finally G54). The probing worked and there was no crash but the plot show some strange moves.

 

Opening the same file again without doing anything else produced the following plot instead.

 

The plot above looks better but I think it's not fully correct as it should start with the left most part not center one.

Here are the offset values for G54, G55 and G56 used for the two plots above.

 
Attachments:
The following user(s) said Thank You: tommylight

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24 Oct 2025 18:54 #337081 by Unlogic
Replied by Unlogic on topic Probe Basic backplot error when loading file
For comparison here is how the plot looks without the patch applied.

 
Attachments:

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24 Oct 2025 21:14 #337092 by Unlogic
Replied by Unlogic on topic Probe Basic backplot error when loading file
After an impressively quick iterative process Lcvette and TurBoss managed to fix all the errors I encountered in this thread.

I'm sure they'll announce an updated development version shortly including these fixes.

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