ERROR: pierce height would exceed Z axis maximum limit

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28 Jan 2022 01:05 - 28 Jan 2022 01:05 #233329 by rodw
This is really strange and I have no idea how to resolve it.
As soon as Plasmac probes, it goes straight to max Z height and then generates this error:
pierce height would exceed Z axis maximum limit condition found while moving to probe height during ohmic probing
Tried the Plasmac metric wrench and behaviour is unchanged.

I can't see any reason why in the settings. Bottom of travel is about 12mm below the material height so the probe and safe heights are valid. I am at a bit of a loss with this.

  

I have not changed anything and have done an upgrade in the last few days to no avail. Currently on V 1.221.156. It just happened one day when I started it. But I am unable to cut anything.
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Last edit: 28 Jan 2022 01:05 by rodw.

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28 Jan 2022 01:11 - 28 Jan 2022 01:13 #233330 by phillc54
There was a window in time where an update would remove the following line from the machine hal file, if you add it back to the hal file it should be ok:
net plasmac:axis-position joint.3.pos-fb => plasmac.axis-z-position

The joint number obviously needs to be the joint mapped to the Z axis.

Edit: Oops, I think I misread the warning...
Last edit: 28 Jan 2022 01:13 by phillc54.

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28 Jan 2022 01:11 - 28 Jan 2022 01:12 #233331 by snowgoer540
Simply put it means that the probe is high enough that the torch won’t be able to move to pierce height without violating the soft limit.

Since it says it was found during ohmic testing, have you tried it without ohmic checked?  When I had THCAD ohmic, this was something I encountered.  It could be a false trip, perhaps there’s some dross on the tip giving a path through the electrode, etc.  

EDIT:  forgot about the thing Phill said, I’d check his suggestion first :)

 
Last edit: 28 Jan 2022 01:12 by snowgoer540.

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28 Jan 2022 02:02 #233332 by rodw
Actually snowgoer got the prize!
I knew I bought new consumables for a reason!
The probe was shorted inside the tip so it was rushing away from the material to clear the probe signal.
Replacing the consumables solved the issue.

Thanks guys. Helpful to have other sets of eyes in the background!

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28 Jan 2022 02:31 #233336 by snowgoer540
Good deal, glad it was a simple fix

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