Programs always exceed positive Z limit at end
- Clive S
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10 Oct 2019 22:45 #147665
by Clive S
Replied by Clive S on topic Programs always exceed positive Z limit at end
Try the MAX_LIMIT limit at -6
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- JetForMe
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11 Oct 2019 00:26 #147673
by JetForMe
Replied by JetForMe on topic Programs always exceed positive Z limit at end
Can you explain your thinking here? Thanks.
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- phillc54
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11 Oct 2019 01:25 #147675
by phillc54
This is unrelated but if you get load errors with TWOPASS it usually indicates that something is not quite right in a .hal file
Replied by phillc54 on topic Programs always exceed positive Z limit at end
#TWOPASS = on Doesn't work, causes load errors
This is unrelated but if you get load errors with TWOPASS it usually indicates that something is not quite right in a .hal file
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- andypugh
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18 Oct 2019 13:03 #148193
by andypugh
I was going to suggest setting maxlimit to +0.1 just so that G53 Z0 is not _on_ the limit.
Do you have a PID in the system?
Replied by andypugh on topic Programs always exceed positive Z limit at end
Can you explain your thinking here? Thanks.
I was going to suggest setting maxlimit to +0.1 just so that G53 Z0 is not _on_ the limit.
Do you have a PID in the system?
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- JetForMe
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07 Nov 2019 01:06 #149784
by JetForMe
Replied by JetForMe on topic Programs always exceed positive Z limit at end
BTW, I finally figured out what was going on. In Fusion 360, I had defined the “Machine Configuration.” This includes a Home Position for each axis, and mine was set to 15 mm for some reason. The post processor would issue a move to the machine configuration’s home position at the end of each program, thus exceeding the limit. Not sure why loading the program wouldn't trigger a warning, though. But fixing the Machine Configuration in Fusion 360 fixed this problem.
The following user(s) said Thank You: tommylight
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07 Nov 2019 01:51 #149788
by andypugh
Replied by andypugh on topic Programs always exceed positive Z limit at end
Thanks for coming back with that. I can see that might come up again, so worth filing away.
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- kentavv
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23 Aug 2020 01:47 #179057
by kentavv
Replied by kentavv on topic Programs always exceed positive Z limit at end
It may not be appropriate to mention here, but my limit was also set to g53 z0 and about 20% of programs would have an exceed positive Z limit. Moving g53 z0 to 0.001 below the machine limit solved the problem, but bumped it to 0.010 just cause. Perhaps there is floating point error accumulation in the limit checking code? (Axis and recent build of LinuxCNC 2.8)
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