Moving Z to zero causes limit error, but limit is Z=0
24 Oct 2020 03:39 #187063
by JetForMe
Moving Z to zero causes limit error, but limit is Z=0 was created by JetForMe
I have an ongoing issue where generated gcode does
G53 G0 Z0.
And LinuxCNC complains. Thing is, it's set up such that that's the upper Z limit (MAX_LIMIT = 0.0). Shouldn't it be willing to go TO the limit (obviously not past it)?
G53 G0 Z0.
And LinuxCNC complains. Thing is, it's set up such that that's the upper Z limit (MAX_LIMIT = 0.0). Shouldn't it be willing to go TO the limit (obviously not past it)?
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- tommylight
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24 Oct 2020 08:04 #187076
by tommylight
Replied by tommylight on topic Moving Z to zero causes limit error, but limit is Z=0
What's the complaint ?
I use that daily and have no issues with it.
I use that daily and have no issues with it.
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24 Oct 2020 11:10 #187093
by MaHa
Replied by MaHa on topic Moving Z to zero causes limit error, but limit is Z=0
If you set MAX_LIMIT = 0.0, retracting to G53 G0 Z0 it will hit the limit. MAX_LIMIT = 0.001 or greater will work
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26 Oct 2020 19:26 #187334
by JetForMe
Replied by JetForMe on topic Moving Z to zero causes limit error, but limit is Z=0
That it exceeds the travel limits.
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26 Oct 2020 19:27 #187335
by JetForMe
That seems imprecise, and a bug, no?
Replied by JetForMe on topic Moving Z to zero causes limit error, but limit is Z=0
If you set MAX_LIMIT = 0.0, retracting to G53 G0 Z0 it will hit the limit. MAX_LIMIT = 0.001 or greater will work
That seems imprecise, and a bug, no?
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26 Oct 2020 19:46 #187337
by PCW
Replied by PCW on topic Moving Z to zero causes limit error, but limit is Z=0
Not really. LinuxCNC uses actual position when limit checking and there will always
be some position error relative to commanded position so a small amount of headroom is needed.
be some position error relative to commanded position so a small amount of headroom is needed.
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26 Oct 2020 23:13 #187352
by phillc54
Replied by phillc54 on topic Moving Z to zero causes limit error, but limit is Z=0
To me that seems very precise and correct.
If you set MAX_LIMIT = 0.0, retracting to G53 G0 Z0 it will hit the limit. MAX_LIMIT = 0.001 or greater will work
That seems imprecise, and a bug, no?
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27 Oct 2020 08:07 #187392
by rodw
X 2
The work envelope needs to be inside the limits.
Replied by rodw on topic Moving Z to zero causes limit error, but limit is Z=0
To me that seems very precise and correct.
If you set MAX_LIMIT = 0.0, retracting to G53 G0 Z0 it will hit the limit. MAX_LIMIT = 0.001 or greater will work
That seems imprecise, and a bug, no?
X 2
The work envelope needs to be inside the limits.
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