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Not returning to zero

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Greolt:
Disabling legacy mode in bios has made comunication more stable.

However I have a funny problem.

Set all DROs to zero, run the roadrunner, DROs not ending on zero.  Gcode last move is go to zero but DROs not returning to zero.

Watching the Z axis DRO during code execution. Z spends most of the time at -0.1 and goes up for rapids returning to -0.1

Each time (or most) it returns 0.0025 different than the last. So they add up to a cumulative error by the end.

See pic for screen capture at the end of roadrunner execution.

rcrabb:
I only ran the roadrunner a few time since I got the comuncations fixed. I noticed the same thing with the Z positioning and returning to zero.

Greolt:
Glad it is not just me.

It always feels better if someone else is having the same problem.  ;D

kookaburra:
Beta Team,

Art is aware of this issue and at the moment is talking with the Pod developer about it. The Pod and Mach 3 is accurate to +/- 1 step (provided you have the latest version of Mach 3 and the Pod firmware update). I will re-visit this with Art to get an update on his thoughts regarding this matter.

Dave

Brian Barker:
Set your servo time to .00087 and you should be good :)

I have been running tests and it is working well for position. you need to have the latest software on everything.

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