Backlash compensation issue.

[Lobos8403]

Hello i just switched over from Mach3 and i am setting up the UCCNC software. I'm finding that when i step jog at .001 increments with backlash compensation on is giving me some unusual results. When i step more then about 5 increments in the same direction i can see the motor move in the opposite direction almost as if its applying the backlash compensation in the wrong direction. The backlash compensation should only work when changing directions. I found this as i was trying to dial in the backlash compensation numbers for the mill. Has anyone seen this before? When i turn backlash comp off the step jog goes back to normal incremental.

My setup is on a windows 7 64bit machine, with UC400ETH.

Thank you!

David.

[cncdrive]

Try to higher the comp.acceleration parameter of the axis. If it is high enough, e.g. like 200% then this issue should not happen.