Andy Pugh wrote: > On 15 October 2010 14:53, Andy Pugh <a...@andypugh.fsnet.co.uk> wrote: > > There does seem to be something a bit odd going on... > http://www.linuxcnc.org/images/fbfiles/images/Screenshot_HAL_Oscilloscope_6.png > > The first thing I note is the VERY erratic trace on the Z axis feedback. While computer code bugs CAN cause erratic behavior, the first thing that comes to mind is electrical interference. Is is possible that motor signals to the Y axis are getting into the Z axis encoder signals? You could probably disconnect the Z axis encoder wires at the Pluto end and see if you still show this problem. If not, then it HAS to be electrical interference to the encoder input. These can be hard to diagnose, but at least you know it involves wires instead of lines of code.
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