Motor encoder scaling

PMCD wrote:
The servo motors still drift when the drives are enabled via a manual push button on the console and of course they stop when I hit F2 on Linuxcnc. Will tuning the motors properly stop this or should I be looking elsewhere?

No it will not, the wiring has to be made so that only LinuxCNC can enable the drives, but since you have a push button to power the drives i have to assume you have the drive enable pins set to always enabled and that must change.
Unfortunately i can not help much without knowing how the wiring is set up.

I hope I can explain this properly.

This is a retro fit to a Weeke Homag BP80.

The drive enable (control on) is part of the Estop chain.

I have Output 0 Estop out. Linuxcnc Estop to close the loop.

Input 0 Estop in. Control on Console button drive enable. and configured in hal and classic ladder. (I take no credit)

I copied of Andrew at CARBIDE CUTTER NZ youtube channel


I don't expect you to watch it but about halfway through on is what I have done and it works well and is safe.

Just one thought,

Should I have the 7i77 neutral common connected to the machine Neutral common. The ground is already connected,

Peter