7i33 spindle

Thanks Andy,
I added a couple of "or2" and now i have gpio 19 and pwmgen-enable on
I will have to adjust something because now in the orient half-way forward and half turn back faster and faster without stopping.
Tomorrow I feel better ..

Probably a lot too much I gain, or possibly too much P gain.

Thanks Andy,
I did not realize that the motor and inverter I'm testing with does not work at very low speeds, so it accumulates error then changes to the minimum voltage to run.
the brushless AC fanuc where it goes will surely behave well.
I can not understand why it does not use the encoder index ... it needs proximity for homing spindle ?

You probably want to use the index once at start-up to zero the encoder to a fixed position, but you won't need to do it again. (But, if there is a risk that the encoder loses counts at high speed, then you could zero to index again)

To make a VFD work with a PID you probably need a gain curve to modify the output of the PID. I would use a lincurve component set up something like Assuming that the VFD starts to move at 1V commanded.

Thanks Andy,
I used "lincurve" and set the pid, now working much better.
The signal "is oriented" is missing and does not stop the cycle but I'm trying.

motion.spindle-is-oriented should be there:
linuxcnc.org/docs/2.7/html/man/man9/motion.9.html