2014/1/13 Peter C. Wallace <[email protected]>

>
> For a velocity mode drive you tune mainly with P and FF1:
>
> http://gnipsel.com/linuxcnc/tuning/servo.html


Thanks for the link, it seems like a valuable thing to read!
And thanks to John for creating that page!


> Note that I would first scale the PID output so the the velocity command
> (the
> output of the PID loop) is scaled in machine units per second at full scale
> (10V) This makes FF1 be close to 1 (so the PID comp just passes the
> velocity
> command directly to the drive)
>

Thanks! I think that I already have it that way.

Peter, one more Mesa-specific question - is there available firmware of
5i23 card for 7i48 with at least one encoder and one stepgen on P4
connector (particular pinout does not matter)? Currently there is 7i48 on
P2 and 7i37 on P3, but I need one more encoder module for thc (all 6
encoders on 7i48 already are used) and a stepgen for Z axis motor.

Viesturs
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