Quote Originally Posted by vre View Post
I want to control servo speed-torque & vfd from mach3/linuxcnc with analog voltage -10v to 10v.
My servo accepts digital step/dir - cw/ccw - quadrature for position control and analog -10v to 10v for speed/torque control.
Vre can you post the Make and model of your Servo drives because Like Irving says it's unclear what your saying and I think you maybe misunderstanding the requirements of your Servo drives.?

Also if using a VFD what Make and model of that also.