Hi Hood,
I've been able to move all the motors fine so far, everything functions the way it should w/PC-m'step controller.
I think the opto card is fine - I pulsed signals on each output from the PC (using another program) and each indicator lit.
Then when I hooked PC-Opto-M'step controller, no joy. I disabled everything except the motor step and dir lines to troubleshoot.
I'll check the steps per unit in work later.Thanks anyhow for clarifying the freq Mach puts out (kicking myself here); I will try running the motors at low speed
Aidan