Thanks... I hooked it up like the diagram and jogged from Mach 3 and made the motor turn. Actually, I have quite a bit of experience with sureservos (driven by AD PLCs). My current project is a box-packing machine that needs to make multi-axis moves rather quickly, which is really beyond the ability of an H2ctrio card/PLC combo. I am a cnc-router hobbyist also and use EMC2 on my machine at home.This box-packing machine's PC needs to run some windows software, so after some search I decided to use Mach 3. I really like what I've seen so far!