That table i gave you is for a Galil 1900 board to a Ahha RC500. The PWMX is a label on the 1900 board. Its function is the steps for X. In this case, find the step output for X from M3 and wire it to pin 20 on the RC500 box.
My best guess on your trouble: there are two pins on the RC500 that must be held Low or Hi or the drive won't go. I'm sorry I don't remember which ones and whether you hold Low or HI. In my notes, Green is Low, Red is Hi (colors you get on a logic probe) I think you need to look at drive enable and Estop.
Karl |