Yes, I agree. Bouncing around like a frenetic ping pong ball isn't effective. It was useful before just to see if I can identify any single fault, but concentrating on a single thing is probably best. So, I'll go back to the 80V drive I started with because at least that appears to have the ability to read the encoder and when I attach it to a motor, it actually moves the motor (what a novel concept). So, henceforth, I'll limit my discussion to that until further notice.

You are correct, I am not using Mach3. This will be a LinuxCNC build although at this point it is sort of academic because I am hooking a windows PC directly up to the VSD drive through the USB cable. So, no Mesa board, no Linux machine, nothing.

I will try 50/50 and report on that.

Thank you for helping!
Alan