Because of a problem I'm having in another thread, I want to build my own THC basically. Or more simply put, I want to control a servo motor separately.

I want to disconnect the Z axis servo motor from my CNC table setup, and somehow control it completely separately.

That's basically what I'm doing now since I don't have ATHC. I just sit on a chair with a welding helmet on and watch the spark cutting, bringing the head up and down by eye. I'm completely used to it by now and I don't use it enough to upgrade to a new system.

So how can I manually control this servo motor to go up and down? It has the power cable coming out of it, which is easy to get to, and it has a RJ45 connector going into it at the encoder. Here's a pic:


What do I need to do to make that happen?