Hey, folks, I'm new to CNC machines, but hve been around electronics for a long time. I have acquired an Eagle 400 mill with Anilam 1400 CNC. I have prints for the wiring, but nothing at the board level. This is the later version 1400, with saddle bag control boxes. The machine is wired for 5 axes, but has only three installed. The Anilam takes a rotary encoder to control position. On the Eagle these are attached to the ballscrew drives, rather than to the table itself.

I want to add a fourth rotary axis. Anyone have experience with this? There is a spot for another Westamp servo card, and the wiring harness is in place, but no card. Anilam doesn't support this machine directly anymore, and the local rep doesn't really have the time to help, though he is a nice fellow.