Before I removed the original controller, I wanted to document what it did and how it did it. There is very little information online about such old CNC electonics.
This controller is powered by a pre-DOS generation Data General Nova 2/4.
Unfortunately, I have no troubleshooting information about the controller or the Nova. You would need additional test equipment to interface with the nova to interogate it.
I won't dump it, but will remove the Nova with it's Schaublin controller cards, and see that it gets to a museum or collector.