I actually managed to spend a little time with The Beast today! For some very strange reason the machine is set up with an 'extra' X axis!!!!
We should have:
X1 = lathe tool in / out radially
Z1 = lathe tool in/out axially
C1 = rotary position of the main spindle
C2 = rotary position of the auxiliary spindle
V1 = axial position of the auxiliary spindle
BUT .... we also have X2. Now I hadn't realised the significance of this, but my contact at Traub pointed it out as the reason we are getting an "Y03 - Amplifier Unequipped - X" error. He had sent me various settings in the parameters for me to check, as well as the parameters for the next machine made on the production line (s/n 334 mine being 333) which is basically the same machine but sold in France so all the text is different. Not over come the extra displayed axis. I can get it removed from the screen displays ok but then the 'opposing / auxiliary amplifier' never gets initialised. Then the machine displays an 'mcp error' (addressing error in the servo amps) and very obscurely in this state prevents the RS232 port working. As soon as you try to use it it reports "IO_Stop". Re-instate the axis settings and the port works ---- argh !
When I was given the Optical Tool Setter there was a second, apparently original paper tape of the parameters tucked away in it's box. I thought that it would be a good idea to try and upload it to a pc and see if it made any difference. Loads of problems loading it - after much searching I found two places where the sprocket holes had never been punched in the factory. Yes that took lots of finding.

When I hand punched the missing holes and got it loaded it compared as the same as the other copy.
Still I see today's work as progress of a sort, and I'm increasingly confident that the errors remaining are settings issues.