I have a 1991 Fanuc drill mate model c with o-m controller. It recently had its memory scrambled. I had a 417, 427, and 437 digital servo parameter alarms. I was able to get a copy of the control parameters but Fanuc said I needed to call the tool builder for the option parameters. I called methods and they told me they did not build this machine and they don't know who did. The only suggest they could offer me was find someone who has the same machine and see if they would email you a copy of there option parameters. If anyone has one of these machines could you please contact me. Thanks everyone for all the great information supplied in this forum! It has helped out more times than I can count!