Hi all
As i mentioned in my former email,i own a PNC 4S   mill controller  
CPU  8085/80c31 ,
 V 5.088G , 26-03-93  10MHZ
I reprogramed all parameters  but i cant energise power drives  relay ( if i do it manualy drives work)
All  diagnostics  RAM-ROM  etc. reports OK
So i think without electric diagrams i shall not find the problem.
Please ask for help.
THANK YOU