Steve Bailey
Lifetime Supporting Member + Moderator
You will need to connect to the PLC with a computer running the programming software and clear the PLC's fault tables. Then you will be able to restart the PLC.I have a fanuc GE 90 30 PLC it does not go to RUN mode
No, that is a last resort after all other attempts have failed. Shorting that capacitor erases RAM memory and returns the CPU module to its out-of-the-box state.should i short the capacitor behind the main board?