My Struggles Talking to an Old Piece of Junk (Fanuc 0M)

A machinist documents their months-long struggle to get an old Fanuc 0M CNC mill operational, including rewiring the workshop's electrical system and troubleshooting numerous servo and spindle alarms. After finally achieving reliable machine operation through trial and error, they spent weeks attempting to establish serial communication to load CAM programs, ultimately succeeding in receiving data only after testing multiple adapter combinations. They continue working on resolving remaining issues with the serial communication protocol to fully enable program transfer to the machine.