FANUC

FANUC Fault Codes

FANUC robot alarms use family prefixes that point to the area of the controller raising the fault. SRVO covers servo, drive, encoder, emergency-stop, and safety-chain conditions. MOTN covers motion — the motion-planning and trajectory layer that flags unreachable positions, limit and singularity conditions, and related program-motion faults. Each family has its own index below; more families are added as their datasets are verified.