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FANUC I/O Link, process I/O board, fuse and output alarms

11 codes · Full list — meaning and checks.

CodeAlarmHardwareSeverityControllers

PRIO-020STOP I/O Link comm error …, …, …, … (hex)I/O Link and process I/OErrorR-J3iB / R-30iA PRIO-021SYST Unknown I/O hardwareI/O Link and process I/OErrorR-J3iB / R-30iA PRIO-022SYST Too much I/O data on I/O linkI/O Link and process I/OErrorR-J3iB / R-30iA PRIO-083STOP Digital I/O is not recoveredI/O Link and process I/OErrorR-J3iB / R-30iA PRIO-091Op panel comm error …, … (hex)I/O Link and process I/OErrorR-30iA PRIO-093Fuse blown Rack:… Slot:…fusesErrorR-30iA PRIO-094Overload Rack:… Slot:… DO:…-…I/O Link and process I/OErrorR-30iA PRIO-095Overload …I/O Link and process I/OErrorR-30iA / R-30iB PRIO-100STOP Model B comm fault …rack:… slot:…I/O Link and process I/OErrorR-J3iB / R-30iA PRIO-104STOP Device is off-lineI/O Link and process I/OErrorR-J3iB / R-30iA SRVO-037SERVO IMSTP inputI/O Link and process I/OErrorR-J3iB / R-30iA / R-30iB