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FANUC Alarm PRIO-034 — WARN PLC interface general fault …

Manufacturer wording — WARN PLC interface general fault %d
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PRIO-034 (“WARN PLC interface general fault …”): The PLC interface board is faulted. First check: Check the LED status on the PLC interface board.

Updated 2026-09-17 · LogrobotLM reference

Description

The PLC interface board is faulted.

Remedy

Check the LED status on the PLC interface board. Refer to the FANUC Robotics manual, A User’s Guide to the FANUC Robotics SYSTEM R-J3 Controller Remote I/O interface for an Allen-Bradley PLC or A User’s Guide to the FANUC Robotics Genius Network Interface for GE FANUC.

Related codes

PRIO-023WARN No ports of this typePRIO-033WARN PLC interface init. fault …PRIO-035WARN PLC interface serial fault …PRIO-037SYST Not supported for spec. port type

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →