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FANUC Alarm PRIO-359 — EtherNet/IP I/O Timeout Error

FANUC PRIO-359 (“EtherNet/IP I/O Timeout Error”): The robot EtherNet/IP Scanner timed-out while waiting for an I/O update message from the remote adapter. First check: Press RESET to restart the scanner connection.

Updated 2026-09-17 · LogrobotLM reference

Description

The robot EtherNet/IP Scanner timed-out while waiting for an I/O update message from the remote adapter.

Remedy

Press RESET to restart the scanner connection. Check the remote adapter to verify it is functioning properly.

Related codes

PRIO-357EtherNet/IP Reg Sess FailedPRIO-358EtherNet/IP FwdOpen Fail (0x…)PRIO-360EtherNet/IP Adp Not in Run ModePRIO-369EtherNet/IP System Error

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 →