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FANUC Alarm MENT-004 — Communication CPU RAM abnormal

FANUC MENT-004 (“Communication CPU RAM abnormal”): Communication CPU RAM is abnormal. First check: Check the ME-NET board.

Updated 2026-09-17 · LogrobotLM reference

Description

Communication CPU RAM is abnormal.

Remedy

Check the ME-NET board.

Related codes

MENT-002ME-NET PCB abnormalMENT-003Communication CPU ROM abnormalMENT-005Communication CPU LSI abnormalMENT-006More than one taken occured

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 →