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FANUC Alarm CALM-038 — Invalid $MNUTOOLNUM.

FANUC CALM-038 (“Invalid $MNUTOOLNUM.”): $MNUTOOLNUM is invalid. First check: Calmate reset $MNUTOOLNUM=1.

Updated 2026-09-17 · LogrobotLM reference

Description

$MNUTOOLNUM is invalid.

Remedy

Calmate reset $MNUTOOLNUM=1.

Related codes

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 →