LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm TPIF-041 — WARN MNUTOOLNUM number is invalid

FANUC TPIF-041 (“WARN MNUTOOLNUM number is invalid”): Specified MNUTOOLNUM number is invalid First check: Check system variable $MNUTOOLNUM

Updated 2026-09-17 · LogrobotLM reference

Description

Specified MNUTOOLNUM number is invalid

Remedy

Check system variable $MNUTOOLNUM

Related codes

TPIF-038WARN Invalid char in program nameTPIF-040WARN Label already existsTPIF-042WARN MNUFRAMENUM number is invalidTPIF-043WARN External change is valid

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 →