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 MHND-134 — WARN File is in use by robot. Cannot transfer

FANUC MHND-134 (“WARN File is in use by robot. Cannot transfer”): The file you requested to transfer is being used by the robot. First check: First stop the robot.

Updated 2026-09-17 · LogrobotLM reference

Description

The file you requested to transfer is being used by the robot. It is being used in production or is being edited using SETUP

Remedy

First stop the robot. Then ABORT ALL. Then attempt to transfer

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 →