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 → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm MHND-129 — WARN Could not load file %s

FANUC MHND-129 (“WARN Could not load file %s”): Error occurred while loading a . First check: Cold start the controller and retry if you know you should be able to read the .vr file into M.H.

Updated 2026-08-29 · LogrobotLM reference

Description

Error occurred while loading a . VR file

Remedy · Remède

Cold start the controller and retry if you know you should be able to read the .vr file into M.H. Shell.

Frequently asked · Questions fréquentes

What does FANUC alarm MHND-129 mean?
FANUC MHND-129 (“WARN Could not load file %s”): Error occurred while loading a . VR file
How do you troubleshoot FANUC alarm MHND-129?
Cold start the controller and retry if you know you should be able to read the .vr file into M.H. Shell.

Related codes / Codes liés

MHND-127WARN IO_STATUS error occurredMHND-128WARN Could not save .VR file %sMHND-130WARN Could not access filesMHND-133WARN Error using CLEAR built-in

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →