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 LANG-004 — WARN File is not open

FANUC LANG-004 (“WARN File is not open”): (1) The wrong port is set to the port you want to use. First check: (1) Set the currect port.

Updated 2026-08-29 · LogrobotLM reference

Description

(1) The wrong port is set to the port you want to use. (2) The device may be out of order.

Remedy · Remède

(1) Set the currect port. (2) Check the device if it works fine.

Frequently asked · Questions fréquentes

What does FANUC alarm LANG-004 mean?
FANUC LANG-004 (“WARN File is not open”): (1) The wrong port is set to the port you want to use. (2) The device may be out of order.
How do you troubleshoot FANUC alarm LANG-004?
(1) Set the currect port. (2) Check the device if it works fine.

Related codes / Codes liés

LANG-005WARN Program type is differentLANG-006WARN Invalid or corrupted TP file

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 →