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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 PROG-027 — WARN Invalid task number

FANUC PROG-027 (“WARN Invalid task number”): The task number specified is invalid. First check: Check the task number.

Updated 2026-08-29 · LogrobotLM reference

Description

The task number specified is invalid.

Remedy · Remède

Check the task number.

Frequently asked · Questions fréquentes

What does FANUC alarm PROG-027 mean?
FANUC PROG-027 (“WARN Invalid task number”): The task number specified is invalid.
How do you troubleshoot FANUC alarm PROG-027?
Check the task number.

Related codes / Codes liés

PROG-025WARN Cannot execute backwardsPROG-026WARN No more motion historyPROG-029WARN Buffer size is not enoughPROG-030WARN Attribute is not found

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 →