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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 FLPY-009 — WARN Communications error

FANUC FLPY-009 (“WARN Communications error”): The protocol format was invalid. First check: Retry the operation.

Updated 2026-08-29 · LogrobotLM reference

Description

The protocol format was invalid.

Remedy · Remède

Retry the operation.

Frequently asked · Questions fréquentes

What does FANUC alarm FLPY-009 mean?
FANUC FLPY-009 (“WARN Communications error”): The protocol format was invalid.
How do you troubleshoot FANUC alarm FLPY-009?
Retry the operation.

Related codes / Codes liés

FLPY-006WARN End of file reachedFLPY-008WARN Only one file may be openedFLPY-015WARN Write protection violationFLPY-100WARN Directory read error

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 →