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 ARC-205Arclink ch%d h/s event lost

FANUC ARC-205 (“Arclink ch%d h/s event lost”): The high speed event message expected during welding failed to arrive in time. First check: The Arclink network is automatically reset.

Updated 2026-08-29 · LogrobotLM reference

Description

The high speed event message expected during welding failed to arrive in time.

Remedy · Remède

The Arclink network is automatically reset. If this error persists, it indicates a problem with the communications network or welding equipment.

Frequently asked · Questions fréquentes

What does FANUC alarm ARC-205 mean?
FANUC ARC-205 (“Arclink ch%d h/s event lost”): The high speed event message expected during welding failed to arrive in time.
How do you troubleshoot FANUC alarm ARC-205?
The Arclink network is automatically reset. If this error persists, it indicates a problem with the communications network or welding equipment.

Related codes / Codes liés

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 →