FANUC Alarm ARC-205 — Arclink ch… h/s event lost
Manufacturer wording — Arclink ch%d h/s event lost
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC ARC-205 (“Arclink ch… 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 2026-09-17 · LogrobotLM reference
Description
The high speed event message expected during welding failed to arrive in time.
Remedy
The Arclink network is automatically reset. If this error persists, it indicates a problem with the communications network or welding equipment.
Related codes
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. How this reference is built →