FANUC Alarm ARC-209 — WARN Arclink ch%d bus errors
FANUC ARC-209 (“WARN Arclink ch%d bus errors”): The Arclink interface is detecting unexpected errors on the network, indicating possible electrical noise or other interference. First check: Check all Arclink connections and wiring to eliminate the source of the noise.
Updated 2026-08-29 · LogrobotLM reference
Description
The Arclink interface is detecting unexpected errors on the network, indicating possible electrical noise or other interference. If these errors continue, a network failure could occur.
Remedy · Remède
Check all Arclink connections and wiring to eliminate the source of the noise.
Frequently asked · Questions fréquentes
- What does FANUC alarm ARC-209 mean?
- FANUC ARC-209 (“WARN Arclink ch%d bus errors”): The Arclink interface is detecting unexpected errors on the network, indicating possible electrical noise or other interference. If these errors continue, a network failure could occur.
- How do you troubleshoot FANUC alarm ARC-209?
- Check all Arclink connections and wiring to eliminate the source of the noise.
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 →