FANUC Alarm ARC-211 — WARN Arclink ch%d comm error %d
FANUC ARC-211 (“WARN Arclink ch%d comm error %d”): An unexpected communications error has occurred on the Arclink CAN interface. First check: Check all Arclink connections and wiring, then turn off the controller, and restart it.
Updated 2026-08-29 · LogrobotLM reference
Description
An unexpected communications error has occurred on the Arclink CAN interface.
Remedy · Remède
Check all Arclink connections and wiring, then turn off the controller, and restart it.
Frequently asked · Questions fréquentes
- What does FANUC alarm ARC-211 mean?
- FANUC ARC-211 (“WARN Arclink ch%d comm error %d”): An unexpected communications error has occurred on the Arclink CAN interface.
- How do you troubleshoot FANUC alarm ARC-211?
- Check all Arclink connections and wiring, then turn off the controller, and restart it.
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 →