LogrobotLM

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-046 — WARN Weld EQ communication error

FANUC ARC-046 (“WARN Weld EQ communication error”): There was a communication error detected between ArcTool and the Weld Equipment. First check: Verify the Weld Equipment is ON.

Updated 2026-08-29 · LogrobotLM reference

Description

There was a communication error detected between ArcTool and the Weld Equipment.

Remedy · Remède

Verify the Weld Equipment is ON. Verify the DeviceNet cable is connected. Check the DeviceNet I/O screen board status and device status.

Frequently asked · Questions fréquentes

What does FANUC alarm ARC-046 mean?
FANUC ARC-046 (“WARN Weld EQ communication error”): There was a communication error detected between ArcTool and the Weld Equipment.
How do you troubleshoot FANUC alarm ARC-046?
Verify the Weld Equipment is ON. Verify the DeviceNet cable is connected. Check the DeviceNet I/O screen board status and device status.

Related codes / Codes liés

ARC-044STOPL Weld EQ needs DeviceNet defn .ARC-045WARN Weld EQ Device is OFFLINEARC-047WARN Not allowed during a weldARC-048WARN Auto AI/O setup is unsupported

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 →