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FANUC Alarm ARC-045 — WARN Weld EQ Device is OFFLINE

FANUC ARC-045 (“WARN Weld EQ Device is OFFLINE”): ArcTool attempted to communicate with the Welding Equipment using the DeviceNet network, but could not be the link was not properly established. First check: Verify the Weld Equipment is ON.

Updated 2026-09-17 · LogrobotLM reference

Description

ArcTool attempted to communicate with the Welding Equipment using the DeviceNet network, but could not be the link was not properly established.

Remedy

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

ARC-043STOPL Weld EQ needs DeviceNet boardARC-044STOPL Weld EQ needs DeviceNet defn.ARC-046WARN Weld EQ communication errorARC-047WARN Not allowed during a weld

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 →