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FANUC Alarm ARC-043 — STOPL Weld EQ needs DeviceNet board

FANUC ARC-043 (“STOPL Weld EQ needs DeviceNet board”): The weld equipment has been configured to use DeviceNet by setting the fields $VENDOR_ID, $DEV_TYPE, and $PROD_CODE in the system variable $AWEPRR to non-zero values. First check: Add DeviceNet hardware or choose a weld equipment model which does not require DeviceNet.

Updated 2026-09-17 · LogrobotLM reference

Description

The weld equipment has been configured to use DeviceNet by setting the fields $VENDOR_ID, $DEV_TYPE, and $PROD_CODE in the system variable $AWEPRR to non-zero values. However, DeviceNet hardware was not detected.

Remedy

Add DeviceNet hardware or choose a weld equipment model which does not require DeviceNet. If the weld equipment model is correct and does not require DeviceNet then set the $AWEPRR fields mentioned above to zero and cycle power.

Related codes

ARC-041STOPL Weld EQ needs DeviceNet optionARC-042STOPL Weld EQ needs Expl Msg optionARC-044STOPL Weld EQ needs DeviceNet defn.ARC-045WARN Weld EQ Device is OFFLINE

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 →