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FANUC Alarm ARC-016 — STOPL Weld by Shift FWD is disabled

FANUC ARC-016 (“STOPL Weld by Shift FWD is disabled”): A program executing from the teach pendant attempted an Arc Start with welding from the teach pendant disabled. First check: Check if weld controler is functioning correctly, or powered on.

Updated 2026-09-17 · LogrobotLM reference

Description

A program executing from the teach pendant attempted an Arc Start with welding from the teach pendant disabled.

Remedy

Check if weld controler is functioning correctly, or powered on.

Related codes

ARC-014WARN Teach pendant is disabledARC-015WARN Press shift with this keyARC-017WARN Arc Start was disabledARC-018STOPL Lost arc detect

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 →