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FANUC Alarm ARC-034 — STOPL Task does not control welding

Manufacturer wording — STOPL Task does not control welding (%s^4,%d^5)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC ARC-034 (“STOPL Task does not control welding”): A task which does not have weld control attempted to execute an Arc Start or an Arc End instruction. First check: Allow the task which has weld control to end or abort before attempting to weld with another task.

Updated 2026-09-17 · LogrobotLM reference

Description

A task which does not have weld control attempted to execute an Arc Start or an Arc End instruction. Only one task is permitted to have weld control.

Remedy

Allow the task which has weld control to end or abort before attempting to weld with another task.

Related codes

ARC-032STOPL Weld stopped by single stepARC-033STOPL Override must be 100% to weldARC-035STOPL Equipment number isn't setARC-036STOPL Such equipment mask isn't supported

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 →