LogrobotLM

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FANUC Alarm ARC-023 — STOPL Illegal arc schedule type

Manufacturer wording — STOPL Illegal arc schedule type (%s^4,%d^5)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC ARC-023 (“STOPL Illegal arc schedule type”): The arc instruction register is not an integer type. First check: Check if weld controler is functioning correctly, or powered on.

Updated 2026-09-17 · LogrobotLM reference

Description

The arc instruction register is not an integer type.

Remedy

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

Related codes

ARC-021ABORT Program aborted while weldingARC-022WARN Weld AO scaling limit usedARC-024WARN Invalid equipment rangeARC-025WARN Invalid A/D or D/A range

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 →