FANUC Alarm ARC-121 — Weld not performed(Sim mode)
FANUC ARC-121 (“Weld not performed(Sim mode)”): Simulation mode is enabled. First check: None.
Updated 2026-09-17 · LogrobotLM reference
Description
Simulation mode is enabled. Actual welding is not performed.
Remedy
None.
Related codes
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 →