FANUC Alarm ARC-156 — SYSTEM RoboWeld Error(0x…, …)

Manufacturer wording — SYSTEM RoboWeld Error(0x%X, %d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC ARC-156 (“SYSTEM RoboWeld Error(0x…, …)”): RoboWeld internal error. First check: Please call FANUC service.

Updated 2026-09-17 · LogrobotLM reference

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 →