FANUC Alarm ARC-150 — STOP Invalid op. in weld(0x…)(E:…)

Manufacturer wording — STOP Invalid op. in weld(0x%X)(E:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC ARC-150 (“STOP Invalid op. in weld(0x…)(E:…)”): Detect invalid signal operation in welding. First check: Reset and try again after Arc OFF.

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 →