FANUC Alarm SPOT-040 — WARN Stud Welder Not Ready
FANUC SPOT-040 (“WARN Stud Welder Not Ready”): The Ready Relay for the current stud welding power unit is off. First check: Reset the fault
Updated 2026-09-17 · LogrobotLM reference
Description
The Ready Relay for the current stud welding power unit is off. This is caused by the unit having a fault that has not been reset.
Remedy
Reset the fault
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 →