FANUC Alarm SPOT-321 — Gun Cap Change/Type failed
FANUC SPOT-321 (“Gun Cap Change/Type failed”): Gun Cap did not match the new cap model First check: 1. Change Gun Cap 2.
Updated 2026-09-17 · LogrobotLM reference
Description
Gun Cap did not match the new cap model
Remedy
1. Change Gun Cap 2. Verify that the correct cap type is on the weld gun 3. Adjust the Vision Process as necessary
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 →