FANUC Alarm SVGN-021 — STOP Uninitialized BU condition
FANUC SVGN-021 (“STOP Uninitialized BU condition”): Servo gun condition BU is not initialized. First check: Add a servo gun condition instruction.
Updated 2026-09-17 · LogrobotLM reference
Description
Servo gun condition BU is not initialized.
Remedy
Add a servo gun condition instruction.
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 →