LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm SPOT-271 — Illegal gun index

FANUC SPOT-271 (“Illegal gun index”): The gun index is invalid. First check: Document the events that led to the error, and call your FANUC or FANUC Robotics technical service representative.

Updated 2026-09-17 · LogrobotLM reference

Description

The gun index is invalid.

Remedy

Document the events that led to the error, and call your FANUC or FANUC Robotics technical service representative.

Related codes

SPOT-246PAUSE Undefined Pressures (EP=*)-both gunsSPOT-270Illegal equipment numberSPOT-272Illegal PX indexSPOT-273Illegal pressure profile state

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 →