FANUC Alarm THSR-031 — WARN Illegal register number
FANUC THSR-031 (“WARN Illegal register number”): The input register number is illegal, and it is reset by the software to the maximum available number. First check: Check the input data.
Updated 2026-09-17 · LogrobotLM reference
Description
The input register number is illegal, and it is reset by the software to the maximum available number.
Remedy
Check the input data.
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 →