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 → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm DNET-109 — WARN Bus not offline error

FANUC DNET-109 (“WARN Bus not offline error”): The board could not perform an operation be the bus is not off-line. First check: Take the board off-line and re-attempt the operation.

Updated 2026-08-29 · LogrobotLM reference

Description

The board could not perform an operation be the bus is not off-line.

Remedy · Remède

Take the board off-line and re-attempt the operation.

Frequently asked · Questions fréquentes

What does FANUC alarm DNET-109 mean?
FANUC DNET-109 (“WARN Bus not offline error”): The board could not perform an operation be the bus is not off-line.
How do you troubleshoot FANUC alarm DNET-109?
Take the board off-line and re-attempt the operation.

Related codes / Codes liés

DNET-107WARN Bus offline errorDNET-108WARN Scanner active errorDNET-110WARN Error: board scanningDNET-111WARN Error: board not scanning

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →