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 DNET-022 — WARN Board initialization timeout

FANUC DNET-022 (“WARN Board initialization timeout”): The board initialization routine has timed out. First check: Turn the controller off.

Updated 2026-09-17 · LogrobotLM reference

Description

The board initialization routine has timed out.

Remedy

Turn the controller off. Make sure the motherboard is correctly seated on the back plane. Cold start the controller. If the problem persists, document the events that led to the error and call your FANUC Robotics technical representative.

Related codes

DNET-020WARN Code file read failedDNET-021WARN Code file checksum errorDNET-023WARN Board initialization errorDNET-025WARN No device assigned for Bd/MAC

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 →