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FANUC Alarm DNET-023 — WARN Board initialization error

FANUC DNET-023 (“WARN Board initialization error”): An error has occurred in the board initialization process. First check: Cycle power to the controller.

Updated 2026-09-17 · LogrobotLM reference

Description

An error has occurred in the board initialization process.

Remedy

Cycle power to the controller. If the problem persists, turn the controller off and check the motherboard connection to 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-021WARN Code file checksum errorDNET-022WARN Board initialization timeoutDNET-025WARN No device assigned for Bd/MACDNET-026WARN No match on dev type look-up

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 →