FANUC Alarm DNET-020 — WARN Code file read failed
FANUC DNET-020 (“WARN Code file read failed”): The code file required to initialize the board cannot be read. First check: Cold start the system.
Updated 2026-09-17 · LogrobotLM reference
Description
The code file required to initialize the board cannot be read.
Remedy
Cold start the system. If the problem persists, INIT start and reload the DeviceNet Interface option.
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 →