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FANUC Alarm DNET-001 — ERR_STOP_C No system device file

FANUC DNET-001 (“ERR_STOP_C No system device file”): The system device definition file is missing from the system. First check: INIT start and reload the DeviceNet Interface option.

Updated 2026-09-17 · LogrobotLM reference

Description

The system device definition file is missing from the system.

Remedy

INIT start and reload the DeviceNet Interface option. If the error still exists, document the events that led to the error and call your FANUC Robotics technical representative.

Related codes

DNET-002ERR_STOP_C No application device fileDNET-003ERR_STOP_C Too many DNet motherboards

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 →