FANUC Alarm DNET-104 — WARN Duplicate MAC Id error
FANUC DNET-104 (“WARN Duplicate MAC Id error”): The specified device has the same MAC Id as another device on the network. First check: Check that no other devices have the same MAC Id, particularly those connected to a different master on the same network.
Updated 2026-08-29 · LogrobotLM reference
Description
The specified device has the same MAC Id as another device on the network.
Remedy · Remède
Check that no other devices have the same MAC Id, particularly those connected to a different master on the same network. Change the MAC Id of the offending device at both the device and on the Device List, and attempt to bring it on-line. If the problem persists, cold start the controller and try again. If the problem continues, document the events that led to the error and call your FANUC Robotics technical representative.
Frequently asked · Questions fréquentes
- What does FANUC alarm DNET-104 mean?
- FANUC DNET-104 (“WARN Duplicate MAC Id error”): The specified device has the same MAC Id as another device on the network.
- How do you troubleshoot FANUC alarm DNET-104?
- Check that no other devices have the same MAC Id, particularly those connected to a different master on the same network. Change the MAC Id of the offending device at both the device and on the Device List, and attempt to bring it on-line. If the problem persists, cold start the controller and try again. If the…
Related codes / Codes liés
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 →