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-057 — WARN Network communications error

FANUC DNET-057 (“WARN Network communications error”): A network communications error has occurred on the network connected to the specified board. First check: Check that the board's baud rate corresponds to that of the devices.

Updated 2026-09-17 · LogrobotLM reference

Description

A network communications error has occurred on the network connected to the specified board.

Remedy

Check that the board's baud rate corresponds to that of the devices. Check cable connections to both the board and devices. Check that the proper device definitions are selected for the devices on the network and that parameters are correct for user-defined devices. Turn off both the controller and the DeviceNet network power, then cold start the controller.

Related codes

DNET-055ERR_STOP_C Board or network error: Bd …DNET-056WARN Network power lostDNET-058WARN Message queue overrunDNET-059WARN Message lost

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 →