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FANUC Alarm DNET-062 — WARN Bus off due to comm errors

FANUC DNET-062 (“WARN Bus off due to comm errors”): The board is not communicating to the network because there are too many errors. First check: Check that the baud rate of the board and of the devices is the same.

Updated 2026-09-17 · LogrobotLM reference

Description

The board is not communicating to the network because there are too many errors.

Remedy

Check that the baud rate of the board and of the devices is the same. Make sure that power is connected to the DeviceNet network. Press RESET on the teach pendant. If the problem persists, begin removing devices from the network; after each device is removed, press RESET. When the board is brought on-line, check the device configuration and the parameters of the device definition.

Related codes

DNET-060WARN Xmit timeout: Network floodedDNET-061WARN No other nodes on networkDNET-063ERR_STOP_C Device error: Bd … MAC …DNET-064WARN Connection error

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 →