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FANUC Alarm DNET-114 — WARN Bus fault error detected

FANUC DNET-114 (“WARN Bus fault error detected”): The board has detected a fault on the DeviceNet network, and cannot communicate with devices. First check: Check that the baud rate of the board matches the baud rate of all devices on the network.

Updated 2026-09-17 · LogrobotLM reference

Description

The board has detected a fault on the DeviceNet network, and cannot communicate with devices.

Remedy

Check that the baud rate of the board matches the baud rate of all devices on the network. Also, check that power is being supplied to the network. If the problem persists, cycle power to the controller, and then to the network if the problem continues.

Related codes

DNET-112WARN Board not ready; pls. waitDNET-113WARN OFFSET cmd err ret ' caused by boardDNET-115WARN Invalid I/O connection attemptDNET-119ERR_STOP_C Dup. MAC Ack Fault

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