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FANUC Alarm DNET-056 — WARN Network power lost

FANUC DNET-056 (“WARN Network power lost”): Power has been removed from the DeviceNet network. First check: Check the cable connecting the daughter board to the DeviceNet network.

Updated 2026-09-17 · LogrobotLM reference

Description

Power has been removed from the DeviceNet network.

Remedy

Check the cable connecting the daughter board to the DeviceNet network. Also, check the connection to the power source. Cycle power to the controller.

Related codes

DNET-054WARN All space in shared RAM usedDNET-055ERR_STOP_C Board or network error: Bd …DNET-057WARN Network communications errorDNET-058WARN Message queue overrun

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 →