LogrobotLM

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FANUC Alarm DMER-040 — WARN Pipe not active

FANUC DMER-040 (“WARN Pipe not active”): The pipe you are attempting to access has not been activated. First check: Activate the pipe before attempting this operation.

Updated 2026-09-17 · LogrobotLM reference

Description

The pipe you are attempting to access has not been activated.

Remedy

Activate the pipe before attempting this operation.

Related codes

DMER-038WARN Cannot allocate global FDDMER-039WARN Pipe … could not be activatedDMER-041WARN DAQ ran out of memoryDMER-042WARN Invalid DAQ output device

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 →