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FANUC Alarm DMER-027 — Failed to write to pipe

FANUC DMER-027 (“Failed to write to pipe”): Data Monitor was not able to write data to the pipe. First check: Reallocate the pipe by changing the pipe size or device using the system variables $DMONCFG.$PIP_SIZE and $DMONCFG.$PIP_DEV_TYP.

Updated 2026-09-17 · LogrobotLM reference

Description

Data Monitor was not able to write data to the pipe.

Remedy

Reallocate the pipe by changing the pipe size or device using the system variables $DMONCFG.$PIP_SIZE and $DMONCFG.$PIP_DEV_TYP.

Related codes

DMER-025Data item type mismatchDMER-026Not enough memory for pipeDMER-031WARN DAQ task not availableDMER-032WARN DAQ system failed

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 →