LogrobotLM

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FANUC Alarm SYST-117 — WARN No PNS echo output defined

FANUC SYST-117 (“WARN No PNS echo output defined”): The PNS echo outputs, which are required with the current program selection options, have not been defined. First check: Set up the PNS echo outputs in the Cell Output I/O and Group I/O menus and restart the robot.

Updated 2026-09-17 · LogrobotLM reference

Description

The PNS echo outputs, which are required with the current program selection options, have not been defined.

Remedy

Set up the PNS echo outputs in the Cell Output I/O and Group I/O menus and restart the robot.

Related codes

SYST-115WARN No PNS select input definedSYST-116WARN No RSR echo output definedSYST-118WARN No PNS strobe input definedSYST-119WARN No echo strobe output defined

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 →