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FANUC Alarm PNT1-129 — I/O Hardware not installed

FANUC PNT1-129 (“I/O Hardware not installed”): The I/O hardware that was selected is not physically installed. First check: Make sure I/O hardware that is being selected is installed correctly.

Updated 2026-09-17 · LogrobotLM reference

Description

The I/O hardware that was selected is not physically installed.

Remedy

Make sure I/O hardware that is being selected is installed correctly.

Related codes

PNT1-127Operation mode T2 SelectedPNT1-128adj out of limit at line …PNT1-130Data Error (see FR:dterrors.ls)PNT1-131Servo Disconnect

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 →