A03B-0823-C013
sold as shown, price per one  piece
looks mint and unused, ( probably ) 

In modern CNC architectures, the main I/O board processes a set baseline of machine tool commands. When a complex machine requires additional inputs or outputs (such as extra tool changer sensors, safety interlocks, status indicators, or auxiliary fluid valves), the A03B-0823-C013 serves as a direct system expander.

It interfaces directly with the central CNC rack via FANUC’s proprietary, high-speed serial network communication protocol known as I/O Link.

2. Core Technical Specifications

ParameterEngineering Baseline / Requirement
ManufacturerFANUC (Made in Japan)
Module ClassificationTerminal Type I/O Extension Module B
Network InterfaceFANUC I/O Link Protocol
Typical ConfigurationVDC Logic Interfacing (Digital discrete point control)
Mounting FootprintStandard DIN rail mounting for dense electrical enclosures
Physical Weight~1.00 kg (2.2 lbs) gross packaged weight
093023shr20-30