The Yokogawa F3YD64-1P is a high-density 64-point digital output module for the FA-M3 series Programmable Logic Controllers (PLCs). It is designed to control field devices such as relays, solenoids, indicators, and actuators by converting digital signals from the PLC CPU into discrete outputs. This module supports transistor output (sink or source) and is built for high-speed switching applications in industrial automation systems.