Mitsubishi FX3U-422-BD RS-422 Communication Board for FX Series PLCs

The Mitsubishi FX3U-422-BD (FX3U-422-BD) is a dedicated communication interface board designed for integration with Mitsubishi FX Series programmable logic controllers, specifically the FX3U series PLC system. Operating as an internal expansion adapter, this module mounts directly onto the front expansion slot of the main base unit, providing an auxiliary RS-422 serial communication channel without consuming additional base chassis space or external I/O points. It enables straightforward connectivity for programming tools, human-machine interfaces, GOT series operator terminals, and compatible peripheral devices used throughout industrial control environments. Engineered to support dependable data exchange and system monitoring, the board serves factory automation applications requiring secondary serial communications, configuration access, or concurrent operator panel connections alongside primary controller ports. As an authentic Mitsubishi Electric automation spare component, the FX3U-422-BD provides a compact and reliable hardware solution for extending the peripheral capabilities of established FX3U automation platforms in manufacturing, assembly lines, packaging machinery, and material handling systems.