Mitsubishi FX3S-20MR-DS PLC Main Unit for FX Series

The Mitsubishi FX3S-20MR-DS (FX3S-20MR-DS) is a compact programmable logic controller main unit designed for entry-level industrial automation within the MELSEC FX Series. Serving as the central processing unit in compact machinery and automated systems, this controller manages sequential operations, timing functions, digital I/O processing, and system monitoring. The unit features 20 total integrated input and output points, comprising 12 direct-current inputs and 8 relay outputs, powered by an external 24 V DC supply. It incorporates built-in program memory and high-speed processing capabilities, enabling reliable execution of machine control logic in space-constrained installations. Designed for flexible system integration, the FX3S-20MR-DS accommodates expansion options such as optional communication boards and analog adapters to meet diverse application requirements. The controller is suitable for standalone machinery, material handling equipment, packaging stations, and small automated assembly systems. With its robust industrial design and dependable relay outputs, the controller ensures stable operation and straightforward wiring in demanding industrial environments.