Mitsubishi Electric FX3U-16MR/ES-A Programmable Logic Controller

The Mitsubishi Electric FX3U-16MR/ES-A is an all-in-one MELSEC-F FX3U programmable logic controller that combines a CPU, power supply, and I/O block into a compact unit for small- to mid-sized automation tasks. It provides 16 I/O points—8 inputs and 8 outputs—with 24 VDC input compatibility (sink/source) and relay outputs, all powered from a 100–240 VAC supply and drawing about 30 W under typical operation. The controller features 64K steps of program memory and high-speed built-in processing and positioning functions, plus a built-in RS-422 communication port to support reliable sequencing and data exchange in packaging lines, conveyors, CNC interfaces, and automated production lines. Expandable to 256 I/O locally and up to 384 with remote I/O, the FX3U-16MR/ES-A is configured for DIN rail or panel mounting, reflecting the all-in-one design of the MELSEC-F FX3U series. In practice, it’s commonly deployed in packaging machines, conveyors, assembly machines, material handling systems, printing equipment, and process control applications where precise timing and flexible I/O expansion are critical, and it serves as a practical upgrade, retrofit, or replacement for legacy controllers.