1、MULTIPLE FUNCTION: Integrate 2 communication ports, both support PPI communication, can expand up to 7 IO modules, support 256 channels of digital and 64 channels of analog. 2、PID CONTROL: High speed computing and processing capabilities, simple and flexible PID sub function, can facilitate users to achieve more PID control. 3、POWER DOWN KEEP: Adopt for FLASH technology to keep power off for a long time, for AES iterative encryption algorithm, protect users intellectual property rights. 4、RS485 PORTS: The industrial controller has 2 RS485 standard PPl communication ports, the PPI baud rate is 9.6K, 19.2K and 187.5kbps, and the free port baud rate is 1.2k-115.2kbps. 5、APPLICABLE SCENES: Relay type PLC industrial controller is compatible for S7-200 host, compact in structure, simple in wiring, widely used in industrial automation equipment.