版本：

32 channels of photoelectric isolation digital transistor output, RS485 Modbus RTU standard communication, networking with PLC, etc

版本：

版本：

Input 8-channel voltage / current analog acquisition, using RS-485 interface, with optocoupler isolated communication. The application layer adopts the standard Modbus RTU protocol, which can easily network with PLC and touch screen.

It provides RS232, RS485, RS422 transparent data interface on the same module, which can adapt to any standard or non-standard user protocol. In the data transmission state, transparent data transmission is carried out.