CP1W-CN811 is a communication module for Omron PLCs. It is a dedicated module for communicating with external devices.CP1W-CN811 can be connected to Omron CP1 series PLCs for data transfer and communication functions between different devices. The module supports RS-232C and RS-485 communication interfaces, allowing data exchange and control with other devices such as computers, touch panels, and HMI (Human Machine Interface). By using the corresponding communication protocols and software, it can realise the functions of data acquisition, control and monitoring with external devices, etc. CP1W-CN811 is a reliable and efficient communication module, which is widely used in automation control systems.