XB6-C01SP is a plug-in 1-channel serial communication module that uses the X-bus bottom bus and is compatible with our XB6 series coupler modules. Through different function blocks, it can realize Modbus master and slave station, Freeport and transparent transmission of the three major serial communication functions. The module occupies a small space, the data interaction is simple, and it can meet the requirements of serial communication in different application scenarios.