vb6.0 mscomm实现短信发送！可以发送英文和汉字，实现了转码！-vb6.0 mscomm achieve SMS! Can be sent in English and Chinese characters, achieved transcoding!

使用串口与三菱PLC通信，进行命令解析与转码，并发送，读取plc回应命令，进行求和校验-Using the serial port and Mitsubishi PLC communication, command analysis and transcoding, and send, read the plc response command, the sum check

实现文本读取、字符转码、Moudbus协议创建和串口通讯。(Implementation of text read, character transcoding, Moudbus protocol creation and serial communication.)