这是一个VC6.0下编的422串口通信工具，具有报文分析，BCC校验处理，报文显示，报文接收后回复，定时发送等多种功能-This is a series of 422 under VC6.0 serial communication tool with the packet analysis, BCC check processing, message display, message, after receiving responses, from time to time to send a