基于VB中MSComm控件的串行通信

Serial communication based on MSComm controlware in VB

为了降低仪器仪表成本、减小体积,采用串行方式传递数据。要做到准确无误,PC机和单片机的波特率必须一致。VB中的数据格式必须采用二进制。利用MSComm控件的事件驱动通信方式捕获并处理通信中发生的事件和错误。采用RS-485串行总线标准以实现远距离信息传输。

To decrease prime cost and volume of instruments and apparatus, serial communication format for transmitting is adopted. In order to ensure accuracy of communication, the Bout has to be accordant between PC and Microcontroller. The binary is chosen in data form of VB also. Events or errors occurred in communication are caught and dealt through the communication style of event driving in MSComm control. RS-485 serial communication bus standard is adopted, so that information transmission for a long distance is achieved.