Visual Basic在系统机和前端机群间串行通讯中的应用

The Application of Visual Basic to the Serial Communication between the System Computer and the Front-end Computers

利用VB中的通讯控作MSCOMM实现系统机和前端单片机群之间的串行通讯,探讨了上位机和下位机数据传输格式的统一问题,并以一化工厂液位测控系统上、下位机之间串行通讯为例给出了相关程序。

The paper introduces how to realize the serial communication between the system computer and the front-end single-chip computers by the communication control of VB-MSComm. It also discusses how to make the transformation data-form correspondent. Based on the example of the serial communication between the upper and lower computers for liquid level measurement control system in a chemical plant.it puts forward the related program.