摘要
本文讨论了数据采集系统中 PC机和下位机之间的串行通信方法 ,介绍了在工业环境下 PC机和下位机之间串行通信的接口电路 ,以及在 Windows下使用 Delphi实现 PC机与下位机之间串行通信的软件设计。
This paper describes a serial communication means between personal computer and secondary computers in a data collection system, introduces both interface circuit and software design for the serial communication under industrial environment and under Windows with Delphi respectively.
