摘要
介绍了在上位机和 PLC 组成的小型控制系统中,运用 VC++的串口通讯模块编程进行上位机与 PLC 通讯的实现方法。能满足大多数类似的小型"上位机、PLC"控制系统的控制要求,实时性较高,并降低了成本。
Introduced the technique of communication between PC and PLC with serial port communication module of VC++ in the control system composed of PC and PLC.It is a real time system,could reduce the costs,and fits many similar systems.
