【摘要】 分布式控制是当前工业控制中最为流行的控制模式 ,代表了工业控制的发展趋势 而在分布式控制系统中 ,主机与前端机群之间的数据通信是整个系统的关键 本文基于RS485的串行通信模式 ,介绍了RS485通信子系统的硬件设计、通信协议以及软件控制程序流程图更多还原

【Abstract】 The distributed control system is the most popular control mode and represents the developmental trend of industrial control. Moreover in the distributed control system, the data communication between host and frontal computer is the key to the whole system. Based on the RS485,a serial communication model is presented in this paper. The design of hardware,communication protocol and flowchart of software control are also introduced.更多还原