基于串口服务器的PLC网络控制系统

PLC network control system based on serial device server

随着PLC技术日趋成熟,PLC网络控制系统得到了广泛应用.常用的组网方式有三种:基于通用串口、基于专用总线、基于以太网.着重提出了一种新兴的组网方式,即基于串口服务器的组网.它有着串口通信的简单方便,又具备了以太网通讯的高效稳定的优势.文中结合某污水处理厂自动控制系统的应用实例,介绍了基于串口服务器的网络控制系统.实践证明,基于串口服务器的组网方式简便、稳定、高效,是一种值得推荐使用的组网解决方案.

Along with development of PLC＇s technology, PLC network control system has been applied widely. Typically, there are three modes to construct a network： base on general serial port , or dedicated Field-bus ,or Ethernet. In this paper, a new kind of constructing a network method base on serial device server is provided. It has a simple serial communication and it has an advantage in highly efficient and stable Ethernet communication. In a sewage disposal plants, the network control system based on serial device server is applied. Practice show that this method is simple, stable, and efficient. It is a worth recommending use in network solution.