It consists of a communication cable and a data transmission management device to transmit bidirectional data information.The data communication network is the backbone of the DCS.The structure of the entire distributed control system is essentially a network structure.The field control station,data acquisition station engineer station,operator station,monitoring computer,etc.are all”nodes”on this network,all of which contain CPU and network interfaces.Its own specific network address(node number),which can send and receive data through the network.
由通信电缆和数据传输管理装置组成,用以传送双向数据信息。数据通信网络是集散控制系统的支柱。整个集散控制系统的结构,实质上就是一个网络结构,现场控制站、数据采集站工程师站、操作员站、监控计算机等都是这个网络上“节点”,都含有CPU和网络接口,它们都具有自己特定的网络地址(节点号),可以通过网络发送和接收数据。
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