【摘要】 介绍了当今广泛采用的一种微机监控系统。该系统主要采用了Intranet技术 ,将监控系统中的后台服务器、操作员工作站、通信前置机及远程终端单元 (RTU)分布在网络的不同节点上 ,各节点之间采用统一的网络通信规约 ,节点之间的通信采用广播通信方式 ,各个节点根据自己的功能对网络上的报文采用相应的处理方式。相同功能的节点可以冗余配置 ,它们之间相互独立、相互备用 ,节点与节点之间的关系是透明的。采用这种结构的微机监控系统大大提高了系统的可靠性、容错性及可扩展性 ,同时也利于系统的灵活配置。更多还原

【Abstract】 A widely used SCADA system is introduced,which mainly adopts the Intranet technology.The backend server,operation workstation,communication front end and remote terminal unit are distributed on the net as nodes.The communication between nodes applies unified net communication protocol in broadcast mode.Each node processes net messages according to its own functions respectively.The nodes that have same functions can be configured redundantly in the system.They are independent but standing by for each other.The relationship between nodes is transparent.With this kind of structure,the system reliability, fault tolerance and expansibility are greatly improved.In addition,this is a benefit to the smart system configuration.更多还原