A SCADA system based on intranet technology
Jian Rong Tan · Dianli zidonghua shebei · 2002
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.