![]() ![]() So, at that time for improvisation, with the main central computer known as a primary unit, a second computer similar to that of the main computer was used.Īlthough the second computer was redundant a proper connection is maintained between the two computers so that the redundant one is properly synchronized with the primary unit. This central computer manages and performs the various functions of the SCADA systems like RTU polling, processing of data and information, archiving of data, as well as generating the report along with running application programs.ĭue to this reason, in such architectures, the reliability of the centralized computer was the main concern. In the central architectural approach, a single powerful central computer was used. And after 1960 till 1980, a large category of SCADA systems was based on centralized architecture irrespective of the type of executing process. We have discussed in the previous article that first-time SCADA systems came into existence in the year 1960s. Let us first discuss what was the concept of central architecture and further, we will discuss the present architecture of SCADA systems. ![]() Now a day most of the SCADA systems are based on a distributed approach but initially at the time of coming into existence central architectural approach was very common.
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