The Scan, Alarm, and Control program (SAC) is a system application that runs on a SCADA node. This program is responsible for executing the logic of the database chains. SAC performs the following functions:
Each database chain also contains the information that determines whether SAC processes the chain based on time-based, exception-based, or one-shot processing. A node can perform both time-based and exception-based processing simultaneously. This feature gives you the ability to use the best processing strategy for each data point in your system. See Also |
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