Control System Process Data Archiving: Strategy and Methodology
Data stored in a historian server is useful for analysis and troubleshooting. Learn about data archiving techniques for control systems, as well as what type of data is stored and the tools to make it happen. Real-time process data in the EMS/DMS/SCADA system is stored in the relational database and only holds the current values of the measurement and status of the object. Therefore, it has no knowledge of process history. Historical data stored in the archiving/historian server can be viewed by reports, trends/curves, and single-line diagrams using the operator workstation.