Overview
SCADA shows the current state of a system. A data historian preserves what happened over time: alarms, temperatures, pressures, speeds, energy and batch parameters.
This historical memory allows trends, root-cause analysis and quality documentation. Without it, every investigation starts from opinions instead of evidence.
For production sites, the value is clear: fewer repeated faults, faster diagnosis, better reporting and stronger traceability.
Technical point: Why production data must be stored, analysed and connected to decisions.