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Local Historian

The Local Historian plug-in moves data collection, storage, and access closer to the data source to prevent data loss and improve operational efficiency via open access and a single product solution. By plugging into the KEPServerEX...

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Product Overview

The Local Historian plug-in moves data collection, storage, and access closer to the data source to prevent data loss and improve operational efficiency via open access and a single product solution. By plugging into the KEPServerEX communications platform, the Local Historian can connect to any device and add devices in real-time without operational downtime. Its plug-in architecture simplifies configuration, provides flexibility, and makes the information accessible across OPC HDA (an open standard).

Features

  • Collects data consisting of a value, quality, and timestamp from any data source in the server (such as drivers, plug-ins, or system tags)
  • Collects from both static and dynamic server tags
  • Supports persistence to a volume on the local machine (which can be a fixed drive or removable media)
  • Supports access to historical data via OPC HDA 1.20
  • Supports processed read requests (OPC HDA aggregates)
  • Supports data timestamps with one millisecond resolution
  • Supports configurable data collection scan rates as frequent as 10 milliseconds
  • Supports collection deadband
  • Has a configurable data retention policy
  • Imports historical data that has been backed up and removed from active use
  • Has a built-in historical data viewer for quick troubleshooting
  • Supports tiered licensing for up to 10,000 tags

A plug-in is an advanced option that extends the capabilities of the KEPServerEX communications platform. It increases the usefulness of data by transforming it beyond raw data in a device register. 

Plug-ins may be licensed individually or in suites. Additional plug-ins can be licensed on demand as connectivity needs evolve.