Local Historian

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.