This driver is a stand-alone driver. It provides additional functionality to enable ClearSCADA to interface with specific supported systems or devices. To interact successfully with such systems or devices, you need to:
- Install and run the driver
- Ensure that the driver is licensed
- Configure the required database items and settings on the driver
- Ensure that the database items (and any database items on which they depend) have valid, saved, configuration and are 'In Service'.
Intended Audience
This guide is designed to be used by engineer-level users who are responsible for configuring ClearSCADA to export ClearSCADA historic data to a Wonderware eDNA Historian server.
The guide also contains information for:
- Operators and engineers who use the Wonderware eDNA Historian driver to export data.
- Maintenance engineers.
Document Scope
This guide explains how to configure and operate your ClearSCADA system so that it can export ClearSCADA historic data to a Wonderware eDNA Historian server.
Prerequisite Reading
This guide contains technical information that is intended for users that are sufficiently familiar with ClearSCADA configuration and operation. Before reading this driver guide, ensure that you are familiar with:
- ClearSCADA configuration practices, procedures, and the configuration of properties that are common to many database items. For more information, see the ClearSCADA Guide to Core Configuration, and the ClearSCADA Guide to Core Point Configuration.
- Driver structure, components, and configuration properties, pick actions, and status attributes that are common to many drivers. For more information, see the ClearSCADA Guide to Drivers.
Some sections of this guide are intended for operator-level users. These sections are intended for users that are familiar with the navigational and operational aspects of ClearSCADA. Before reading the operational sections in this guide, ensure that you are familiar with:
- The ClearSCADA user interfaces (ViewX and WebX), the various types of display, their navigation and operation. For more information, see the ClearSCADA Guide to ViewX and WebX Clients.
The Wonderware eDNA Historian driver enables you to export ClearSCADA historic data to a Wonderware eDNA Historian server.
When you have installed the driver, you can then configure a ClearSCADA point or accumulator so that ClearSCADA can export its data to a Wonderware eDNA Historian. ClearSCADA will automatically start exporting new data for an enabled point or accumulator to the Historian. It does this by using an API called eDNALinkMx.
ClearSCADA sends historic data to eDNALinkMx, which then manages its onward transmission to the Wonderware eDNA Historian. ClearSCADA exports historic data at the same time as it stores the data in the ClearSCADA database. It only exports newly created historic data. It will not export data that was created before you place the Wonderware eDNA Historian database item 'in service'. ClearSCADA will not export data that it did not store due to historic compression or filtering (see Historic Data Compression in the ClearSCADA Guide to Core Point Configuration). eDNALinkMx applies no further filtering.
eDNALinkMx can store exported historic data in a cache. This is useful if the network connection to the Wonderware eDNA Historian is intermittent or unavailable. In such a situation, eDNALinkMx will cache the export data and when the link becomes available again, it will send it to the Wonderware eDNA Historian. For more information about eDNALinkMx, see the Wonderware eDNA Historian documentation.
For each enabled point or accumulator, ClearSCADA uses eDNALinkMx to create a new Object ID in the Wonderware eDNA Historian. It does this when it exports the first data to the Historian.
To export historic data to a Wonderware eDNA Historian, follow this procedure:
- Install the Wonderware eDNA Historian Driver.
- Configure the Wonderware eDNA Historian Server Setting to set up the cache.
- Add a Wonderware eDNA Historian Database Item to the ClearSCADA database. This item holds the Wonderware eDNA Historian export settings.
- Configure a Wonderware eDNA Historian Database Item.
- Place the Wonderware eDNA Historian database item In Service.
- Configure the Historic details for each point or accumulator for which you want to export historic data (see Defining Historic Details for a Point in the ClearSCADA Guide to Core Point Configuration).
Historic data is only exported for points and accumulators for which a Wonderware eDNA Historian database item is specified in Export section of the configuration Form. Data that is subsequently stored in the ClearSCADA historian will be exported to the specified Wonderware eDNA Historian servers. For more information about both of these requirements, see Define the Historic Export Details in the ClearSCADA Guide to Core Point Configuration.