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'.
The Wonderware Historian driver enables you to export ClearSCADA historic data to a Wonderware Historian On-Premise server or to Wonderware Historian Online.
NOTE: This feature is only supported for Wonderware Historian 2014 R2 or later.
When you have installed the driver, you can then configure a ClearSCADA point or accumulator so that ClearSCADA can export its data to specific Wonderware Historians. ClearSCADA will automatically start exporting new data for an enabled point or accumulator to the selected Historians. It does this by using an API called HCAL (the Historian Client Access Layer).
HCAL is installed when you install the Wonderware Historian driver. ClearSCADA sends historic data to HCAL, which then manages its onward transmission to the Wonderware 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 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). HCAL applies no further filtering.
HCAL can store exported historic data in a store-and-forward cache. This is useful if the network connection to the Wonderware Historian is intermittent or unavailable. In such a situation, HCAL will cache the export data and when the link becomes available again, it will send it to the Wonderware Historian. For more information about HCAL, see the Wonderware Historian documentation.
For each enabled point or accumulator, ClearSCADA uses HCAL to create a new tag in the selected Wonderware Historians. It does this when it exports the first data to the Historians (see Wonderware Historian Tags).
To export historic data to a Wonderware Historian, follow this procedure:
- Install the Wonderware Historian Driver.
- Configure the Wonderware Historian Driver Server Setting to set up the store-and-forward cache.
- Add a Wonderware Historian Database Item to the ClearSCADA database for each Wonderware Historian to which you want to export. This database item holds the Wonderware Historian export settings.
- Configure each Wonderware Historian Database item (see Configure a Wonderware Historian Database Item). If you want to export data to Wonderware Historian Online, you need to set the security token (see Exporting Historical Data to Wonderware Historian Online).
- Place the Wonderware Historian database items 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).
You may also want to read the following:
- The Historic Export Alarm Category
- The Historic Export Event