Exporting standard history
You typically use Discover in the Bacnet Niagara Log Export Manager for any standard history you wish to export to BACnet as trend log object—that is, without the ability for sequence number
access from BACnet. Using a discovery job is not necessary for the history of any component in which you have already added
one of the BacnetTrendLogExts—as the BACnet driver automatically added a BacnetTrendLogDescriptor under the root of the Export Table.
Prerequisites: You are working in
- Expand followed by expanding the BACnet network node in the Nav tree, right-clicking the Export Table, and clicking
- Click Discover.The top pane shows the histories under the station’s folder.
As with other manager views featuring online discovery, learn mode in Bacnet Niagara Log Export Manager has two panes:
- Top (discovered) Local Histories pane—listing all histories in the local station.
- Bottom (database) Exported Objects pane—listing histories currently exported to BACnet. These include both types of log descriptor components—each essentially a pointer to the exposed history, with additional slots that determine how BACnet access/writes are handled.
- Select a history and click Add.The system exports the history object.
When exporting, the manager automatically performs object ID maintenance on exported files, ensuring that no duplicate combinations
of object type and instance number are created.