Trend Logs (bacnet-BacnetHistoryDeviceExt)

This component is a frozen device extension under every BacnetDevice, and the container for BacnetHistoryImport components.

The default view is the Bacnet History Import Manager, used to import data from trend log objects in the device, into the station as histories.

Figure 64.   Bacnet History Device Ext
Image

This folder under the BacnetNetwork > BacnetDevice node in the Nav tree serves as the container for BACnet history objects, which you import from a device into a station.

A BACnet device must contain trend log objects (and/or trend log multiple objects) to make use of histories. A Discover command determines this. If it finds no such objects, the trend logs extension has no practical application.

By default, this container also has a Retry Trigger, for automatic usage as needed.

For general information on this device extension and the retry trigger, refer to the Niagara Drivers Guide.