Historical Access VIs
- Updated2023-02-21
- 1 minute(s) read
Historical Access VIs
Owning Palette: OPC UA Server VIs
Requires: OPC UA Toolkit. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the Historical Access VIs to access historical data and events for OPC UA server applications.
| Palette Object | Description |
|---|---|
| History Data Delete | Deletes history data within a time range. |
| History Data Delete at Time | Deletes history data at specific timestamps. |
| History Data Read | Reads history data within a time range. |
| History Data Update | Updates history data at a specific timestamp. |
| History Event Delete | Deletes a history event. |
| History Event Read | Reads a notifier. A notifier node enables an OPC UA client, which subscribes to the node, to receive event notifications. |
| History Event Update | Updates a history event. |
Example
Refer to the OPC UA Demo.lvproj in the labview\examples\Data Communication\OPCUA directory for an example of using the Historical Access VIs.