Discovering OPC UA server points
Server point discovery interrogates the connected OPC UA server to discover the OPC UA objects.
Prerequisites: You are working in
- In the Nav Tree, expand .
- To open the Opc Ua Client Point Manager, do one of the following:
- Right-click the Points node and click and click Opc Ua Client Point Manager.
- Double-click the Points node.
The Opc Ua Client Point Manager opens.
- To configure Discovery Preferences before discovering points, right-click Points, click and expand Discovery Preferences.NOTE: Be sure to configure Discovery Preferences properties before attempting to discover points. It is possible to unintentionally filter out points or data. Refer to the “opcUaClient-OpcUaClientPointDeviceExt” topic for details on these properties.The Property Sheet opens.
These properties control when the discovery prompt appears and which points a discovery job leaves out of the resulting Discovered table.
- Configure preferences and click Save.
- To start the discovery job, double-click Points in the Nav tree and click Discover.The discovery job communicates with the OPC UA server to discover the server’s object structure.
- To browse the discovered objects, expand the items in the Discovered pane.
- To add points to the station database, select the points to add and click Add or double-click on the selected object(s).The Add window opens.
- If the point is writable, change the point
Typeto a writable type as shown above and click OK.The driver adds the point(s) to a subscribed state and updates them with real-time values.
If a point has engineering units, precision, and/or range information, the driver attempts to configure the point’s facets to match. This may not always be possible.