Discovering OPC UA server points

Server point discovery interrogates the connected OPC UA server to discover the OPC UA objects.

You are working in Workbench running on a PC or laptop computer.
  1. In the Nav Tree, expand Config > Drivers > OpcUaNetwork > OpcUaDevice.


  2. To open the Opc Ua Client Point Manager, do one of the following:
    • Right-click the Points node and click Views > Opc Ua Client Point Manager and click Opc Ua Client Point Manager.
    • Double-click the Points node.
    The Opc Ua Client Point Manager opens.

  3. To configure Discovery Preferences before discovering points, right-click Points, click Views > AX Property Sheet 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.

  4. Configure preferences and click Save.
  5. 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.
  6. To browse the discovered objects, expand the items in the Discovered pane.
  7. 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.

  8. If the point is writable, change the point Type to 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.