Method Tab

Prerequisites

You have created an OPC UA destination system and selected a client configuration on the Session tab.

Context

On the Method tab you can select and configure an OPC UA method that is provided by the connected OPC UA server (remote server).

If you are using tag-based notifications, you can send the values of the subscribed tags to the selected remote server method later using notification messages.

If you are using method notifications, the parameter values of the server method are forwarded to the remote method on the remote server by means of the method notification.

The remote method is called from the OPC UA destination system.

Procedure

  1. To select a method, choose Browse in the Method Selection screen area.

    The Browse Methods dialog box is displayed. You can use this to select a method from the connected OPC UA server. For selecting the method, starting from this dialog box, a separate connection is set up to the OPC UA server. When you close the window, this is disconnected.

  2. Choose the Browse pushbutton in the dialog box.

    A view of the address space is displayed that enables methods to be selected.

  3. To display the hierarchy of the address space, open the top node (Address Root) and then all lower-level nodes. Select the method you want.
  4. Confirm your selection by choosing OK.

    The input parameters and output parameters of the selected method are displayed in the corresponding screen areas.

  5. Save your entries.
  6. You can call and test the selected method by choosing Test Method.

    The Test Call of OPC UA Method dialog box appears. The dialog box sets up its own connection to the remote server. The connection is set up when you leave the dialog box. (See also: Test Method.)