Technical Reference Manual - InduSoft

Communication with Other Devices
Note: This feature requires that the Peer Name Resolution Protocol service be running on both
the client station and and the discovery server. PNRP has been built into Microsoft Windows
since Windows XP Service Pack 2, so this shouldn't be a problem in most situations.
4. In the Server list, type or select the URL of the OPC .NET server to which you want to connect. If the server
you want doesn't appear to be available, click Refresh the update the list from the discovery server.
5. In the Protocol list, select the network protocol to be used to connect to the server. (For more information
about the available protocols, please refer to Microsoft's documentation for Windows Communication
Foundation.)
Note: If your OPC .NET configuration has different servers/endpoints for each operation, then do
the following:
1. In the Protocol list, select custom. The Custom button becomes enabled.
2. Click the Custom button. The Endpoints dialog is displayed.
3. Use the dialog to specify the server/endpoint for each operation.
6. In the User Name and Password boxes, type your login credentials for the OPC .NET server.
Note: If the OPC .NET server is using Microsoft Active Directory, then User Name must be in the
domain\username format.
7. Select Callback to have the server send values to the client only when the values change, or select Polling to
have the client periodically request values from the server.
In most cases, you should select Polling to keep the connection active.
8. Click OK. The connection is saved in the OPC .Net Connections folder in the Project Explorer.
Configuring a new OPC .Net Client worksheet
To configure a new OPC .Net Client worksheet:
1. Do one of the following:
• On the Insert tab of the ribbon, in the Communication group, click OPC Client and then select OPC .Net
Client from the drop-down list; or
• In the Comm tab of the Project Explorer, right-click OPC .Net and then click Insert on the shortcut menu.
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