2.4. Connect from an OPC DA client
Prev Chapter 2. Getting Started Next

2.4. Connect from an OPC DA client

When you start an OPC DA client it should immediately be able to connect to the DataHub program, because it is preconfigured to act as an OPC DA server. If no DataHub instance is running, the OPC client will attempt to start it.

If your client does not connect, you can check the DataHub configuration as follows:

  1. Right click on the DataHub system-tray icon and choose Properties.

  2. In the Properties window, select OPC DA.

  3. Ensure that the Act as an OPC Server box is checked.

    [Note]

    If your OPC client requires that you hand-enter the OPC server name, use either Cogent.CogentDataHub or Cogent.CogentDataHub.1 .

  4. For information on any of the other options, please refer to the OPC DA Server section in Properties.

  5. Click Apply button at the bottom of the Properties window to apply the change. You can view connections with the Connection Viewer.

Prev Up Next
2.3. Connect to an OPC DA server Home 2.5. Test MQTT