1.2. Test with simulated data

There is a data-generating program that comes with the OPC DataHub called DataSim. You can run DataSim locally to create data for various connection scenarios.

  1. Start the OPC DataHub if it isn't already running.
  2. Start DataSim using the Windows Start menu, or by double clicking the desktop icon.
  3. Open the DataHub Data Browser by right clicking on the DataHub system-tray icon and choosing View Data from the pop-up menu.
  4. Select the DataSim data domain in the left-hand pane of the window.
    The Data Browser window should fill with simulated data updating in real time. The four updating data points are Ramp, Sine, Square, and Triangle.
  5. You can also click the View Connections near the bottom of the Properties window to see your currently configured connections:
    The Connection Viewer shows all active connections in the OPC DataHub.
  6. You can click the More... button in DataSim to access some options for changing the data feed.
    Briefly, you can change the Configurable Options and click the Apply Changes button to apply them. The Waveform Parameters and Update Frequency are all points in the OPC DataHub, and the corresponding points change their values in the Data Browser as you make the changes. Changing the Data Domain from DataSim will yield no results until custom data domains are configured for the DataHub.

    If you shut down DataSim, its points will still appear in the DataHub until it is shut down and restarted. Please refer to Section 17.1, “Data Points” for more information on creating and deleting points.

Now you are ready to start using the DataHub.