How to convert OPC UA to OPC DA

Summary

  1. Download and install Cogent DataHub software.
  2. Start the DataHub.
  3. Connect to your OPC UA server.
  4. Connect your OPC DA client.

For more details and options, see the documentation.

Transcript

  1. How to convert OPC DA to OPC UA.
  2. First, download and install Cogent DataHub software.
  3. We will start by connecting to the UA server.
  4. Start the DataHub, and from the Properties window, select the OPC UA option and click the Add button.
  5. Choose or enter a Discovery Domain.
  6. Choose or enter the endpoint URL for the OPC server.
  7. Leave the other fields at the default settings and click the Connection Test button.
  8. The connection should succeed. Close the window.
  9. Leave the Data Transfer options at the default settings.
  10. Manually select the nodes you want to connect to.
  11. Or choose Load All Nodes on Server.
  12. Enter a meaningful name for the data domain.
  13. Click OK, make sure the “Act as an OPC UA Client” and the “On” button are checked, then click Apply.
  14. Click View Data to see your data in the Data Browser.
  15. Now you are connected to the OPC UA server.
  16. Next we will connect the OPC DA client.
  17. In the DataHub Properties window select the OPC DA option.
  18. Check the box for Act as an OPC Server.  Then click Apply.
  19. In your OPC client, connect to the OPC server named Cogent.DataHub.1.  Add a group, then select your items.
  20. Now your OPC UA server is connected to your OPC DA client.

Background

OPC UA is the latest protocol from the OPC Foundation.  OPC Classic Data Access (OPC DA) is a legacy protocol with a wide user base.  Learning how to convert OPC UA to OPC DA with Cogent DataHub software is a good way to integrate these two protocols, and make them available to all of the other supported protocols, like OPC A&E, A&C, MQTT, Modbus, ODBC, and more.

Skkynet provides Cogent DataHub secure-by-design software and services to let you acquire, aggregate, monitor, control visualize, and network live process data in-plant or over insecure external networks. You can isolate control networks from cyber attacks and integrate industrial data under a unified namespace, all without compromising the plant.

Cogent DataHub products wheel diagram