How to convert OPC DA to OPC UA

No access to YouTube? Click here to view locally

Summary

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

For more details and options, see the documentation.

DataHub product used: DataHub OPC Gateway

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 DA server.
  4. Start the DataHub, and from the Properties window, select the OPC DA option and click the Add button.
  5. Choose an OPC server.
  6. Enter the Data Domain Name “OPC DA server.”
  7. Set a maximum update of 100 milliseconds for now.
  8. Leave the other options at the default settings.
  9. Manually select the points you want to connect to.
  10. Or choose Load All Items on Server.
  11. Click OK and Apply.
  12. Click View Data to see your data in the Data Browser.
  13. Now you are connected to the OPC DA server.
  14. Next we will connect the OPC UA client.
  15. In the DataHub Properties window, select the OPC UA option.
  16. Make sure the box for Act as an OPC UA Server is checked, and the protocols you need are also checked.  Then click Apply.
  17. To enable remote connections, select Security and then click the Configure button.
  18. Under Users, click the Add button to add a Built-In User.
  19. Enter a username and password.
  20. Uncheck the Require TOTP Authentication box because this is a non-interactive connection.  Then click OK.
  21. In the Roles, check the All Data Full Access box.  Then click OK. This DataHub instance is now configured as an OPC UA server.
  22. In your OPC UA client, add the Cogent DataHub server.  To connect remotely, you will need to enter the username and password.  Then select your nodes.
  23. Now your OPC DA server is connected to your OPC UA client.

Background

OPC Classic Data Access (OPC DA) is a legacy protocol with a wide user base. OPC UA is the latest protocol from the OPC Foundation.  Learning how to convert OPC DA to OPC UA 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