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The NETx Servers provide a standardized OPC UA (Unified Architecture) interface. OPC UA is one of the most important communication protocols for Industry and the IoT.

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The OPC UA extension is available through the Extension Manager. When the server is stopped, the Extension Manager can be started from the studio menu Extensions / Manager / Start extension manager...

  1. Open the Extension Manager on the PC where you have the Internet connection.


  2. Navigate to the "Not installed" tab. Select the "OPC UA". Afterwards, press the "Install" button,

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  3. After a successful installation the following confirmation dialog appears.

    image2018-8-29_12-51-29.png

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Using these URLs, you can connect from any OPC UA client to our NETx Server.

Access rights and permissions

If an OPC UA client is connecting to an OPC UA server, a secure transport channel is established. In addition, the OPC UA client must authenticate to the OPC UA server using a username and password. In our OPC UA server configuration, it is possible to define one user (i.e. username and password) who has full access to the whole OPC UA address space:

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As an alternative, anonymous authentication (i.e. connection without username / password) can be enabled:

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For our NETx BMS Platform, a more sophisticated authentication scheme is possible. If enabled, the user database of the NETx BMS Platform can be used:

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This means that the same username and password combinations are used as for the visualization and Web Manager login. Starting with NETx BMS Platform R2 Build 1000, for each BMS user, the role permission for OPC UA can be configured within the Web Manager:

  • Super Administrator: full access to the OPC UA address space
  • Administrator: full access to the OPC UA address space
  • Manager: full access to the OPC UA address space
  • Viewer: the user has read-only access to the OPC UA address space


Info

For troubleshooting, the log level of the OPC UA driver can be increased. The corresponding log entries are stored in a separate log file (<WorkspaceDirectory>\LogFiles\xio.OpcUa.log). More information about the configuration can be found in the OPC UA driver configuration.

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