The OPCUA client driver should be able to represent special values in the runtime

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• The OPCUA client driver may cause the runtime to stop responding under specific circumstances

  Summary The OPCUA client driver uses the due time for publish responses (keepalive) to check if the OPCUA server is still responding. Normally if the connection to the OPCUA server is lost, the connection is closed at the TCP level. If however no ...

• FAQ: What are Installation and Security considerations of the zenon Smart Server and Smart Client?

  The attached document (English only) describes in some detail the specifics of the zenon Smart Server Application and the zenon Smart Client Application. Also a short explanation of security features and components is given. More information about ...

• The CPU usage of the OPCUA client driver in the runtime gradually increases over time

  Summary The CPU usage of the OPCUA client driver in the runtime gradually increases over time. When using multiple OPCUA client drivers, the system may eventually stop responding when all CPU cores are running on full load. Description The CPU usage ...

• The OPCUA server in the process gateway stops updating variable values from the runtime under specific circumstances

  Summary When the runtime is reloaded following changes to the driver configuration, while the OPCUA server in the process gateway is running and a OPCUA client is connected, subcribing to value changes (Data Access) for variables (nodes) in the OPCUA ...

• The OPCUA Client driver subscribes to array elements inefficiently causing slow performance with many large arrays.

  Summary The OPCUA client driver subscribes to single array elements which causes slow performance with an OPCUA server with a larger number of large arrays. (>150.000) The peformance of the OPC UA client driver should be improved in regard to ...