AccessOPCUA: Process Gateway closes unexpectedly on Windows after an OPC UA client sends a read request for ServerCapabilities->SoftwareCertificates

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• FAQ: How can I browse an OPC UA Server using the zenon OPC UA Client Driver?

  Go to Drivers > New Driver Create a Driver of Type "OPC UA Client Driver" Open the Driver Configuration Go to "Connections" Create a new Connection Enter your Discovery URL Enter your Server URL manually or click the 3 dots to browse the Discovery ...

• The OPC UA process gateway closes with an unhandled exception or stops responding after communicating for several days with an OPC UA client via subscribtions.

  Summary With an OPC UA process gateway running and an OPC UA client connected that retrieves variable values through subscribtions, the OPC UA process gateway in 7.10 may close unexpectedly with an unhandled exception after communicating for several ...

• Checklist: Process Gateway cannot establish a reliable communication

  Time estimate: 45 minutes Please go through all the points in the following checklist. If necessary, confirm with IT Department any information you cannot verify before contacting your local COPA-DATA Representative. Checklist usage: #. [Quick hints] ...

• Checklist: Process Gateway cannot start

  Time estimate: 30 minutes Please go through all the points in the following checklist. If necessary, confirm with IT Department any information you cannot verify before contacting your local COPA-DATA Representative. Checklist usage: #. [Quick hints] ...

• The OPC UA server under specific circumstances does not correctly remove an online variable after an OPC UA client sends consecutive read requests for the same node.

  Summary When an OPC UA client sends read consecutive requests for the same node with milliseconds difference between single requests, the OPC UA server may under specific timing conditions not correctly remove the temporary online variable that is ...