The OPC UA client driver does not allow configuration of the queuesize. A queuesize of 1 is always used, which may result in loss of value changes coming from the OPC UA server

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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 ...

• OPC-UA Server: DNS Name used in certificate created by zenon.

  The creation of the DNS name in the OPC-UA Server certificate may vary depending on the zenon build and if the machine is within a Workgroup or is part of a Domain. This information can be verified in the certificate, the certificates files (*.der) ...

• Fast value changes in the OPC UA server are not correctly sent to the runtime by the OPCUA32 client driver

  Summary When a value is changing rapidly in an OPC UA server, not all value changes may be available in the zenon runtime even though the OPCUA32 OPC UA client driver is correctly receiving the PublishResponses with the value changes. DescriptionWhen ...

• Checklist: OPCDA Server

  Time estimate: 20 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. Do NOT use DCOM in combination ...

• A variable of the OPCUA32 OPC UA client driver set to alternate value in the runtime may still get updated with a value from the OPC UA server

  Summary When a variable of the OPCUA32 OPC UA client driver is set to "alternate value", an update of the value in the OPC UA server will result in the OPCUA32 client driver receiving the value and forwarding this value to the runtime, overwriting ...