Hello.
I will contact you at the email address used to register with the Forums.

Regards

Hello.
The EasyUAApplication has been introduced in QuickOPC 2023.1 (5.71), so you need this or newer version (kb.opclabs.com/Versions ).

It works in general with any QuickOPC edition. The parts that are limited to Enterprise Edition are those that have to do with CA-generated certificates, using OPC UA Global Discovery Server (GDS) and Certificate Services (CM).

So far you have not indicated that you have to use the GDS in your system. It looks like that you are using self-signed certificates. For that, any edition is sufficient.

Best regards

Hello.

Yes, the length of validity period of the auto-generated client certificate can be changed. See e.g. opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...%20Instance%20Certificate.html . In the part "Instance Certificate Auto-Generation", it describes properties like MaximumExpirationDate and ValidityPeriodInMonths, and there is even an example showing how to do it (note that the example removes the old certificate first, in order to prove the point; but then it would re-generate it every time the app runs, which is not what you want, so the part that removes the certificate will not be in your code, at least not regularly executed).

You can also generate the whole certificate externally use some custom tool, and then let QuickOPC just use it.

To your other question, all our product edition/license types include OPC "Classic" Data Access (COM/DCOM-based).

I hope this helps.

Best regards

Hello.

What is PDA? Is that you OPC client app?

Regards