15:27, EET
December 24, 2019
Greetings,
I’m currently working with Prosys OPCUA server and I’ve written a client using C# .Net. The client worked well with the previous version of ProSys OPC-UA server and I was able to fetch all values from nodes.
However, I recently installed a newer version 4.0.2-108 on windows and tested. I’m able to observe that the OnDataChange event gets triggered only once with value 0 for all nodes after subscription and OnDataChange does not get triggered later.
Further, I checked that the values in the simulator are changing. eg. counters, random, square which I used as nodeid.
Please let me know if there is a problem in the simulator or if there is something that I have missed.
Thanks!
15:23, EET
Moderators
August 6, 2019
Hi,
This sounds strange, the simulations should work normally. Have you tried another client such as our free OPC UA Browser (https://www.prosysopc.com/products/opc-ua-browser/) to confirm that the subscriptions are working? Also you should make sure that the MonitoringMode for MonitoredItems is set to Reporting and that the Data Change Trigger includes the Value.
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