Hello ... thank you for the response. I did not know that there is error code in the event argument object. From there, we were able to see the "access denied" error. We were able to find the DCOM configuration issues ... especially with the use of OPC Security Analyzers. Thank you. Thank you!
Hi ... I am seeing a problem that is repeatable. I am targeting Honeywell Experion PKS (EPKS) OPC server, specifically. When I run the application from my development machine, I don't get any events. Query categories works. Event subscription call is fine. I just don't get any events.
When I run the application on the EPKS server itself, I get events and alarms.
When I run the application on one of the EPKS stations, I get events and alarms.
But if I run the application from a non-EPKS machine, I don't get any events.
I am not sure what I am doing wrong. Any help would be appreciated. Thanks in advance.