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  1. Forum
  3. Discussions
  5. QuickOPC-Classic in .NET
  7. OPC Alarms&Events
  9. Event subscription does not receive anything on some machines

Event subscription does not receive anything on some machines

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08 Oct 2019 04:49 #7805 by fancybird
Replied by fancybird on topic Event subscription does not receive anything on some machines
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!

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04 Oct 2019 06:54 #7799 by support
Replied by support on topic Event subscription does not receive anything on some machines
Hello,

are you properly testing for errors in the event handler? Can you post the relevant pieces /logic of it here?

Best regards

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04 Oct 2019 04:57 #7798 by fancybird
Event subscription does not receive anything on some machines was created by fancybird
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.

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Moderators: support
  1. Forum
  3. Discussions
  5. QuickOPC-Classic in .NET
  7. OPC Alarms&Events
  9. Event subscription does not receive anything on some machines
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