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Question on profiles and publishing.

Kobe Van herwegen

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05/20/2019

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09/25/2019 - 06:32

Hello,

I’m browsing the profiles, trying to set requirements for an opc ua server I will be using.

For the server profiles, there is a category “Subscription Services”. There it states a server should support at least 5 Publish Service requests per Session.

Can someone please explain me what that means? What exactly is a publish service request and how can this impact an application?

Does it mean you can only subscribe to 5 variables, and receive notifications when they change?

http://opcfoundation-onlineapp…..Min05.html

Kind regards,

Kobe

Randy Armstrong

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05/30/2017

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09/25/2019 - 09:41

The number of publish service requests affects the number of subscriptions that a client can effectively use but it is not a linear relationship. It depends on how frequently notifications are generated in each subscription. It also affects how fast the client can get notifications when the network latency is high.

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