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Subscription of the same item in two different objects with different updaterates.

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31 Jul 2014 05:57 #2113 by LuisGar

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30 Jul 2014 16:27 #2107 by support
Hello, the behavior you describe is by design. It is an optimization based on an idea that multiple subscriptions can be replaced by a single one with the fastest rate. Depending on the requirements, sometimes this is not desired, as it is in your case.

You can choose a different behavior as well.

I suggest that you set the Isolated property on each of your EasyDAClient objects to 'true', right after instantiating them.
The following user(s) said Thank You: LuisGar

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30 Jul 2014 07:22 #2104 by LuisGar
Hi.

I am trying to generate two different objects, one for visualization, the other to store the values gotten from the OPC server in the database, I want to subscribe the OPC items at different rates, for example I want for visualization to display the values every 1000 ms and to store them every 5000 ms.
I have two EasyDAClients, with one of them I update the visualization with another one I do update my DB. If I susbcribe an item just in the DB client, it update correctly every 5000 ms, but as soon as I subscribe the same item in the Visu Client, I also get updates in my DB every 1000ms,

Is there a reason why it works in that way?

It is possible two have different Clients, with the same OPC item but at different rates?

Best Regards

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