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01/07/2021
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Hi All,
We have a server where we execute some methods. Based on some conditions we get the different types of alarms that are received by OPC UA and needs to be acknowledged to continue the run.
My question is, Do we need to clear the old inactive or acknowledged Alarms from queue when a new execution is started?
As of now the Alarms queue is maintaining the all list of all old acknowledged Alarms / inactive Alarms?
Thanks and Regards,
Kishore M
05/30/2017
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It is up to the application to decide when it is appropriate to clear the alarm list they maintain.
Many applications will use ConditionRefresh to get the current list of alarms when they start. If you feel a "new execution" is equivalent to an application restart then you could clear the queue and call ConditionRefresh.
01/07/2021
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Thank You Randy Armstrong.
Its actually not application restart, but a new method execution will start.
Here the alarms are specific to that each method execution.
Thanks and Regards,
Kishore M
05/30/2017
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There is no way to answer you query without a complete understanding of the product you are building and its requirements.
You need to make a decision based on the needs of the users of your application.
If the users need that list of expired alarms then you should keep it around. Otherwise, you can clear the list at each execution.
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