15:47, EEST
Moderators
April 17, 2013
Hello,
This is indeed pretty much what happens in the communication error scenario. The size of the server RetransmissionQueue and the size of queues for individual monitored items will determine whether data gets lost during the communication break. Pictures in pages 159 and 161 in the mentioned OPC Unified Architecture book contain an overview of the subscription architecture.
10:26, EEST
June 22, 2016
Thank you, Heikki.
So I have to combine the MonitoredDataItem with the ServerStatusListener to get the current state of the Item displayed as BAD if there is a communication break, right?
This leads up to the next question: If the connection is reestablished, can I rely on the server to send an update to the item even if there was no change in the data?
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