Hello.

As long as the monitored items have the same subscription parameters (such as sampling rate), QuickOPC uses just one subscription for them.

Regards

Hi,

May I know what is the subscription logic of EasyUAClient SubscribeMultipleMonitoredItems
The OPC UA server provider suggested that the way my EasyUAClient subscribes to the OPC UA server is causing the server to crash.

I am currently creating 1 EasyUAClient with multiple monitored items (20k)
Will this create 20k item subscription ? or 1 subscription 20k items (please pardon me as I am not familiar with OPC UA)

The server provider suggested that I should be doing 1 subscription with multiple items instead of multiple subscriptions.
Please let me know which is the correct way to do it.

// my logic as following
EasyUAClient  opcUaClient = OpcUaClientManager.GetClient(_serverOpcUaUrl);
opcUaClient.DataChangeNotification += OnDataChange; // Method to run when data comes in

List<EasyUAMonitoredItemArguments> easyUAMonitoredItemArguments = await GetServerNodes(); // around 20k nodes 
opcUaClient.SubscribeMultipleMonitoredItems(easyUAMonitoredItemArguments.ToArray());


Thanks & Regards,
CL