Log In
Home
01/07/2022
Offline
Hi,
I have developed OPC UA Client application using CSharp(C#) language.
I am facing one issue. we are not able to receive the data from OPC UA Server if monitored items count is greater than 500.
we can be able to get the data if monitored items count <=500
what could be the issue? How to solve it?
05/30/2017
Offline
Check the server limits.
Chances are you hit a max of 500 per subscription and you are not checking the error code on createmonitoreditems.
Create additional subscriptions.
01/07/2022
Offline
How to check server limits? which parameter shall be configured in OPC UA Server for limits? and how to create additional subscriptions
I have used following code in OPC UA Client.
for (int j = 0; j < nodes.Count; j++)
{
var item = nodes[j].GetMonitoredItem(Opc.Ua.Attributes.Value, true);
item.Notification += new MonitoredItemNotificationEventHandler(OnOperatingNodeMonitoredItemNotification);
var monitoredItemsCount = subscription.BaseObject.MonitoredItemCount;
if (monitoredItemsCount >= 900)
{
subscription = _client.GetSubscription(true);
subscription.Create();
}
subscription.AddMonitoredItem(item);
subscription.Apply();
}
1 Guest(s)
Usage Policy