Hello.

I have one question.

In a situation where values ​​are read every second using OPC DA's ReadMultipleItems function,

When the OPC DA Server is shut down for a certain period of time (for example, about a day) and then turned on,

Is it possible to reconnect to the OPC DA Server and obtain the value normally again just by continuously calling the OPC DA's ReadMultipleItems function?

Hello
I can connect to the remote OPC server and read multiple tags with the following code, without problem. But I want to read the items periodicaly.
If I run the code periodicaly, i think i will also make the connection to the OPC DA Server each time repeatedly.
How can I first just make the connection to the OPC DA server, and then read the items? (seperately)
So , i could run just the reading part periodically.
I couldnt a find a code example, for just connecting to the server (without reading tag)

Or is there a better way for reading periodically?


public static void Main1()
{
// Instantiate the client object.
var client = new EasyDAClient();

DAVtqResult[] vtqResults = client.ReadMultipleItems("opcda://10.92.XXX.XXX/OPC.IwSCP.1",
new DAItemDescriptor[]
{
"Simulation.Random", "Trends.Ramp (1 min)", "Trends.Sine (1 min)", "Simulation.Register_I4"
});

for (int i = 0; i < vtqResults.Length; i++)
{
Debug.Assert(vtqResults != null);

if (vtqResults.Succeeded)
Console.WriteLine("vtqResults[{0}].Vtq: {1}", i, vtqResults.Vtq);
else
Console.WriteLine("vtqResults[{0}] *** Failure: {1}", i, vtqResults.ErrorMessageBrief);
}
}