What object-NodeId to use for method call

[hannosius]

Hi,
I am currently trying to figure out how method calling is supposed to be done.

This is the tree of the server:

The "Set output"-method takes one uint parameter indicating the number of the DigitalOutput you want to set.

I am trying to call this method with the following code:

public boolean callMethod(OpcUaClient client) throws UaException, InterruptedException, ExecutionException {

	NodeId object = new NodeId(2, 15150); //???
	NodeId method = new NodeId(1, 60042);

	CallMethodRequest req = new CallMethodRequest(object, method,
			new Variant[] { new Variant(UInteger.valueOf(5)) });

	StatusCode status = client.call(req).get().getStatusCode();
	return status.isGood();
}

This doesn't work. I am not really sure what NodeId to put in for the object-NodeId.
So my guess is that I am using the wrong one there.
Can anyone tell me what I am doing wrong here and what NodeId to use for the objectid-parameter of the CallMethodRequest-constructor?

Thanks in advance for your help!

[kevinherron]

The Object NodeId should be that of the parent Object Node that has a reference to the Method Node, i.e. to call the Set output method in your screenshot the Object NodeId is going to be ns=0;i=85 (Identifiers.ObjectsFolder).

[hannosius]

Hi Kevin,
Thank you very much for your quick response!
I was actually sure that I had already tried that (ns=0;i=85).
But when I did now it worked.
So thank you very much!