Hello Heikki,

Thanks for the reply,
Can i read a value directly from a simulation server (Prosys) without creating a nodeId. is there any other way to read without creating a nodeId.
Regarding the syntax, i try to create a nodeid in my client program i am not able to do that. is there any example syntax you have it would be useful for me to understand how to access the adressspace correctly.
Regards

Hi Heikki,

So if we need to read a value from the simulation Server we have to create nodeid everytime ?.
yes i have some issues with the code. i am not sure whether its is correct or not, could you take a look into it and tell me what correction should i need to do. As Random1 is already in server i used Random2.

public class CreatingNodeId {
public static void main(String[] args) throws Exception {
UaClient client = new UaClient(“opc.tcp://karthik:53530/OPCUA/SimulationServer”);
client.setSecurityMode(SecurityMode.NONE);
initialize(client);
client.connect();

NodeId parentIdNode = new NodeId(5, ““85/0:Simulation”);
NodeId newNodeId = new NodeId(5, “Random2”);

NodeId sampleNodeId = new NodeId(5, “Random1”);
UaNode sampleNode = client.getAddressSpace().getNode(sampleNodeId);

sampleNode .setBrowseName(new QualifiedName(5, “Random2”));
sampleNode .setDisplayName(new LocalizedText(“Random2”));
NodeId retNodeId=client.getAddressSpace().addNode(parentIdNode, client.getAddressSpace().getReferenceTypeId(), newNodeId,
sampleNode .getBrowseName(),sampleNode .getNodeClass(), sampleNode .getAttributes(), sampleNode .getNodeId());

this line has some error //sampleNode .setBrowseName(new QualifiedName(5, “Random1”));//
The method setBrowseName(org.opcfoundation.ua.builtintypes.QualifiedName) in the type UaNode is not applicable for the arguments (codegen.parser.QualifiedName)
Looking for your reply.
Regards

Hi Heikki,

Sorry for the confusion here!! i misunderstood the previous post!!.
Thanks for being patient and clearing my doubts.

1) i need to read a value from the server. instead of creating an Nodeid to read a value, what i thought is , i should create a Node in addresspace. thats why i was creating a node in server (which is wrong). now everything is clear. i am able to read a value from the server

new NodeId(5, “Counter1”);
new NodeId(5, “Random1”);
DataValue value = client.readValue( new NodeId(5, “Counter1”));
DataValue value1 = client.readValue(new NodeId(5, “Random1”));

when i run this, i am able to get the value of the counter1 and random1.

2) Reading the error while creating a node. i am not sure about the error and its solved somehow when i tired to import the files again.
when i run the same code as i posted above its shows an error message as “server does’t support the requested service”. is there a way to add a node to the server just curious to know about!!

Regards
karthi