Thanks for replying.
Okay, that make sense. I will have a look at the AddNodes service.

So, basically “today” the user has to create the nodes manually then, similar to OPC DA, even if they are using OPC UA?

I am currently running the Matrikon OPC (Trial) Server with simulator, do you know if this supports auto-create? or do you know of any other server that does support it?

Best Regards
-Anders

Hi,

Just started using the Easyuaclient and reading, writing and subscribing works well.
But it should also be possible to create nodes using the sdk, right?
Cant find any example showing creation/adding or delete/removal of nodes/tags.

I have also tested just writing to a node that don’t exist, hoping it would automatically be created,
but that just gives some internal error.
ex. OpcLabs.EasyOpc.UA.UAServiceException: OPC-UA service result - An error specific to OPC-UA service occurred
or that the status BadNodeIdUnknown.

Here is some code.
string uaServer = "opc.tcp://server:21381/MatrikonOpcUaWrapper";
EasyUAClient client = new EasyUAClient();
UANodeId node = new UANodeId("nsu=opc.com://localhost/Matrikon.OPC.Simulation/f8582cf2-88fb-11d0-b850-00c0f0104305/DA2.XX;ns=2;s=0:.test");
// or UANodeId node = new UANodeId("ns=2;s=0:.test");
var result = client.Read(uaServer, node); // gives BadNodeIdUnknown
client.WriteValue(uaServer, node, "testing", typeof(string)); // throws exception

any advice?
(it all works if I manually create the node first).

Cheers
-Anders