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4:02, EEST
September 11, 2015
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I am using this code to connect to Kepware OPC server, but everytime I am getting the error
client = new UaClient(“opc.tcp://localhost:49320/Kepware.KEPServerEX.V5/MP.TT1._System._Rate”);
Error
Requested endpoint not supported by the server: opc.tcp://localhost:49320/Kepware.KEPServerEX.V5/MP.TT1._System._Rate [http://opcfoundation.org/UA/SecurityPolicy#None,None]
9:01, EEST
December 21, 2011
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The URL does not look like a valid connection URL for Kepware. Please, try
9:57, EEST
September 11, 2015
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It is working but where can I insert the kepware tag path i.e. Kepware.KEPServerEX.V5/MP.TT1._System._Rate
10:15, EEST
December 21, 2011
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In OPC UA you use NodeId:s when you make a read or write request or subscribe for changes.
You should find the correct NodeId to the tags using a graphical client, such as Prosys OPC UA Client. Note that the NodeId contains a NamespaceIndex and a value (string, integer or such).
Once you have the NodeId, you can use that as a parameter for UaClient.readValue(), for example.
10:29, EEST
September 11, 2015
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I currently have Kepware’s OPC Quick client. How can I get the nodeId of the tag I want to read ?
Sorry, I am new to this!
11:52, EEST
December 21, 2011
Offline
I don’t know that application myself. You should be able to browse the address space and look at the Attibutes of the nodes (objects and variables).
I suggest to refer to the user manual of your application – or check the Prosys OPC UA Client.
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