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OPCUA read value issue

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25 Aug 2021 19:12 #10147 by support
Replied by support on topic OPCUA read value issue
Duplicate of www.opclabs.com/forum/feature-requests-product-improvement-i...8-opcua-read-value-issue#10146, will be handled there.

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25 Aug 2021 18:19 #10145 by brandon.skiles@subaru-sia.com
OPCUA read value issue was created by brandon.skiles@subaru-sia.com
I am having a problem trying to read a value from an OPC Server (TOP Server). I am sure that my endpoint descriptor that I am using is correct because it returns multiple nodes when I use EasyUAClient.BrowseDataNodes. When I run the follwing code:

EasyUAClient easyUAClient = new EasyUAClient();
var nodes = easyUAClient.BrowseDataNodes("opc.tcp://DevSSS.ccrtest.ccr:49380", "nsu =TOP Server;s=TESTPLC1.TESTPLC1");
foreach (var node in nodes)
{
Console.WriteLine(node);
}

BodyStyle -> nsu=TOP%20Server ;ns=2;s=TESTPLC1.TESTPLC1.BodyStyle (Variable)
CarrierNumber -> nsu=TOP%20Server ;ns=2;s=TESTPLC1.TESTPLC1.CarrierNumber (Variable)
ColorCode -> nsu=TOP%20Server ;ns=2;s=TESTPLC1.TESTPLC1.ColorCode (Variable)
D0004520 -> nsu=TOP%20Server ;ns=2;s=TESTPLC1.TESTPLC1.D0004520 (Variable)

I am then trying to read a value from one of the nodes that was found using and receiving this error:

OpcLabs.EasyOpc.UA.UAStatusCodeException: Status is not good: {BadNodeIdUnknown}. The node id refers to a node that does not exist in the server address space.
+ The node descriptor used was: NodeId="nsu=TOP%20Server ;ns=2;s=TESTPLC1.TESTPLC1.CarrierNumber".
+ The client method called (or event/callback invoked) was 'ReadMultiple'.

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