Professional OPC
Development Tools

logos

Online Forums

Technical support is provided through Support Forums below. Anybody can view them; you need to Register/Login to our site (see links in upper right corner) in order to Post questions. You do not have to be a licensed user of our product.

Please read Rules for forum posts before reporting your issue or asking a question. OPC Labs team is actively monitoring the forums, and replies as soon as possible. Various technical information can also be found in our Knowledge Base. For your convenience, we have also assembled a Frequently Asked Questions page.

Do not use the Contact page for technical issues.

× If you are developing in .NET, but are using the OPC-UA (OPC Unified Architecture), please post in the QuickOPC-UA category instead.

sdpdujc

More
31 Jan 2018 09:56 - 31 Jan 2018 09:56 #5928 by support
Replied by support on topic sdpdujc
You can pass the attribute ID as a parameter to one of the ReadValue (extension) methods.
' This example shows how to read a value of a specific attribute of a single node, and display it.
 
Imports OpcLabs.EasyOpc.UA
 
Namespace UADocExamples._EasyUAClient
    Partial Friend Class ReadValue
        Public Shared Sub Overload2()
            ' Define which server and node we will work with.
            Dim endpointDescriptor As UAEndpointDescriptor = _
                    "http://opcua.demo-this.com:51211/UA/SampleServer"  ' or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
            Dim nodeDescriptor As UANodeDescriptor = "nsu=http://test.org/UA/Data/;i=10853"
 
            ' Instantiate the client object.
            Dim easyUAClient = New EasyUAClient()
 
            ' Obtain value of a DataType attribute.
            Dim value As Object = easyUAClient.ReadValue(endpointDescriptor, nodeDescriptor, UAAttributeId.DataType)
 
            ' Display results
            Console.WriteLine("value type: {0}", value.GetType())
            Console.WriteLine("value: {0}", value)
        End Sub
    End Class
End Namespace
Best regards
Last edit: 31 Jan 2018 09:56 by support.
The following user(s) said Thank You: zarzar, BillieVen

Please Log in or Create an account to join the conversation.

More
31 Jan 2018 08:36 #5927 by zarzar
sdpdujc was created by zarzar
Hello,

how get DataType attribute for OPCUA NodeId in VB.NET?

Best regards, Robert



Attachments:
The following user(s) said Thank You: BillieVen

Please Log in or Create an account to join the conversation.

Moderators: support
Time to create page: 0.193 seconds