Examples - Server OPC UA - Create data variables nested in other nodes

.NET

// This example shows how to create data variables nested in folders or other data variables.
// You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server. 
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
// OPC client, server and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-CSharp .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

using System;
using OpcLabs.EasyOpc.UA;
using OpcLabs.EasyOpc.UA.NodeSpace;

namespace UAServerDocExamples._UADataVariable
{
    class _Building
    {
        public static void Nested()
        {
            // Instantiate the server object.
            // By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
            var server = new EasyUAServer();

            // Create a data variable, and another data variable nested inside it.
            server.Add(new UADataVariable("Constant")
                {
                    new UADataVariable("NestedConstant").ConstantValue("abc")
                }.ConstantValue(42));

            // Create a folder, and a data variable nested inside it.
            server.Add(new UAFolder("Folder")
                {
                    new UADataVariable("ReadWrite").ReadWriteValue(0)  // read-write register
                });

            // Start the server.
            Console.WriteLine("The server is starting...");
            server.Start();

            Console.WriteLine("The server is started.");
            Console.WriteLine();

            // Let the user decide when to stop.
            Console.WriteLine("Press Enter to stop the server...");
            Console.ReadLine();

            // Stop the server.
            Console.WriteLine("The server is stopping...");
            server.Stop();

            Console.WriteLine("The server is stopped.");
        }
    }
}

# This example shows how to create data variables nested in folders or other data variables.
# You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server. 
#
# Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
# OPC client, server and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-CSharp .
# Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
# a commercial license in order to use Online Forums, and we reply to every post.

#requires -Version 5.1
using namespace OpcLabs.EasyOpc.UA
using namespace OpcLabs.EasyOpc.UA.NodeSpace

# The path below assumes that the current directory is [ProductDir]/Examples-NET/PowerShell/Windows .
Add-Type -Path "../../../Components/Opclabs.QuickOpc/net472/OpcLabs.ServerOpcUAComponents.dll"

# Instantiate the server object.
# By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
$server = New-Object EasyUAServer

# Create a data variable, and another data variable nested inside it.
$dataVariable = [UADataVariableExtension]::ConstantValue((New-Object UADataVariable("Constant")), 42)
$dataVariable.Add([UADataVariableExtension]::ConstantValue((New-Object UADataVariable("NestedConstant")), "abc"))
$server.Add($dataVariable) 

# Create a folder, and a data variable nested inside it.
$folder = New-Object UAFolder("Folder")
$folder.Add([UADataVariableExtension]::ReadWriteValue((New-Object UADataVariable("ReadWrite")), 0))
$server.Add($folder) 

# Start the server.
Write-Host "The server is starting..."
$server.Start()

Write-Host "The server is started."
Write-Host

# Let the user decide when to stop.
Write-Host "Press Enter to stop the server..."
Read-Host

# Stop the server.
Write-Host "The server is stopping..."
$server.Stop()

Write-Host "The server is stopped."

' This example shows how to create data variables nested in folders or other data variables.
' You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server. 
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
' OPC client and subscriber examples in VB.NET on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-VBNET .
' Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
' a commercial license in order to use Online Forums, and we reply to every post.

Imports System
Imports OpcLabs.EasyOpc.UA
Imports OpcLabs.EasyOpc.UA.NodeSpace

Namespace Global.UAServerDocExamples._UADataVariable
    Partial Friend Class _Building
        Shared Sub Nested()
            ' Instantiate the server object.
            ' By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
            Dim server = New EasyUAServer()

            ' Create a data variable, and another data variable nested inside it.
            server.Add(New UADataVariable("Constant") From
                {
                    New UADataVariable("NestedConstant").ConstantValue("abc")
                }.ConstantValue(42))

            ' Create a folder, and a data variable nested inside it.
            server.Add(New UAFolder("Folder") From
                {
                    New UADataVariable("ReadWrite").ReadWriteValue(0) ' read - Write() register
                })

            ' Start the server.
            Console.WriteLine("The server is starting...")
            server.Start()

            Console.WriteLine("The server is started.")
            Console.WriteLine()

            ' Let the user decide when to stop.
            Console.WriteLine("Press Enter to stop the server...")
            Console.ReadLine()

            ' Stop the server.
            Console.WriteLine("The server is stopping...")
            server.Stop()

            Console.WriteLine("The server is stopped.")
        End Sub
    End Class
End Namespace

Fundamentals

OPC Wizard Node Objects