try {
    Add-Type -Path 'C:\Program Files (x86)\OPC Labs QuickOPC 2017.2\Assemblies\net452\OpcLabs.EasyOpcUA.dll'
}
catch
{}

if (Test-Path .\DataLogger.csv) {Remove-Item .\DataLogger.csv}

# DIM
$arrMonitoredItems = @()

# QuickUAClient
$clientConfig = New-Object OpcLabs.EasyOpc.UA.EasyUAClientConfiguration
$client = New-Object OpcLabs.EasyOpc.UA.EasyUAClient

#Server
$myEndPoint = 'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer'

#DataNodes
$nsuDataNodes = @(  
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1285',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1259',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1276',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1274',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1275',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1278',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1279',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1280',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1244',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1280',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1267',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=1288',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=29',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=11',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=20',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=18',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=19',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=24',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=22',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=23',
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=4'
                    'nsu=http://opcfoundation.org/UA/Boiler/;ns=4;i=15'
                  )

#EventHandling
$myEventHandlerConfig = Register-ObjectEvent -InputObject $clientConfig -EventName LogEntry -Action { $EventArgs >> .\ClientEventLog.log}
$myEventHandler = Register-ObjectEvent -InputObject $client -EventName DataChangeNotification -Action { $EventArgs.DisplayString >> .\DataLogger.csv}

#Prepare Subscription
foreach($DataNode in $nsuDataNodes) {
    $myVar = [OpcLabs.EasyOpc.UA.OperationModel.EasyUAMonitoredItemArguments]::new("", $myEndPoint, $DataNode)
    $myVar.SubscriptionParameters = 100
    $myVar.MonitoringParameters = 100
    $arrMonitoredItems += $myVar
}

#Subscription
$client.SubscribeMultipleMonitoredItems($arrMonitoredItems)