// This example shows how to obtain nodes under a given node of the OPC-UA address space. // For each node, it displays its browse name and node ID. // // Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . using System; using System.Diagnostics; using OpcLabs.EasyOpc.UA; using OpcLabs.EasyOpc.UA.AddressSpace; using OpcLabs.EasyOpc.UA.Navigation.Parsing; using OpcLabs.EasyOpc.UA.OperationModel; namespace UADocExamples._EasyUAClient { partial class Browse { public static void Main1() { UAEndpointDescriptor endpointDescriptor = "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"; // or "http://opcua.demo-this.com:51211/UA/SampleServer" (currently not supported) // or "https://opcua.demo-this.com:51212/UA/SampleServer/" var browsePathParser = new UABrowsePathParser("http://test.org/UA/Data/"); UANodeDescriptor nodeDescriptor = browsePathParser.Parse("[ObjectsFolder]/Data/Static/UserScalar"); // Instantiate the client object var client = new EasyUAClient(); // perform the operation UANodeElementCollection nodeElementCollection; try { nodeElementCollection = client.Browse( endpointDescriptor, nodeDescriptor, UABrowseParameters.AllForwardReferences); } catch (UAException uaException) { Console.WriteLine($"*** Failure: {uaException.GetBaseException().Message}"); return; } // Display results foreach (UANodeElement nodeElement in nodeElementCollection) { Debug.Assert(!(nodeElement is null)); Console.WriteLine($"{nodeElement.BrowseName}: {nodeElement.NodeId}"); } } // Example output: // //BooleanValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10384 //SByteValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10385 //ByteValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10386 //Int16Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10387 //UInt16Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10388 //Int32Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10389 //UInt32Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10390 //Int64Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10391 //UInt64Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10392 //FloatValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10393 //DoubleValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10394 //StringValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10395 //DateTimeValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10396 //GuidValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10397 //ByteStringValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10398 //XmlElementValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10399 //NodeIdValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10400 //ExpandedNodeIdValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10401 //QualifiedNameValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10402 //LocalizedTextValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10403 //StatusCodeValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10404 //VariantValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10405 //SimulationActive: nsu=http://test.org/UA/Data/ ;ns=2;i=10328 //GenerateValues: nsu=http://test.org/UA/Data/ ;ns=2;i=10329 //CycleComplete: nsu=http://test.org/UA/Data/ ;ns=2;i=10331 //UserScalarValueObjectType: nsu=http://test.org/UA/Data/ ;ns=2;i=9921 } }
# This example shows how to obtain nodes under a given node of the OPC-UA address space. # For each node, it displays its browse name and node ID. # # Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . #requires -Version 5.1 using namespace OpcLabs.EasyOpc.UA using namespace OpcLabs.EasyOpc.UA.Navigation.Parsing; using namespace OpcLabs.EasyOpc.UA.OperationModel # The path below assumes that the current directory is [ProductDir]/Examples-NET/PowerShell/Windows . Add-Type -Path "../../../Components/Opclabs.QuickOpc/net472/OpcLabs.EasyOpcUA.dll" Add-Type -Path "../../../Components/Opclabs.QuickOpc/net472/OpcLabs.EasyOpcUAComponents.dll" [UAEndpointDescriptor]$endpointDescriptor = "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer" # or "http://opcua.demo-this.com:51211/UA/SampleServer" (currently not supported) # or "https://opcua.demo-this.com:51212/UA/SampleServer/" $browsePathParser = New-Object UABrowsePathParser("http://test.org/UA/Data/") $nodeDescriptor = $browsePathParser.Parse("[ObjectsFolder]/Data/Static/UserScalar") # Instantiate the client object. $client = New-Object EasyUAClient # perform the operation try { $nodeElementCollection = [IEasyUAClientExtension]::Browse($client, $endpointDescriptor, $nodeDescriptor, [UABrowseParameters]::AllForwardReferences) } catch [UAException] { Write-Host "*** Failure: $($PSItem.Exception.GetBaseException().Message)" return } # Display results foreach ($nodeElement in $nodeElementCollection) { Write-Host "$($nodeElement.BrowseName): $($nodeElement.NodeId)" } # Example output: # #BooleanValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10384 #SByteValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10385 #ByteValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10386 #Int16Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10387 #UInt16Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10388 #Int32Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10389 #UInt32Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10390 #Int64Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10391 #UInt64Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10392 #FloatValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10393 #DoubleValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10394 #StringValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10395 #DateTimeValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10396 #GuidValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10397 #ByteStringValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10398 #XmlElementValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10399 #NodeIdValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10400 #ExpandedNodeIdValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10401 #QualifiedNameValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10402 #LocalizedTextValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10403 #StatusCodeValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10404 #VariantValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10405 #SimulationActive: nsu=http://test.org/UA/Data/ ;ns=2;i=10328 #GenerateValues: nsu=http://test.org/UA/Data/ ;ns=2;i=10329 #CycleComplete: nsu=http://test.org/UA/Data/ ;ns=2;i=10331 #UserScalarValueObjectType: nsu=http://test.org/UA/Data/ ;ns=2;i=9921
# This example shows how to obtain nodes under a given node of the OPC-UA address space. # For each node, it displays its browse name and node ID. # # Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . # OPC client and subscriber examples in Python on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-Python . # The QuickOPC package is needed. Install it using "pip install opclabs_quickopc". import opclabs_quickopc # Import .NET namespaces. from OpcLabs.EasyOpc.UA import * from OpcLabs.EasyOpc.UA.Navigation.Parsing import * from OpcLabs.EasyOpc.UA.OperationModel import * endpointDescriptor = UAEndpointDescriptor('opc.tcp://opcua.demo-this.com:51210/UA/SampleServer') # or 'http://opcua.demo-this.com:51211/UA/SampleServer' (currently not supported) # or 'https://opcua.demo-this.com:51212/UA/SampleServer/' browsePathParser = UABrowsePathParser('http://test.org/UA/Data/') nodeDescriptor = UANodeDescriptor(browsePathParser.Parse('[ObjectsFolder]/Data/Static/UserScalar')) # Instantiate the client object. client = EasyUAClient() # Perform the operation. try: nodeElements = IEasyUAClientExtension.Browse(client, endpointDescriptor, nodeDescriptor, UABrowseParameters.AllForwardReferences) except UAException as uaException: print('*** Failure: ' + uaException.GetBaseException().Message) exit() # Display results. for nodeElement in nodeElements: assert nodeElement is not None print(nodeElement.BrowseName, ': ', nodeElement.NodeId, sep='')
' This example shows how to obtain nodes under a given node of the OPC-UA address space. ' For each node, it displays its browse name and node ID. ' ' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . Imports OpcLabs.EasyOpc.UA Imports OpcLabs.EasyOpc.UA.AddressSpace Imports OpcLabs.EasyOpc.UA.Navigation.Parsing Imports OpcLabs.EasyOpc.UA.OperationModel Namespace _EasyUAClient Partial Friend Class Browse Public Shared Sub Main1() Dim endpointDescriptor As UAEndpointDescriptor = "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer" ' or "http://opcua.demo-this.com:51211/UA/SampleServer" (currently not supported) ' or "https://opcua.demo-this.com:51212/UA/SampleServer/" Dim browsePathParser As UABrowsePathParser = New UABrowsePathParser("http://test.org/UA/Data/") Dim nodeDescriptor As UANodeDescriptor = browsePathParser.Parse("[ObjectsFolder]/Data/Static/UserScalar") ' Instantiate the client object Dim client = New EasyUAClient() ' perform the operation Dim nodeElementCollection As UANodeElementCollection Try nodeElementCollection = client.Browse( endpointDescriptor, nodeDescriptor, UABrowseParameters.AllForwardReferences) Catch uaException As UAException Console.WriteLine($"*** Failure: {uaException.GetBaseException().Message}") Exit Sub End Try ' Display results For Each nodeElement As UANodeElement In nodeElementCollection Debug.Assert(nodeElement IsNot Nothing) Console.WriteLine($"{nodeElement.BrowseName}: {nodeElement.NodeId}") Next nodeElement End Sub ' Example output ' 'BooleanValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10384 'SByteValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10385 'ByteValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10386 'Int16Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10387 'UInt16Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10388 'Int32Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10389 'UInt32Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10390 'Int64Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10391 'UInt64Value: nsu=http://test.org/UA/Data/ ;ns=2;i=10392 'FloatValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10393 'DoubleValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10394 'StringValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10395 'DateTimeValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10396 'GuidValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10397 'ByteStringValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10398 'XmlElementValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10399 'NodeIdValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10400 'ExpandedNodeIdValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10401 'QualifiedNameValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10402 'LocalizedTextValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10403 'StatusCodeValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10404 'VariantValue: nsu=http://test.org/UA/Data/ ;ns=2;i=10405 'SimulationActive: nsu=http://test.org/UA/Data/ ;ns=2;i=10328 'GenerateValues: nsu=http://test.org/UA/Data/ ;ns=2;i=10329 'CycleComplete: nsu=http://test.org/UA/Data/ ;ns=2;i=10331 'UserScalarValueObjectType: nsu=http://test.org/UA/Data/ ;ns=2;i=9921 End Class End Namespace
// This example shows how to obtain nodes under a given node of the OPC-UA address space. // For each node, it displays its browse name and node ID. // // Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . #include "stdafx.h" // Includes "QuickOpc.h", and other commonly used files #include "Browse.h" namespace _EasyUAClient { void Browse::Main() { // Initialize the COM library CoInitializeEx(nullptr, COINIT_MULTITHREADED); { _UAEndpointDescriptorPtr EndpointDescriptorPtr(__uuidof(UAEndpointDescriptor)); EndpointDescriptorPtr->UrlString = //L"http://opcua.demo-this.com:51211/UA/SampleServer"; L"opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"; _UANodeDescriptorPtr NodeDescriptorPtr(__uuidof(UANodeDescriptor)); _UABrowsePathParserPtr BrowsePathParserPtr(__uuidof(UABrowsePathParser)); BrowsePathParserPtr->DefaultNamespaceUriString = L"http://test.org/UA/Data/"; NodeDescriptorPtr->BrowsePath = BrowsePathParserPtr->Parse(L"[ObjectsFolder]/Data/Static/UserScalar"); _UABrowseParametersPtr BrowseParametersPtr(__uuidof(UABrowseParameters)); BrowseParametersPtr->StandardName = L"AllForwardReferences"; // Instantiate the client object _EasyUAClientPtr ClientPtr(__uuidof(EasyUAClient)); // Perform the operation _UANodeElementCollectionPtr NodeElementsPtr = ClientPtr->Browse( static_cast<IDispatch*>(EndpointDescriptorPtr), static_cast<IDispatch*>(NodeDescriptorPtr), static_cast<IDispatch*>(BrowseParametersPtr)); // Display results IEnumVARIANTPtr EnumNodeElementPtr = NodeElementsPtr->GetEnumerator(); _variant_t vNodeElement; while (EnumNodeElementPtr->Next(1, &vNodeElement, nullptr) == S_OK) { const _UANodeElementPtr NodeElementPtr(vNodeElement); _tprintf(_T("%s: "), (LPCTSTR)CW2CT(NodeElementPtr->BrowseName->ToString)); _tprintf(_T("%s\n"), (LPCTSTR)CW2CT(NodeElementPtr->NodeId->ToString)); vNodeElement.Clear(); } } // Release all interface pointers BEFORE calling CoUninitialize() CoUninitialize(); } }
// This example shows how to obtain nodes under a given node of the OPC-UA // address space. For each node, it displays its browse name and node ID. // // Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . class procedure Browse.Main; var BrowseParameters: _UABrowseParameters; BrowsePathParser: _UABrowsePathParser; Client: EasyUAClient; Count: Cardinal; Element: OleVariant; EndpointDescriptor: _UAEndpointDescriptor; NodeDescriptor: _UANodeDescriptor; NodeElement: _UANodeElement; NodeElementEnumerator: IEnumVariant; NodeElements: _UANodeElementCollection; begin EndpointDescriptor := CoUAEndpointDescriptor.Create; EndpointDescriptor.UrlString := //'http://opcua.demo-this.com:51211/UA/SampleServer'; 'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer'; NodeDescriptor := CoUANodeDescriptor.Create; BrowsePathParser := CoUABrowsePathParser.Create; BrowsePathParser.DefaultNamespaceUriString := 'http://test.org/UA/Data/'; NodeDescriptor.BrowsePath := BrowsePathParser.Parse('[ObjectsFolder]/Data/Static/UserScalar'); BrowseParameters := CoUABrowseParameters.Create; BrowseParameters.StandardName := 'AllForwardReferences'; // Instantiate the client object Client := CoEasyUAClient.Create; NodeElements := Client.Browse( EndpointDescriptor, NodeDescriptor, BrowseParameters); NodeElementEnumerator := NodeElements.GetEnumerator; while (NodeElementEnumerator.Next(1, Element, Count) = S_OK) do begin NodeElement := IUnknown(Element) as _UANodeElement; WriteLn(NodeElement.BrowseName.ToString, ': ', NodeElement.NodeId.ToString); end; end;
// This example shows how to obtain nodes under a given node of the OPC-UA // address space. For each node, it displays its browse name and node ID. // // Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . class procedure Browse.Main; var BrowseParameters: _UABrowseParameters; BrowsePathParser: _UABrowsePathParser; Client: OpcLabs_EasyOpcUA_TLB._EasyUAClient; Count: Cardinal; Element: OleVariant; EndpointDescriptor: _UAEndpointDescriptor; NodeDescriptor: _UANodeDescriptor; NodeElement: _UANodeElement; NodeElementEnumerator: IEnumVariant; NodeElements: _UANodeElementCollection; begin EndpointDescriptor := CoUAEndpointDescriptor.Create; EndpointDescriptor.UrlString := //'http://opcua.demo-this.com:51211/UA/SampleServer'; //'https://opcua.demo-this.com:51212/UA/SampleServer/'; 'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer'; NodeDescriptor := CoUANodeDescriptor.Create; BrowsePathParser := CoUABrowsePathParser.Create; BrowsePathParser.DefaultNamespaceUriString := 'http://test.org/UA/Data/'; NodeDescriptor.BrowsePath := BrowsePathParser.Parse('[ObjectsFolder]/Data/Static/UserScalar'); BrowseParameters := CoUABrowseParameters.Create; BrowseParameters.StandardName := 'AllForwardReferences'; // Instantiate the client object Client := CoEasyUAClient.Create; try NodeElements := Client.Browse( EndpointDescriptor, NodeDescriptor, BrowseParameters); except on E: EOleException do begin WriteLn(Format('*** Failure: %s', [E.GetBaseException.Message])); Exit; end; end; NodeElementEnumerator := NodeElements.GetEnumerator; while (NodeElementEnumerator.Next(1, Element, Count) = S_OK) do begin NodeElement := IUnknown(Element) as _UANodeElement; WriteLn(NodeElement.BrowseName.ToString, ': ', NodeElement.NodeId.ToString); end; end;
// This example shows how to obtain nodes under a given node of the OPC-UA address space. // For each node, it displays its browse name and node ID. // // Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . $EndpointDescriptor = new COM("OpcLabs.EasyOpc.UA.UAEndpointDescriptor"); $EndpointDescriptor->UrlString = //"http://opcua.demo-this.com:51211/UA/SampleServer"; //"https://opcua.demo-this.com:51212/UA/SampleServer/"; "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"; $NodeDescriptor = new COM("OpcLabs.EasyOpc.UA.UANodeDescriptor"); $BrowsePathParser = new COM("OpcLabs.EasyOpc.UA.Navigation.Parsing.UABrowsePathParser"); $BrowsePathParser->DefaultNamespaceUriString = "http://test.org/UA/Data/"; $NodeDescriptor->BrowsePath = $BrowsePathParser->Parse("[ObjectsFolder]/Data/Static/UserScalar"); $BrowseParameters = new COM("OpcLabs.EasyOpc.UA.UABrowseParameters"); $BrowseParameters->StandardName = "AllForwardReferences"; // Instantiate the client object $Client = new COM("OpcLabs.EasyOpc.UA.EasyUAClient"); // Perform the operation try { $NodeElements = $Client->Browse($EndpointDescriptor, $NodeDescriptor, $BrowseParameters); } catch (com_exception $e) { printf("*** Failure: %s\n", $e->getMessage()); exit(); } // Display results foreach ($NodeElements as $NodeElement) { printf("s: s\n", $NodeElement->BrowseName, $NodeElement->NodeId); }
# This example shows how to obtain nodes under a given node of the OPC-UA address space. # For each node, it displays its browse name and node ID. # # The Python for Windows (pywin32) extensions package is needed. Install it using "pip install pypiwin32". # CAUTION: We now recommend using Python.NET package instead. Full set of examples with Python.NET is available! # # Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . import win32com.client from pywintypes import com_error endpointDescriptor = win32com.client.Dispatch('OpcLabs.EasyOpc.UA.UAEndpointDescriptor') #endpointDescriptor.UrlString = 'http://opcua.demo-this.com:51211/UA/SampleServer' endpointDescriptor.UrlString = 'opc.tcp://opcua.demo-this.com:51210/UA/SampleServer' nodeDescriptor = win32com.client.Dispatch('OpcLabs.EasyOpc.UA.UANodeDescriptor') browsePathParser = win32com.client.Dispatch('OpcLabs.EasyOpc.UA.Navigation.Parsing.UABrowsePathParser') browsePathParser.DefaultNamespaceUriString = 'http://test.org/UA/Data/' nodeDescriptor.BrowsePath = browsePathParser.Parse('[ObjectsFolder]/Data/Static/UserScalar') browseParameters = win32com.client.Dispatch('OpcLabs.EasyOpc.UA.UABrowseParameters') browseParameters.StandardName = 'AllForwardReferences' # Instantiate the client object client = win32com.client.Dispatch('OpcLabs.EasyOpc.UA.EasyUAClient') # Perform the operation try: nodeElements = client.Browse(endpointDescriptor, nodeDescriptor, browseParameters) except com_error as e: print('*** Failure: ' + e.args[2][1] + ': ' + e.args[2][2]) exit() # Display results for nodeElement in nodeElements: print(nodeElement.BrowseName, ': ', nodeElement.NodeId)
REM This example shows how to obtain nodes under a given node of the OPC-UA address space. REM For each node, it displays its browse name and node ID. REM REM Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . Public Sub Browse_Main_Command_Click() OutputText = "" Dim endpointDescriptor As New UAEndpointDescriptor endpointDescriptor.UrlString = "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer" Dim nodeDescriptor As New UANodeDescriptor Dim BrowsePathParser As New UABrowsePathParser BrowsePathParser.DefaultNamespaceUriString = "http://test.org/UA/Data/" Set nodeDescriptor.browsePath = BrowsePathParser.Parse("[ObjectsFolder]/Data/Static/UserScalar") Dim browseParameters As New UABrowseParameters browseParameters.StandardName = "AllForwardReferences" ' Instantiate the client object Dim Client As New EasyUAClient ' Perform the operation On Error Resume Next Dim NodeElements As UANodeElementCollection Set NodeElements = Client.Browse(endpointDescriptor, nodeDescriptor, browseParameters) If Err.Number <> 0 Then OutputText = OutputText & "*** Failure: " & Err.Source & ": " & Err.Description & vbCrLf Exit Sub End If On Error GoTo 0 ' Display results Dim NodeElement: For Each NodeElement In NodeElements OutputText = OutputText & NodeElement.BrowseName & ": " & NodeElement.NodeId & vbCrLf Next End Sub
Rem This example shows how to obtain nodes under a given node of the OPC-UA address space. Rem For each node, it displays its browse name and node ID. Rem Rem Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . Option Explicit Dim EndpointDescriptor: Set EndpointDescriptor = CreateObject("OpcLabs.EasyOpc.UA.UAEndpointDescriptor") EndpointDescriptor.UrlString = "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer" Dim NodeDescriptor: Set NodeDescriptor = CreateObject("OpcLabs.EasyOpc.UA.UANodeDescriptor") Dim BrowsePathParser: Set BrowsePathParser = CreateObject("OpcLabs.EasyOpc.UA.Navigation.Parsing.UABrowsePathParser") BrowsePathParser.DefaultNamespaceUriString = "http://test.org/UA/Data/" NodeDescriptor.BrowsePath = BrowsePathParser.Parse("[ObjectsFolder]/Data/Static/UserScalar") Dim BrowseParameters: Set BrowseParameters = CreateObject("OpcLabs.EasyOpc.UA.UABrowseParameters") BrowseParameters.StandardName = "AllForwardReferences" ' Instantiate the client object Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.UA.EasyUAClient") ' Perform the operation On Error Resume Next Dim NodeElements: Set NodeElements = Client.Browse(EndpointDescriptor, NodeDescriptor, BrowseParameters) If Err.Number <> 0 Then WScript.Echo "*** Failure: " & Err.Source & ": " & Err.Description WScript.Quit End If On Error Goto 0 ' Display results Dim NodeElement: For Each NodeElement In NodeElements WScript.Echo NodeElement.BrowseName & ": " & NodeElement.NodeId Next
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