// This example shows how to obtain all leaves under the "Simulation" branch of the address space. For each leaf, it displays // the ItemID of the node. // // Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . // OPC client and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-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.DataAccess; using OpcLabs.EasyOpc.DataAccess.AddressSpace; using OpcLabs.EasyOpc.OperationModel; namespace DocExamples.DataAccess._EasyDAClient { class BrowseLeaves { public static void Main1() { // Instantiate the client object. var client = new EasyDAClient(); DANodeElementCollection leafElements; try { leafElements = client.BrowseLeaves("", "OPCLabs.KitServer.2", "Simulation"); } catch (OpcException opcException) { Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message); return; } foreach (DANodeElement leafElement in leafElements) Console.WriteLine($"LeafElements(\"{leafElement.Name}\").ItemId: {leafElement.ItemId}"); } // Example output: // //LeafElements("Register_ArrayOfI2").ItemId: Simulation.Register_ArrayOfI2 //LeafElements("Register_ArrayOfI4").ItemId: Simulation.Register_ArrayOfI4 //LeafElements("Staircase 0:2 (10 s)").ItemId: Simulation.Staircase 0:2 (10 s) //LeafElements("Constant_VARIANT").ItemId: Simulation.Constant_VARIANT //LeafElements("Staircase 0:10 (1 s)").ItemId: Simulation.Staircase 0:10 (1 s) //LeafElements("Register_DATE").ItemId: Simulation.Register_DATE //LeafElements("Constant_RECORD").ItemId: Simulation.Constant_RECORD //LeafElements("ReadValue_DECIMAL").ItemId: Simulation.ReadValue_DECIMAL //LeafElements("Ramp 0:360 (1 s)").ItemId: Simulation.Ramp 0:360 (1 s) //LeafElements("Constant_NULL").ItemId: Simulation.Constant_NULL //LeafElements("ReadValue_ArrayOfUI2").ItemId: Simulation.ReadValue_ArrayOfUI2 //LeafElements("ReadValue_ArrayOfUI1").ItemId: Simulation.ReadValue_ArrayOfUI1 //LeafElements("ReadValue_ArrayOfUI4").ItemId: Simulation.ReadValue_ArrayOfUI4 //LeafElements("Constant_CY").ItemId: Simulation.Constant_CY //LeafElements("Staircase 0:2 (1 min)").ItemId: Simulation.Staircase 0:2 (1 min) //LeafElements("Staircase 0:2 (10 min)").ItemId: Simulation.Staircase 0:2 (10 min) //LeafElements("Square (10 s)").ItemId: Simulation.Square(10 s) //LeafElements("Register_ArrayOfBSTR").ItemId: Simulation.Register_ArrayOfBSTR //LeafElements("ReadValue_I2").ItemId: Simulation.ReadValue_I2 //LeafElements("ReadValue_I1").ItemId: Simulation.ReadValue_I1 //LeafElements("ReadValue_I4").ItemId: Simulation.ReadValue_I4 //LeafElements("Ramp (1 s)").ItemId: Simulation.Ramp(1 s) //LeafElements("ReadValue_ArrayOfDATE").ItemId: Simulation.ReadValue_ArrayOfDATE //LeafElements("OnOff (1 s)").ItemId: Simulation.OnOff(1 s) //LeafElements("AlternatingQuality Uncertain (1 s)").ItemId: Simulation.AlternatingQuality Uncertain(1 s) //LeafElements("Register_NULL").ItemId: Simulation.Register_NULL //LeafElements("Random (1 min)").ItemId: Simulation.Random(1 min) //LeafElements("Random (10 min)").ItemId: Simulation.Random(10 min) //LeafElements("AlternatingError (10 s)").ItemId: Simulation.AlternatingError(10 s) //LeafElements("ReadValue_ArrayOfI1").ItemId: Simulation.ReadValue_ArrayOfI1 //LeafElements("ReadValue_ArrayOfI2").ItemId: Simulation.ReadValue_ArrayOfI2 //LeafElements("ReadValue_UI2").ItemId: Simulation.ReadValue_UI2 //LeafElements("ReadValue_ArrayOfI4").ItemId: Simulation.ReadValue_ArrayOfI4 //LeafElements("ReadValue_UI1").ItemId: Simulation.ReadValue_UI1 //LeafElements("ReadValue_UI4").ItemId: Simulation.ReadValue_UI4 //LeafElements("Weekdays (1 s)").ItemId: Simulation.Weekdays(1 s) //LeafElements("AlternatingQuality Uncertain (1 min)").ItemId: Simulation.AlternatingQuality Uncertain(1 min) //LeafElements("AlternatingQuality Uncertain (10 min)").ItemId: Simulation.AlternatingQuality Uncertain(10 min) //LeafElements("Weekdays (1 min)").ItemId: Simulation.Weekdays(1 min) //LeafElements("Weekdays (10 min)").ItemId: Simulation.Weekdays(10 min) //LeafElements("OnOff (10 s)").ItemId: Simulation.OnOff(10 s) //LeafElements("ReadWriteCount").ItemId: Simulation.ReadWriteCount //LeafElements("Register_UNKNOWN").ItemId: Simulation.Register_UNKNOWN //LeafElements("AlternatingQuality Uncertain (10 s)").ItemId: Simulation.AlternatingQuality Uncertain(10 s) //LeafElements("Constant_BSTR").ItemId: Simulation.Constant_BSTR //LeafElements("Constant_ERROR").ItemId: Simulation.Constant_ERROR //LeafElements("Constant_UI2").ItemId: Simulation.Constant_UI2 //LeafElements("Constant_UI1").ItemId: Simulation.Constant_UI1 //LeafElements("Constant_UI4").ItemId: Simulation.Constant_UI4 //LeafElements("Constant_R4").ItemId: Simulation.Constant_R4 //LeafElements("Constant_R8").ItemId: Simulation.Constant_R8 //LeafElements("ReadValue_ArrayOfBSTR").ItemId: Simulation.ReadValue_ArrayOfBSTR //LeafElements("Register_ArrayOfR4").ItemId: Simulation.Register_ArrayOfR4 //LeafElements("Register_ArrayOfR8").ItemId: Simulation.Register_ArrayOfR8 //LeafElements("Ramp 0:360 (1 min)").ItemId: Simulation.Ramp 0:360 (1 min) //LeafElements("Ramp 0:360 (10 min)").ItemId: Simulation.Ramp 0:360 (10 min) //LeafElements("RegisterSet_n").ItemId: //LeafElements("Register_ArrayOfUI4").ItemId: Simulation.Register_ArrayOfUI4 //LeafElements("Register_ArrayOfUI1").ItemId: Simulation.Register_ArrayOfUI1 //LeafElements("Register_ArrayOfUI2").ItemId: Simulation.Register_ArrayOfUI2 //LeafElements("Register").ItemId: Simulation.Register //LeafElements("Constant_EMPTY").ItemId: Simulation.Constant_EMPTY //LeafElements("Register_RECORD").ItemId: Simulation.Register_RECORD //LeafElements("ReadValue_ArrayOfBOOL").ItemId: Simulation.ReadValue_ArrayOfBOOL //LeafElements("AlternatingError (1 min)").ItemId: Simulation.AlternatingError(1 min) //LeafElements("AlternatingError (10 min)").ItemId: Simulation.AlternatingError(10 min) //LeafElements("OnOff (1 min)").ItemId: Simulation.OnOff(1 min) //LeafElements("ReadValue_DATE").ItemId: Simulation.ReadValue_DATE //LeafElements("Register_ERROR").ItemId: Simulation.Register_ERROR //LeafElements("ReadValue_ArrayOfUINT").ItemId: Simulation.ReadValue_ArrayOfUINT //LeafElements("Incrementing (10 s)").ItemId: Simulation.Incrementing(10 s) //LeafElements("ReadValue_ArrayOfINT").ItemId: Simulation.ReadValue_ArrayOfINT //LeafElements("ReadValue_BOOL").ItemId: Simulation.ReadValue_BOOL //LeafElements("Register_ArrayOfCY").ItemId: Simulation.Register_ArrayOfCY //LeafElements("Incrementing (1 s)").ItemId: Simulation.Incrementing(1 s) //LeafElements("Constant_UINT").ItemId: Simulation.Constant_UINT //LeafElements("ReadValue_ArrayOfR4").ItemId: Simulation.ReadValue_ArrayOfR4 //LeafElements("ReadValue_ArrayOfR8").ItemId: Simulation.ReadValue_ArrayOfR8 //LeafElements("Constant_I4").ItemId: Simulation.Constant_I4 //LeafElements("Constant_I2").ItemId: Simulation.Constant_I2 //LeafElements("Constant_I1").ItemId: Simulation.Constant_I1 //LeafElements("Register_BOOL").ItemId: Simulation.Register_BOOL //LeafElements("Constant_UNKNOWN").ItemId: Simulation.Constant_UNKNOWN //LeafElements("Ramp 0:100 (1 s)").ItemId: Simulation.Ramp 0:100 (1 s) //LeafElements("Register_UI4").ItemId: Simulation.Register_UI4 //LeafElements("Register_UI2").ItemId: Simulation.Register_UI2 //LeafElements("Register_UI1").ItemId: Simulation.Register_UI1 //LeafElements("AlternatingError (1 s)").ItemId: Simulation.AlternatingError(1 s) //LeafElements("Sine (10 s)").ItemId: Simulation.Sine(10 s) //LeafElements("Constant_BOOL").ItemId: Simulation.Constant_BOOL //LeafElements("Sine -100:100 (10 s)").ItemId: Simulation.Sine -100:100 (10 s) //LeafElements("Register_UINT").ItemId: Simulation.Register_UINT //LeafElements("Constant").ItemId: Simulation.Constant //LeafElements("Sine (1 s)").ItemId: Simulation.Sine(1 s) //LeafElements("Register_I1").ItemId: Simulation.Register_I1 //LeafElements("Register_I2").ItemId: Simulation.Register_I2 //LeafElements("Register_I4").ItemId: Simulation.Register_I4 //LeafElements("ReadValue_ArrayOfCY").ItemId: Simulation.ReadValue_ArrayOfCY //LeafElements("Register_ArrayOfUINT").ItemId: Simulation.Register_ArrayOfUINT //LeafElements("Incrementing (1 min)").ItemId: Simulation.Incrementing(1 min) //LeafElements("Weekdays (10 s)").ItemId: Simulation.Weekdays(10 s) //LeafElements("Square (1 s)").ItemId: Simulation.Square(1 s) //LeafElements("Sine (1 min)").ItemId: Simulation.Sine(1 min) //LeafElements("Sine (10 min)").ItemId: Simulation.Sine(10 min) //LeafElements("Constant_DISPATCH").ItemId: Simulation.Constant_DISPATCH //LeafElements("Ramp 0:100 (1 min)").ItemId: Simulation.Ramp 0:100 (1 min) //LeafElements("Ramp 0:100 (10 min)").ItemId: Simulation.Ramp 0:100 (10 min) //LeafElements("Random (1 s)").ItemId: Simulation.Random(1 s) //LeafElements("Staircase 0:10 (1 min)").ItemId: Simulation.Staircase 0:10 (1 min) //LeafElements("Staircase 0:10 (10 min)").ItemId: Simulation.Staircase 0:10 (10 min) //LeafElements("AlternatingQuality Bad (1 s)").ItemId: Simulation.AlternatingQuality Bad(1 s) //LeafElements("Sine -100:100 (1 s)").ItemId: Simulation.Sine -100:100 (1 s) //LeafElements("Register_ArrayOfDATE").ItemId: Simulation.Register_ArrayOfDATE //LeafElements("AlternatingQuality Bad (10 s)").ItemId: Simulation.AlternatingQuality Bad(10 s) //LeafElements("ReadValue_R4").ItemId: Simulation.ReadValue_R4 //LeafElements("ReadValue_R8").ItemId: Simulation.ReadValue_R8 //LeafElements("Ramp (1 min)").ItemId: Simulation.Ramp(1 min) //LeafElements("Ramp (10 min)").ItemId: Simulation.Ramp(10 min) //LeafElements("Register_DISPATCH").ItemId: Simulation.Register_DISPATCH //LeafElements("OnOff (10 min)").ItemId: Simulation.OnOff(10 min) //LeafElements("ReadValue_BSTR").ItemId: Simulation.ReadValue_BSTR //LeafElements("Staircase 0:10 (10 s)").ItemId: Simulation.Staircase 0:10 (10 s) //LeafElements("Random (10 s)").ItemId: Simulation.Random(10 s) //LeafElements("Incrementing").ItemId: Simulation.Incrementing //LeafElements("Register_BSTR").ItemId: Simulation.Register_BSTR //LeafElements("ReadValue_UINT").ItemId: Simulation.ReadValue_UINT //LeafElements("Register_CY").ItemId: Simulation.Register_CY //LeafElements("AlternatingQuality Bad (1 min)").ItemId: Simulation.AlternatingQuality Bad(1 min) //LeafElements("AlternatingQuality Bad (10 min)").ItemId: Simulation.AlternatingQuality Bad(10 min) //LeafElements("Random").ItemId: Simulation.Random //LeafElements("Sine -100:100 (1 min)").ItemId: Simulation.Sine -100:100 (1 min) //LeafElements("Sine -100:100 (10 min)").ItemId: Simulation.Sine -100:100 (10 min) //LeafElements("Ramp (10 s)").ItemId: Simulation.Ramp(10 s) //LeafElements("ReadValue_INT").ItemId: Simulation.ReadValue_INT //LeafElements("Staircase 0:2 (1 s)").ItemId: Simulation.Staircase 0:2 (1 s) //LeafElements("ReadValue_CY").ItemId: Simulation.ReadValue_CY //LeafElements("Register_R8").ItemId: Simulation.Register_R8 //LeafElements("Register_R4").ItemId: Simulation.Register_R4 //LeafElements("Register_DECIMAL").ItemId: Simulation.Register_DECIMAL //LeafElements("Incrementing (10 min)").ItemId: Simulation.Incrementing(10 min) //LeafElements("Register_EMPTY").ItemId: Simulation.Register_EMPTY //LeafElements("Constant_INT").ItemId: Simulation.Constant_INT //LeafElements("Register_INT").ItemId: Simulation.Register_INT //LeafElements("Register_ArrayOfBOOL").ItemId: Simulation.Register_ArrayOfBOOL //LeafElements("Ramp 0:100 (10 s)").ItemId: Simulation.Ramp 0:100 (10 s) //LeafElements("Ramp 0:360 (10 s)").ItemId: Simulation.Ramp 0:360 (10 s) //LeafElements("Square (1 min)").ItemId: Simulation.Square(1 min) //LeafElements("Square (10 min)").ItemId: Simulation.Square(10 min) //LeafElements("Constant_DECIMAL").ItemId: Simulation.Constant_DECIMAL //LeafElements("Register_VARIANT").ItemId: Simulation.Register_VARIANT //LeafElements("Constant_DATE").ItemId: Simulation.Constant_DATE //LeafElements("Register_ArrayOfINT").ItemId: Simulation.Register_ArrayOfINT } }
' This example shows how to obtain all leaves under the "Simulation" branch of the address space. For each leaf, it displays ' the ItemID of the node. ' ' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . ' OPC client and subscriber examples in VB.NET on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-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 OpcLabs.EasyOpc.DataAccess Imports OpcLabs.EasyOpc.DataAccess.AddressSpace Imports OpcLabs.EasyOpc.OperationModel Namespace DataAccess._EasyDAClient Partial Friend Class BrowseLeaves Shared Sub Main1() Dim client = New EasyDAClient() Dim leafElements As DANodeElementCollection Try leafElements = client.BrowseLeaves("", "OPCLabs.KitServer.2", "Simulation") Catch opcException As OpcException Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message) Exit Sub End Try For Each leafElement In leafElements Console.WriteLine($"LeafElements(""{leafElement.Name}"").ItemId: {leafElement.ItemId}") Next leafElement End Sub ' Example output ' 'LeafElements("Register_ArrayOfI2").ItemId: Simulation.Register_ArrayOfI2 'LeafElements("Register_ArrayOfI4").ItemId: Simulation.Register_ArrayOfI4 'LeafElements("Staircase 0:2 (10 s)").ItemId: Simulation.Staircase 0:2 (10 s) 'LeafElements("Constant_VARIANT").ItemId: Simulation.Constant_VARIANT 'LeafElements("Staircase 0:10 (1 s)").ItemId: Simulation.Staircase 0:10 (1 s) 'LeafElements("Register_DATE").ItemId: Simulation.Register_DATE 'LeafElements("Constant_RECORD").ItemId: Simulation.Constant_RECORD 'LeafElements("ReadValue_DECIMAL").ItemId: Simulation.ReadValue_DECIMAL 'LeafElements("Ramp 0:360 (1 s)").ItemId: Simulation.Ramp 0:360 (1 s) 'LeafElements("Constant_NULL").ItemId: Simulation.Constant_NULL 'LeafElements("ReadValue_ArrayOfUI2").ItemId: Simulation.ReadValue_ArrayOfUI2 'LeafElements("ReadValue_ArrayOfUI1").ItemId: Simulation.ReadValue_ArrayOfUI1 'LeafElements("ReadValue_ArrayOfUI4").ItemId: Simulation.ReadValue_ArrayOfUI4 'LeafElements("Constant_CY").ItemId: Simulation.Constant_CY 'LeafElements("Staircase 0:2 (1 min)").ItemId: Simulation.Staircase 0:2 (1 min) 'LeafElements("Staircase 0:2 (10 min)").ItemId: Simulation.Staircase 0:2 (10 min) 'LeafElements("Square (10 s)").ItemId: Simulation.Square(10 s) 'LeafElements("Register_ArrayOfBSTR").ItemId: Simulation.Register_ArrayOfBSTR 'LeafElements("ReadValue_I2").ItemId: Simulation.ReadValue_I2 'LeafElements("ReadValue_I1").ItemId: Simulation.ReadValue_I1 'LeafElements("ReadValue_I4").ItemId: Simulation.ReadValue_I4 'LeafElements("Ramp (1 s)").ItemId: Simulation.Ramp(1 s) 'LeafElements("ReadValue_ArrayOfDATE").ItemId: Simulation.ReadValue_ArrayOfDATE 'LeafElements("OnOff (1 s)").ItemId: Simulation.OnOff(1 s) 'LeafElements("AlternatingQuality Uncertain (1 s)").ItemId: Simulation.AlternatingQuality Uncertain(1 s) 'LeafElements("Register_NULL").ItemId: Simulation.Register_NULL 'LeafElements("Random (1 min)").ItemId: Simulation.Random(1 min) 'LeafElements("Random (10 min)").ItemId: Simulation.Random(10 min) 'LeafElements("AlternatingError (10 s)").ItemId: Simulation.AlternatingError(10 s) 'LeafElements("ReadValue_ArrayOfI1").ItemId: Simulation.ReadValue_ArrayOfI1 'LeafElements("ReadValue_ArrayOfI2").ItemId: Simulation.ReadValue_ArrayOfI2 'LeafElements("ReadValue_UI2").ItemId: Simulation.ReadValue_UI2 'LeafElements("ReadValue_ArrayOfI4").ItemId: Simulation.ReadValue_ArrayOfI4 'LeafElements("ReadValue_UI1").ItemId: Simulation.ReadValue_UI1 'LeafElements("ReadValue_UI4").ItemId: Simulation.ReadValue_UI4 'LeafElements("Weekdays (1 s)").ItemId: Simulation.Weekdays(1 s) 'LeafElements("AlternatingQuality Uncertain (1 min)").ItemId: Simulation.AlternatingQuality Uncertain(1 min) 'LeafElements("AlternatingQuality Uncertain (10 min)").ItemId: Simulation.AlternatingQuality Uncertain(10 min) 'LeafElements("Weekdays (1 min)").ItemId: Simulation.Weekdays(1 min) 'LeafElements("Weekdays (10 min)").ItemId: Simulation.Weekdays(10 min) 'LeafElements("OnOff (10 s)").ItemId: Simulation.OnOff(10 s) 'LeafElements("ReadWriteCount").ItemId: Simulation.ReadWriteCount 'LeafElements("Register_UNKNOWN").ItemId: Simulation.Register_UNKNOWN 'LeafElements("AlternatingQuality Uncertain (10 s)").ItemId: Simulation.AlternatingQuality Uncertain(10 s) 'LeafElements("Constant_BSTR").ItemId: Simulation.Constant_BSTR 'LeafElements("Constant_ERROR").ItemId: Simulation.Constant_ERROR 'LeafElements("Constant_UI2").ItemId: Simulation.Constant_UI2 'LeafElements("Constant_UI1").ItemId: Simulation.Constant_UI1 'LeafElements("Constant_UI4").ItemId: Simulation.Constant_UI4 'LeafElements("Constant_R4").ItemId: Simulation.Constant_R4 'LeafElements("Constant_R8").ItemId: Simulation.Constant_R8 'LeafElements("ReadValue_ArrayOfBSTR").ItemId: Simulation.ReadValue_ArrayOfBSTR 'LeafElements("Register_ArrayOfR4").ItemId: Simulation.Register_ArrayOfR4 'LeafElements("Register_ArrayOfR8").ItemId: Simulation.Register_ArrayOfR8 'LeafElements("Ramp 0:360 (1 min)").ItemId: Simulation.Ramp 0:360 (1 min) 'LeafElements("Ramp 0:360 (10 min)").ItemId: Simulation.Ramp 0:360 (10 min) 'LeafElements("RegisterSet_n").ItemId: 'LeafElements("Register_ArrayOfUI4").ItemId Simulation.Register_ArrayOfUI4 'LeafElements("Register_ArrayOfUI1").ItemId: Simulation.Register_ArrayOfUI1 'LeafElements("Register_ArrayOfUI2").ItemId: Simulation.Register_ArrayOfUI2 'LeafElements("Register").ItemId: Simulation.Register 'LeafElements("Constant_EMPTY").ItemId: Simulation.Constant_EMPTY 'LeafElements("Register_RECORD").ItemId: Simulation.Register_RECORD 'LeafElements("ReadValue_ArrayOfBOOL").ItemId: Simulation.ReadValue_ArrayOfBOOL 'LeafElements("AlternatingError (1 min)").ItemId: Simulation.AlternatingError(1 min) 'LeafElements("AlternatingError (10 min)").ItemId: Simulation.AlternatingError(10 min) 'LeafElements("OnOff (1 min)").ItemId: Simulation.OnOff(1 min) 'LeafElements("ReadValue_DATE").ItemId: Simulation.ReadValue_DATE 'LeafElements("Register_ERROR").ItemId: Simulation.Register_ERROR 'LeafElements("ReadValue_ArrayOfUINT").ItemId: Simulation.ReadValue_ArrayOfUINT 'LeafElements("Incrementing (10 s)").ItemId: Simulation.Incrementing(10 s) 'LeafElements("ReadValue_ArrayOfINT").ItemId: Simulation.ReadValue_ArrayOfINT 'LeafElements("ReadValue_BOOL").ItemId: Simulation.ReadValue_BOOL 'LeafElements("Register_ArrayOfCY").ItemId: Simulation.Register_ArrayOfCY 'LeafElements("Incrementing (1 s)").ItemId: Simulation.Incrementing(1 s) 'LeafElements("Constant_UINT").ItemId: Simulation.Constant_UINT 'LeafElements("ReadValue_ArrayOfR4").ItemId: Simulation.ReadValue_ArrayOfR4 'LeafElements("ReadValue_ArrayOfR8").ItemId: Simulation.ReadValue_ArrayOfR8 'LeafElements("Constant_I4").ItemId: Simulation.Constant_I4 'LeafElements("Constant_I2").ItemId: Simulation.Constant_I2 'LeafElements("Constant_I1").ItemId: Simulation.Constant_I1 'LeafElements("Register_BOOL").ItemId: Simulation.Register_BOOL 'LeafElements("Constant_UNKNOWN").ItemId: Simulation.Constant_UNKNOWN 'LeafElements("Ramp 0:100 (1 s)").ItemId: Simulation.Ramp 0:100 (1 s) 'LeafElements("Register_UI4").ItemId: Simulation.Register_UI4 'LeafElements("Register_UI2").ItemId: Simulation.Register_UI2 'LeafElements("Register_UI1").ItemId: Simulation.Register_UI1 'LeafElements("AlternatingError (1 s)").ItemId: Simulation.AlternatingError(1 s) 'LeafElements("Sine (10 s)").ItemId: Simulation.Sine(10 s) 'LeafElements("Constant_BOOL").ItemId: Simulation.Constant_BOOL 'LeafElements("Sine -100:100 (10 s)").ItemId: Simulation.Sine -100:100 (10 s) 'LeafElements("Register_UINT").ItemId: Simulation.Register_UINT 'LeafElements("Constant").ItemId: Simulation.Constant 'LeafElements("Sine (1 s)").ItemId: Simulation.Sine(1 s) 'LeafElements("Register_I1").ItemId: Simulation.Register_I1 'LeafElements("Register_I2").ItemId: Simulation.Register_I2 'LeafElements("Register_I4").ItemId: Simulation.Register_I4 'LeafElements("ReadValue_ArrayOfCY").ItemId: Simulation.ReadValue_ArrayOfCY 'LeafElements("Register_ArrayOfUINT").ItemId: Simulation.Register_ArrayOfUINT 'LeafElements("Incrementing (1 min)").ItemId: Simulation.Incrementing(1 min) 'LeafElements("Weekdays (10 s)").ItemId: Simulation.Weekdays(10 s) 'LeafElements("Square (1 s)").ItemId: Simulation.Square(1 s) 'LeafElements("Sine (1 min)").ItemId: Simulation.Sine(1 min) 'LeafElements("Sine (10 min)").ItemId: Simulation.Sine(10 min) 'LeafElements("Constant_DISPATCH").ItemId: Simulation.Constant_DISPATCH 'LeafElements("Ramp 0:100 (1 min)").ItemId: Simulation.Ramp 0:100 (1 min) 'LeafElements("Ramp 0:100 (10 min)").ItemId: Simulation.Ramp 0:100 (10 min) 'LeafElements("Random (1 s)").ItemId: Simulation.Random(1 s) 'LeafElements("Staircase 0:10 (1 min)").ItemId: Simulation.Staircase 0:10 (1 min) 'LeafElements("Staircase 0:10 (10 min)").ItemId: Simulation.Staircase 0:10 (10 min) 'LeafElements("AlternatingQuality Bad (1 s)").ItemId: Simulation.AlternatingQuality Bad(1 s) 'LeafElements("Sine -100:100 (1 s)").ItemId: Simulation.Sine -100:100 (1 s) 'LeafElements("Register_ArrayOfDATE").ItemId: Simulation.Register_ArrayOfDATE 'LeafElements("AlternatingQuality Bad (10 s)").ItemId: Simulation.AlternatingQuality Bad(10 s) 'LeafElements("ReadValue_R4").ItemId: Simulation.ReadValue_R4 'LeafElements("ReadValue_R8").ItemId: Simulation.ReadValue_R8 'LeafElements("Ramp (1 min)").ItemId: Simulation.Ramp(1 min) 'LeafElements("Ramp (10 min)").ItemId: Simulation.Ramp(10 min) 'LeafElements("Register_DISPATCH").ItemId: Simulation.Register_DISPATCH 'LeafElements("OnOff (10 min)").ItemId: Simulation.OnOff(10 min) 'LeafElements("ReadValue_BSTR").ItemId: Simulation.ReadValue_BSTR 'LeafElements("Staircase 0:10 (10 s)").ItemId: Simulation.Staircase 0:10 (10 s) 'LeafElements("Random (10 s)").ItemId: Simulation.Random(10 s) 'LeafElements("Incrementing").ItemId: Simulation.Incrementing 'LeafElements("Register_BSTR").ItemId: Simulation.Register_BSTR 'LeafElements("ReadValue_UINT").ItemId: Simulation.ReadValue_UINT 'LeafElements("Register_CY").ItemId: Simulation.Register_CY 'LeafElements("AlternatingQuality Bad (1 min)").ItemId: Simulation.AlternatingQuality Bad(1 min) 'LeafElements("AlternatingQuality Bad (10 min)").ItemId: Simulation.AlternatingQuality Bad(10 min) 'LeafElements("Random").ItemId: Simulation.Random 'LeafElements("Sine -100:100 (1 min)").ItemId: Simulation.Sine -100:100 (1 min) 'LeafElements("Sine -100:100 (10 min)").ItemId: Simulation.Sine -100:100 (10 min) 'LeafElements("Ramp (10 s)").ItemId: Simulation.Ramp(10 s) 'LeafElements("ReadValue_INT").ItemId: Simulation.ReadValue_INT 'LeafElements("Staircase 0:2 (1 s)").ItemId: Simulation.Staircase 0:2 (1 s) 'LeafElements("ReadValue_CY").ItemId: Simulation.ReadValue_CY 'LeafElements("Register_R8").ItemId: Simulation.Register_R8 'LeafElements("Register_R4").ItemId: Simulation.Register_R4 'LeafElements("Register_DECIMAL").ItemId: Simulation.Register_DECIMAL 'LeafElements("Incrementing (10 min)").ItemId: Simulation.Incrementing(10 min) 'LeafElements("Register_EMPTY").ItemId: Simulation.Register_EMPTY 'LeafElements("Constant_INT").ItemId: Simulation.Constant_INT 'LeafElements("Register_INT").ItemId: Simulation.Register_INT 'LeafElements("Register_ArrayOfBOOL").ItemId: Simulation.Register_ArrayOfBOOL 'LeafElements("Ramp 0:100 (10 s)").ItemId: Simulation.Ramp 0:100 (10 s) 'LeafElements("Ramp 0:360 (10 s)").ItemId: Simulation.Ramp 0:360 (10 s) 'LeafElements("Square (1 min)").ItemId: Simulation.Square(1 min) 'LeafElements("Square (10 min)").ItemId: Simulation.Square(10 min) 'LeafElements("Constant_DECIMAL").ItemId: Simulation.Constant_DECIMAL 'LeafElements("Register_VARIANT").ItemId: Simulation.Register_VARIANT 'LeafElements("Constant_DATE").ItemId: Simulation.Constant_DATE 'LeafElements("Register_ArrayOfINT").ItemId: Simulation.Register_ArrayOfINT End Class End Namespace
Rem This example shows how to obtain all leaves under the "Simulation" branch of the address space. For each leaf, it displays Rem the ItemID of the node. Rem Rem Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . Rem OPC client and subscriber examples in VBScript on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VBScript . Rem Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own Rem a commercial license in order to use Online Forums, and we reply to every post. Option Explicit Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.DataAccess.EasyDAClient") On Error Resume Next Dim LeafElements: Set LeafElements = Client.BrowseLeaves("", "OPCLabs.KitServer.2", "Simulation") If Err.Number <> 0 Then WScript.Echo "*** Failure: " & Err.Source & ": " & Err.Description WScript.Quit End If On Error Goto 0 Dim LeafElement: For Each LeafElement In LeafElements WScript.Echo "LeafElements(""" & LeafElement.Name & """).ItemId: " & LeafElement.ItemId Next
# This example shows how to obtain all leaves under the "Simulation" branch of the address space. For each leaf, it # displays the ItemID of the node. # # 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 . # 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. # The QuickOPC package is needed. Install it using "pip install opclabs_quickopc". import opclabs_quickopc # Import .NET namespaces. from OpcLabs.EasyOpc.DataAccess import * from OpcLabs.EasyOpc.OperationModel import * # Instantiate the client object. client = EasyDAClient() # Perform the operation. try: nodeElements = IEasyDAClientExtension.BrowseLeaves(client, '', 'OPCLabs.KitServer.2', 'Simulation') except OpcException as opcException: print('*** Failure: ' + opcException.GetBaseException().Message) exit() # Display results. for nodeElement in nodeElements: print('NodeElements["', nodeElement.Name, '"].ItemId: ', nodeElement.ItemId, sep='')
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