// Shows how to disable and enable the OPC UA Complex Data plug-in. // // 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.UA; using OpcLabs.EasyOpc.UA.OperationModel; namespace UADocExamples.ComplexData._PluginSetup { class Enabled { public static void Main1() { // Define which server and node we will work with. 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/" UANodeDescriptor nodeDescriptor = "nsu=http://test.org/UA/Data/ ;i=10239"; // [ObjectsFolder]/Data.Static.Scalar.StructureValue // We will explicitly disable the Complex Data plug-in, and read a node which returns complex data. We will // receive an object of type UAExtensionObject, which contains the encoded data in its binary form. In this // form, the data cannot be easily further processed by your application. // // Disabling the Complex Data plug-in may be useful e.g. for licensing reasons (when the product edition you // have does not support the Complex Data plug-in, and you want to avoid the associated error), or for // performance reasons (if you do not need the internal content of the value, for example if your code just // needs to take the value read, and write it elsewhere). var client1 = new EasyUAClient(); client1.InstanceParameters.PluginSetups.FindName("UAComplexDataClient").Enabled = false; object value1; try { value1 = client1.ReadValue(endpointDescriptor, nodeDescriptor); } catch (UAException uaException) { Console.WriteLine("*** Failure: {0}", uaException.GetBaseException().Message); return; } Console.WriteLine(value1); // Now we will read the same value, but with the Complex Data plug-in enabled. This time we will receive an // object of type UAGenericObject, which contains the data in the decoded form, accessible for further // processing by your application. // // Note that it is not necessary to explicitly enable the Complex Data plug-in like this, because it is enabled // by default. var client2 = new EasyUAClient(); client2.InstanceParameters.PluginSetups.FindName("UAComplexDataClient").Enabled = true; object value2 = client2.ReadValue(endpointDescriptor, nodeDescriptor); Console.WriteLine(value2); // Example output: // // Binary Byte[1373]; {nsu=http://test.org/UA/Data/ ;i=11437} // (ScalarValueDataType) structured // On the first line, the type and length of the encoded data is shown, and the node ID is the encoding ID. // On the 2nd line, the kind (structured) and the name of the complex data type (ScalarValueDataType) is shown. } } }
' Shows how to disable and enable the OPC UA Complex Data plug-in. ' ' 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 System Imports OpcLabs.EasyOpc.UA Imports OpcLabs.EasyOpc.UA.OperationModel Namespace ComplexData._PluginSetup Friend Class Enabled Public Shared Sub Main1() ' Define which server we will work with. 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/" ' Define which node we will work with. Dim nodeDescriptor As UANodeDescriptor = _ "nsu=http://test.org/UA/Data/ ;i=10239" ' [ObjectsFolder]/Data.Static.Scalar.StructureValue ' We will explicitly disable the Complex Data plug-in, and read a node which returns complex data. We will ' receive an object of type UAExtensionObject, which contains the encoded data in its binary form. In this ' form, the data cannot be easily further processed by your application. ' ' Disabling the Complex Data plug-in may be useful e.g. for licensing reasons (when the product edition you ' have does not support the Complex Data plug-in, and you want to avoid the associated error), or for ' performance reasons (if you do not need the internal content of the value, for example if your code just ' needs to take the value read, and write it elsewhere). Dim client1 = New EasyUAClient client1.InstanceParameters.PluginSetups.FindName("UAComplexDataClient").Enabled = False Dim value1 As Object Try value1 = client1.ReadValue(endpointDescriptor, nodeDescriptor) Catch uaException As UAException Console.WriteLine("*** Failure: {0}", uaException.GetBaseException.Message) Exit Sub End Try Console.WriteLine(value1) ' Now we will read the same value, but with the Complex Data plug-in enabled. This time we will receive an ' object of type UAGenericObject, which contains the data in the decoded form, accessible for further ' processing by your application. ' ' Note that it is not necessary to explicitly enable the Complex Data plug-in like this, because it is enabled ' by default. Dim client2 = New EasyUAClient client2.InstanceParameters.PluginSetups.FindName("UAComplexDataClient").Enabled = True Dim value2 As Object Try value2 = client2.ReadValue(endpointDescriptor, nodeDescriptor) Catch uaException As UAException Console.WriteLine("*** Failure: {0}", uaException.GetBaseException.Message) Exit Sub End Try Console.WriteLine(value2) ' Example output: ' ' Binary Byte[1373]; {nsu=http://test.org/UA/Data/ ;i=11437} ' (ScalarValueDataType) structured ' On the first line, the type and length of the encoded data is shown, and the node ID is the encoding ID. ' On the 2nd line, the kind (structured) and the name of the complex data type (ScalarValueDataType) is shown. End Sub End Class End Namespace
// Shows how to disable and enable the OPC UA Complex Data plug-in. // // Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . // OPC client and subscriber examples in Object Pascal (Delphi) on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-OP . // 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. class procedure Enabled.Main; var Client1, Client2: _EasyUAClient; EndpointDescriptor: string; NodeDescriptor: string; Value1, Value2: OleVariant; begin // Define which server and node we will work with. EndpointDescriptor := //'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 := 'nsu=http://test.org/UA/Data/ ;i=10239'; // [ObjectsFolder]/Data.Static.Scalar.StructureValue // We will explicitly disable the Complex Data plug-in, and read a node which returns complex data. We will // receive an object of type UAExtensionObject, which contains the encoded data in its binary form. In this // form, the data cannot be easily further processed by your application. // // Disabling the Complex Data plug-in may be useful e.g. for licensing reasons (when the product edition you // have does not support the Complex Data plug-in, and you want to avoid the associated error), or for // performance reasons (if you do not need the internal content of the value, for example if your code just // needs to take the value read, and write it elsewhere). Client1 := CoEasyUAClient.Create; Client1.InstanceParameters.PluginSetups.FindName('UAComplexDataClient').Enabled := false; try Value1 := Client1.ReadValue(EndpointDescriptor, NodeDescriptor); except on E: EOleException do begin WriteLn(Format('*** Failure: %s', [E.GetBaseException.Message])); Exit; end; end; WriteLn(Value1); // Now we will read the same value, but with the Complex Data plug-in enabled. This time we will receive an // object of type UAGenericObject, which contains the data in the decoded form, accessible for further // processing by your application. // // Note that it is not necessary to explicitly enable the Complex Data plug-in like this, because it is enabled // by default. Client2 := CoEasyUAClient.Create; Client2.InstanceParameters.PluginSetups.FindName('UAComplexDataClient').Enabled := true; Value2 := Client2.ReadValue(EndpointDescriptor, NodeDescriptor); WriteLn(Value2); // Example output: // // Binary Byte[1373]; {nsu=http://test.org/UA/Data/ ;i=11437} // (ScalarValueDataType) structured // On the first line, the type and length of the encoded data is shown, and the node ID is the encoding ID. // On the 2nd line, the kind (structured) and the name of the complex data type (ScalarValueDataType) is shown. end;
# Shows how to disable and enable the OPC UA Complex Data plug-in. # # 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.UA 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/' # [ObjectsFolder]/Data.Static.Scalar.StructureValue nodeDescriptor = UANodeDescriptor('nsu=http://test.org/UA/Data/ ;i=10239') # We will explicitly disable the Complex Data plug-in, and read a node which returns complex data. We will # receive an object of type UAExtensionObject, which contains the encoded data in its binary form. In this # form, the data cannot be easily further processed by your application. # # Disabling the Complex Data plug-in may be useful e.g. for licensing reasons (when the product edition you # have does not support the Complex Data plug-in, and you want to avoid the associated error), or for # performance reasons (if you do not need the internal content of the value, for example if your code just # needs to take the value read, and write it elsewhere). client1 = EasyUAClient() client1.InstanceParameters.PluginSetups.FindName('UAComplexDataClient').Enabled = False try: value1 = IEasyUAClientExtension.ReadValue(client1, endpointDescriptor, nodeDescriptor) except UAException as uaException: print('*** Failure: ' + uaException.GetBaseException().Message) exit() print(value1) # Now we will read the same value, but with the Complex Data plug-in enabled. This time we will receive an # object of type UAGenericObject, which contains the data in the decoded form, accessible for further # processing by your application. # # Note that it is not necessary to explicitly enable the Complex Data plug-in like this, because it is enabled # by default. client2 = EasyUAClient() client2.InstanceParameters.PluginSetups.FindName('UAComplexDataClient').Enabled = True try: value2 = IEasyUAClientExtension.ReadValue(client2, endpointDescriptor, nodeDescriptor) except UAException as uaException: print('*** Failure: ' + uaException.GetBaseException().Message) exit() print(value2) print() print('Finished.')
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