// Shows how to write into an OPC item that is of array type, and read the array value back. // // 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.OperationModel; namespace DocExamples.DataAccess._EasyDAClient { partial class WriteItemValue { public static void Array() { // Instantiate the client object. var client = new EasyDAClient(); Console.WriteLine("Writing array value..."); try { client.WriteItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_ArrayOfI2", new Int16[] { 1234, 2345, 3456 }); } catch (OpcException opcException) { Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message); return; } Console.WriteLine("Reading array value..."); short[] value; try { value = (Int16[])client.ReadItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_ArrayOfI2"); } catch (OpcException opcException) { Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message); return; } if (!(value is null)) { Console.WriteLine(value[0]); Console.WriteLine(value[1]); Console.WriteLine(value[2]); } } } }
' Shows how to write into an OPC item that is of array type, and read the array value back. ' ' 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.OperationModel Namespace DataAccess._EasyDAClient Partial Friend Class WriteItemValue Public Shared Sub Array() Dim client As New EasyDAClient() Console.WriteLine("Writing array value...") Try client.WriteItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_ArrayOfI2", New Int16() {1234, 2345, 3456}) Catch opcException As OpcException Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message) Exit Sub End Try Console.WriteLine("Reading array value...") Dim value As Int16() Try value = CType(client.ReadItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_ArrayOfI2"), Int16()) Catch opcException As OpcException Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message) Exit Sub End Try If Not IsNothing(value) Then Console.WriteLine(value(0)) Console.WriteLine(value(1)) Console.WriteLine(value(2)) End If End Sub End Class End Namespace
# Shows how to write into an OPC item that is of array type, and read the array value back. # # 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() print('Writing array value...') try: IEasyDAClientExtension.WriteItemValue(client, '', 'OPCLabs.KitServer.2', 'Simulation.Register_ArrayOfI2', [1234, 2345, 3456]) except OpcException as opcException: print('*** Failure: ' + opcException.GetBaseException().Message) exit() print('Reading array value...') try: value = IEasyDAClientExtension.ReadItemValue(client, '', 'OPCLabs.KitServer.2', 'Simulation.Register_ArrayOfI2') except OpcException as opcException: print('*** Failure: ' + opcException.GetBaseException().Message, sep='') exit() if value is not None: print(value[0]) print(value[1]) print(value[2]) print('Finished.')
Copyright © 2004-2024 CODE Consulting and Development, s.r.o., Plzen. All rights reserved. Web page: www.opclabs.com
Documentation Home, Send Feedback. Resources: Knowledge Base, Product Downloads. Technical support: Online Forums, FAQ.Missing some example? Ask us for it on our Online Forums! You do not have to own a commercial license in order to use Online Forums, and we reply to every post.