OPC Studio User's Guide and Reference
Examples - OPC UA Alarms&Conditions - Event pull
// This example shows how to subscribe to event notifications, pull events, and display each incoming event. // // Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . using System; using OpcLabs.EasyOpc.UA; using OpcLabs.EasyOpc.UA.AddressSpace.Standard; using OpcLabs.EasyOpc.UA.OperationModel; namespace UADocExamples.AlarmsAndConditions { class PullEventNotification { public static void Main1() { // Define which server we will work with. UAEndpointDescriptor endpointDescriptor = "opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer"; // Instantiate the client object. // In order to use event pull, you must set a non-zero queue capacity upfront. var client = new EasyUAClient { PullEventNotificationQueueCapacity = 1000 }; Console.WriteLine("Subscribing..."); client.SubscribeEvent(endpointDescriptor, UAObjectIds.Server, 1000); Console.WriteLine("Processing event notifications for 30 seconds..."); int endTick = Environment.TickCount + 30 * 1000; do { EasyUAEventNotificationEventArgs eventArgs = client.PullEventNotification(2 * 1000); if (!(eventArgs is null)) // Handle the notification event. Console.WriteLine(eventArgs); } while (Environment.TickCount < endTick); Console.WriteLine("Unsubscribing..."); client.UnsubscribeAllMonitoredItems(); Console.WriteLine("Finished."); } // Example output (truncated): //Subscribing... //Processing event notifications for 30 seconds... //[] Success //[] Success; Refresh; RefreshInitiated //[] Success; Refresh; (10 field results) [EastTank] 100! "The dialog was activated" @9/10/2019 8:08:23 PM //[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:13 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm was acknoweledged." @11/9/2019 9:56:23 AM //[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:17 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:09:07 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:10:09 PM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:02 PM //[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:16 PM //[] Success; Refresh; (10 field results) [NorthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:11 PM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:10:19 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:12 PM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:04 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:08:58 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:09:48 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [SouthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [SouthMotor] 700! "The alarm was acknoweledged." @10/14/2019 4:00:21 PM //[] Success; Refresh; (10 field results) [SouthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:03 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:02 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:59 PM //[] Success; Refresh; RefreshComplete //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:43 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:43 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:44 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:44 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:45 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:45 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:46 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:46 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:47 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:47 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:48 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:48 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:49 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:49 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:50 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:50 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:51 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:51 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:52 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:52 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:53 AM //[] Success; (10 field results) [NorthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:53 AM //[] Success; (10 field results) [WestTank] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [SouthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:54 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:54 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:55 AM //... } }
# This example shows how to subscribe to event notifications, pull events, and display each incoming event. # # 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.AddressSpace using namespace OpcLabs.EasyOpc.UA.AddressSpace.Standard # 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" # Define which server we will work with. [UAEndpointDescriptor]$endpointDescriptor = "opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer" # Instantiate the client object. $client = New-Object EasyUAClient # In order to use event pull, you must set a non-zero queue capacity upfront. $client.PullEventNotificationQueueCapacity = 1000 Write-Host "Subscribing..." [IEasyUAClientExtension]::SubscribeEvent($client, $endpointDescriptor, [UAObjectIds]::Server, 1000) Write-Host "Processing event notifications for 30 seconds..." $stopwatch = [System.Diagnostics.Stopwatch]::StartNew() while ($stopwatch.Elapsed.TotalSeconds -lt 60) { $eventArgs = $client.PullEventNotification(2*1000) if ($eventArgs -ne $null) { # Handle the notification event. Write-Host $eventArgs } } Write-Host "Unsubscribing..." $client.UnsubscribeAllMonitoredItems() Write-Host "Finished." # Example output (truncated): #Subscribing... #Processing event notifications for 30 seconds... #[] Success #[] Success; Refresh; RefreshInitiated #[] Success; Refresh; (10 field results) [EastTank] 100! "The dialog was activated" @9/10/2019 8:08:23 PM #[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:13 PM #[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm was acknoweledged." @11/9/2019 9:56:23 AM #[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:17 PM #[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:09:07 PM #[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:10:09 PM #[] Success; Refresh; (10 field results) [NorthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM #[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:02 PM #[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:16 PM #[] Success; Refresh; (10 field results) [NorthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM #[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:11 PM #[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:10:19 PM #[] Success; Refresh; (10 field results) [WestTank] 100! "The dialog was activated" @9/10/2019 8:08:25 PM #[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:12 PM #[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM #[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:04 PM #[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:08:58 PM #[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:09:48 PM #[] Success; Refresh; (10 field results) [SouthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM #[] Success; Refresh; (10 field results) [SouthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM #[] Success; Refresh; (10 field results) [SouthMotor] 700! "The alarm was acknoweledged." @10/14/2019 4:00:21 PM #[] Success; Refresh; (10 field results) [SouthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:03 PM #[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:02 PM #[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:59 PM #[] Success; Refresh; RefreshComplete #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:43 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:43 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:44 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:44 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:45 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:45 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:46 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:46 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:47 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:47 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:48 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:48 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:49 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:49 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:50 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:50 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:51 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:51 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:52 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:52 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:53 AM #[] Success; (10 field results) [NorthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:53 AM #[] Success; (10 field results) [WestTank] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM #[] Success; (10 field results) [SouthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:54 AM #[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:54 AM #[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:55 AM #...
# This example shows how to subscribe to event notifications, pull events, and display each incoming event. # # 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 time # Import .NET namespaces. from OpcLabs.EasyOpc.UA import * from OpcLabs.EasyOpc.UA.AddressSpace.Standard import * from OpcLabs.EasyOpc.UA.OperationModel import * # Define which server we will work with. endpointDescriptor = UAEndpointDescriptor('opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer') # Instantiate the client object. # In order to use event pull, you must set a non-zero queue capacity upfront. client = EasyUAClient() client.PullEventNotificationQueueCapacity = 1000 print('Subscribing...') IEasyUAClientExtension.SubscribeEvent( client, endpointDescriptor, UANodeDescriptor(UAObjectIds.Server), 1000) print('Processing event notifications for 30 seconds...') endTime = time.time() + 30 while time.time() < endTime: eventArgs = IEasyUAClientExtension.PullEventNotification(client, 2*1000) if eventArgs is not None: # Handle the notification event. print(eventArgs) print('Unsubscribing...') client.UnsubscribeAllMonitoredItems() print('Finished.')
' This example shows how to subscribe to event notifications, pull events, and display each incoming event. ' ' 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.Standard Imports OpcLabs.EasyOpc.UA.OperationModel Namespace AlarmsAndConditions Friend Class PullEventNotification Public Shared Sub Main1() ' Instantiate the client object Dim client = New EasyUAClient() ' In order to use event pull, you must set a non-zero queue capacity upfront. client.PullEventNotificationQueueCapacity = 1000 Console.WriteLine("Subscribing...") client.SubscribeEvent( "opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer", UAObjectIds.Server, 1000) Console.WriteLine("Processing event notifications for 30 seconds...") Dim endTick As Integer = Environment.TickCount + 30 * 1000 Do Dim eventArgs As EasyUAEventNotificationEventArgs = client.PullEventNotification(2 * 1000) If Not eventArgs Is Nothing Then ' Handle the notification event Console.WriteLine(eventArgs) End If Loop While Environment.TickCount < endTick End Sub End Class End Namespace
// This example shows how to subscribe to event notifications, pull events, and display each incoming event. // // Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . class procedure PullEventNotification.Main; var Client: OpcLabs_EasyOpcUA_TLB._EasyUAClient; EndTick: Cardinal; EventArgs: _EasyUAEventNotificationEventArgs; begin // Instantiate the client object and hook events Client := CoEasyUAClient.Create; // In order to use event pull, you must set a non-zero queue capacity upfront. Client.PullEventNotificationQueueCapacity := 1000; WriteLn('Subscribing...'); Client.SubscribeEvent( 'opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer', 'nsu=http://opcfoundation.org/UA/;i=2253', // UAObjectIds.Server 1000); WriteLn('Processing event notifications for 30 seconds...'); EndTick := Ticks + 30*1000; while Ticks < EndTick do begin EventArgs := Client.PullEventNotification(2*1000); if EventArgs <> nil then // Handle the notification event WriteLn(EventArgs.ToString); end; WriteLn('Unsubscribing...'); Client.UnsubscribeAllMonitoredItems; WriteLn('Finished.'); end; // Example output (truncated): //Subscribing... //Processing event notifications for 30 seconds... //[] Success //[] Success; Refresh; RefreshInitiated //[] Success; Refresh; (10 field results) [EastTank] 100! "The dialog was activated" @9/10/2019 8:08:23 PM //[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:13 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm was acknoweledged." @11/9/2019 9:56:23 AM //[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:17 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:09:07 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:10:09 PM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:02 PM //[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:16 PM //[] Success; Refresh; (10 field results) [NorthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:11 PM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:10:19 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:12 PM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:04 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:08:58 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:09:48 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [SouthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [SouthMotor] 700! "The alarm was acknoweledged." @10/14/2019 4:00:21 PM //[] Success; Refresh; (10 field results) [SouthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:03 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:02 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:59 PM //[] Success; Refresh; RefreshComplete //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:43 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:43 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:44 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:44 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:45 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:45 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:46 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:46 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:47 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:47 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:48 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:48 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:49 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:49 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:50 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:50 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:51 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:51 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:52 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:52 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:53 AM //[] Success; (10 field results) [NorthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:53 AM //[] Success; (10 field results) [WestTank] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [SouthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:54 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:54 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:55 AM //...
// This example shows how to subscribe to event notifications, pull events, and display each incoming event. // // Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . // Instantiate the client object and hook events $Client = new COM("OpcLabs.EasyOpc.UA.EasyUAClient"); $Client->PullEventNotificationQueueCapacity = 1000; printf("Subscribing...\n"); $Client->SubscribeEvent( "opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer", "nsu=http://opcfoundation.org/UA/;i=2253", // UAObjectIds_Server 1000); printf("Processing event notifications for 30 seconds...\n"); $startTime = time(); do { $EventArgs = $Client->PullEventNotification(2*1000); if (!is_null($EventArgs)) { // Handle the notification event printf("%s\n", $EventArgs); } } while (time() < $startTime + 30); printf("Unsubscribing...\n"); $Client->UnsubscribeAllMonitoredItems; printf("Waiting for 5 seconds...\n"); $startTime = time(); do { com_message_pump(1000); } while (time() < $startTime + 5); // Example output (truncated): //Subscribing... //Processing event notifications for 30 seconds... //[] Success //[] Success; Refresh; RefreshInitiated //[] Success; Refresh; (10 field results) [EastTank] 100! "The dialog was activated" @9/10/2019 8:08:23 PM //[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:13 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm was acknoweledged." @11/9/2019 9:56:23 AM //[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:17 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:09:07 PM //[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:10:09 PM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:02 PM //[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:16 PM //[] Success; Refresh; (10 field results) [NorthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:11 PM //[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:10:19 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:12 PM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:04 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:08:58 PM //[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:09:48 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM //[] Success; Refresh; (10 field results) [SouthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM //[] Success; Refresh; (10 field results) [SouthMotor] 700! "The alarm was acknoweledged." @10/14/2019 4:00:21 PM //[] Success; Refresh; (10 field results) [SouthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:03 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:02 PM //[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:59 PM //[] Success; Refresh; RefreshComplete //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:43 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:43 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:44 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:44 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:45 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:45 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:46 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:46 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:47 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:47 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:48 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:48 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:49 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:49 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:50 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:50 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:51 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:51 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:52 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:52 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:53 AM //[] Success; (10 field results) [NorthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:53 AM //[] Success; (10 field results) [WestTank] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [SouthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:54 AM //[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:54 AM //[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:55 AM //...
// This example shows how to subscribe to event notifications, pull events, and display each incoming event. // // Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . class procedure PullEventNotification.Main; var Client: EasyUAClient; EndTick: Cardinal; EventArgs: _EasyUAEventNotificationEventArgs; begin // Instantiate the client object and hook events Client := CoEasyUAClient.Create; // In order to use event pull, you must set a non-zero queue capacity upfront. Client.PullEventNotificationQueueCapacity := 1000; WriteLn('Subscribing...'); Client.SubscribeEvent( 'opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer', 'nsu=http://opcfoundation.org/UA/;i=2253', // UAObjectIds.Server 1000); WriteLn('Processing event notifications for 30 seconds...'); EndTick := GetTickCount + 60*1000; while GetTickCount < EndTick do begin EventArgs := Client.PullEventNotification(2*1000); if EventArgs <> nil then // Handle the notification event WriteLn(EventArgs.ToString); end; WriteLn('Unsubscribing...'); Client.UnsubscribeAllMonitoredItems; WriteLn('Finished.'); end;
Rem This example shows how to subscribe to event notifications, pull events, and display each incoming event. Rem Rem Find all latest examples here : https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . Option Explicit Const UAObjectIds_Server = "nsu=http://opcfoundation.org/UA/;i=2253" ' Instantiate the client object and hook events Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.UA.EasyUAClient") ' In order to use event pull, you must set a non-zero queue capacity upfront. Client.PullEventNotificationQueueCapacity = 1000 WScript.Echo "Subscribing..." Client.SubscribeEvent "opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer", UAObjectIds_Server, 1000 WScript.Echo "Processing event notifications for 30 seconds..." Dim endTime: endTime = Now() + 30*(1/24/60/60) Do Dim EventArgs: Set EventArgs = Client.PullEventNotification(2*1000) If Not (EventArgs Is Nothing) Then ' Handle the notification event WScript.Echo EventArgs End If Loop While Now() < endTime ' Example output (truncated): 'Subscribing... 'Processing event notifications for 30 seconds... '[] Success '[] Success; Refresh; RefreshInitiated '[] Success; Refresh; (10 field results) [EastTank] 100! "The dialog was activated" @9/10/2019 8:08:23 PM '[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:13 PM '[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm was acknoweledged." @11/9/2019 9:56:23 AM '[] Success; Refresh; (10 field results) [EastTank] 500! "The alarm was acknoweledged." @10/14/2019 4:00:17 PM '[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:09:07 PM '[] Success; Refresh; (10 field results) [EastTank] 100! "The alarm severity has increased." @9/10/2019 8:10:09 PM '[] Success; Refresh; (10 field results) [NorthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM '[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:02 PM '[] Success; Refresh; (10 field results) [NorthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:16 PM '[] Success; Refresh; (10 field results) [NorthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM '[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:11 PM '[] Success; Refresh; (10 field results) [NorthMotor] 100! "The alarm severity has increased." @9/10/2019 8:10:19 PM '[] Success; Refresh; (10 field results) [WestTank] 100! "The dialog was activated" @9/10/2019 8:08:25 PM '[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:12 PM '[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM '[] Success; Refresh; (10 field results) [WestTank] 300! "The alarm was acknoweledged." @10/14/2019 4:00:04 PM '[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:08:58 PM '[] Success; Refresh; (10 field results) [WestTank] 100! "The alarm severity has increased." @9/10/2019 8:09:48 PM '[] Success; Refresh; (10 field results) [SouthMotor] 100! "The dialog was activated" @9/10/2019 8:08:25 PM '[] Success; Refresh; (10 field results) [SouthMotor] 300! "The alarm severity has increased." @11/9/2019 10:29:42 AM '[] Success; Refresh; (10 field results) [SouthMotor] 700! "The alarm was acknoweledged." @10/14/2019 4:00:21 PM '[] Success; Refresh; (10 field results) [SouthMotor] 500! "The alarm was acknoweledged." @10/14/2019 4:00:03 PM '[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:02 PM '[] Success; Refresh; (10 field results) [SouthMotor] 100! "The alarm severity has increased." @9/10/2019 8:09:59 PM '[] Success; Refresh; RefreshComplete '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:43 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:43 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:44 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:44 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:45 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:45 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:46 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:46 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:47 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:47 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:48 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:48 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:49 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:49 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:50 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:50 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:51 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:51 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:52 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:52 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:53 AM '[] Success; (10 field results) [NorthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:53 AM '[] Success; (10 field results) [WestTank] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM '[] Success; (10 field results) [SouthMotor] 500! "The alarm severity has increased." @11/9/2019 10:29:53 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:54 AM '[] Success; (10 field results) [Internal] 500! "Events Raised" @11/9/2019 10:29:54 AM '[] Success; (10 field results) [Internal] 500! "Raising Events" @11/9/2019 10:29:55 AM '...
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