_AEAttributeElement Interface

Exposes OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace.AEAttributeElement to COM clients.

Object Model

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<CLSCompliantAttribute(False)>
<ComVisibleAttribute(True)>
<GuidAttribute("E7A357CA-667F-4D1F-8A25-D0D148567E29")>
<InterfaceTypeAttribute(ComInterfaceType.InterfaceIsDual)>
Public Interface _AEAttributeElement

'Usage
 
Dim instance As _AEAttributeElement

[CLSCompliant(false)]
[ComVisible(true)]
[Guid("E7A357CA-667F-4D1F-8A25-D0D148567E29")]
[InterfaceType(ComInterfaceType.InterfaceIsDual)]
public interface _AEAttributeElement

[CLSCompliant(false)]
[ComVisible(true)]
[Guid("E7A357CA-667F-4D1F-8A25-D0D148567E29")]
[InterfaceType(ComInterfaceType.InterfaceIsDual)]
public interface class _AEAttributeElement

Remarks

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

Example

COM

VBScript

Rem This example shows information available about OPC event attribute.
Rem
Rem Find all latest examples here: https://www.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
Rem OPC client and subscriber examples in VBScript on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-VBScript .
Rem Missing some example? Ask us for it on our Online Forums, https://forum.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

Const AEEventTypes_All = 7

Dim ServerDescriptor: Set ServerDescriptor = CreateObject("OpcLabs.EasyOpc.ServerDescriptor")
ServerDescriptor.ServerClass = "OPCLabs.KitEventServer.2"

Dim Client: Set Client = CreateObject("OpcLabs.EasyOpc.AlarmsAndEvents.EasyAEClient")
On Error Resume Next
Dim CategoryElements: Set CategoryElements = Client.QueryEventCategories(ServerDescriptor, AEEventTypes_All)
If Err.Number <> 0 Then
    WScript.Echo "*** Failure: " & Err.Source & ": " & Err.Description
    WScript.Quit
End If
On Error Goto 0

Dim CategoryElement: For Each CategoryElement In CategoryElements
    WScript.Echo "Category " & CategoryElement & ":"
    With CategoryElement
        Dim AttributeElement: For Each AttributeElement In .AttributeElements
            WScript.Echo Space(4) & "Information about attribute " & AttributeElement & ":"
            With AttributeElement
                WScript.Echo Space(8) & ".AttributeId: " & .AttributeId
                WScript.Echo Space(8) & ".Description: " & .Description
                WScript.Echo Space(8) & ".DataType: " & .DataType
            End With
        Next
    End With
Next

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

_AEAttributeElement Members
OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace.ComTypes Namespace

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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.