# OpcClassicInterfaces Class

<span class="api-meta">static · since v2.8</span>

<dl class="api-definition">
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx.classic">Opc.UaFx.Classic</a></dd>
<dt>Assembly</dt>
<dd>Opc.UaFx.Advanced.dll</dd>
<dt>Package</dt>
<dd>Opc.UaFx.Advanced v2.59.0</dd>
<dt>Members</dt>
<dd><a href="./members">OpcClassicInterfaces Members</a></dd>
</dl>

Provides the interface specifications of OPC Classic supported by the SDK.

## Syntax

<div class="api-signature" data-lang="csharp">

```csharp
public static class OpcClassicInterfaces
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Module OpcClassicInterfaces
```

</div>

## Inheritance

[Object](https://learn.microsoft.com/dotnet/api/system.object) → **OpcClassicInterfaces**

## Fields

| Name | Description |
|---|---|
| [Ae10](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterfaces/members#ae10)<span class="api-meta">static</span> | Represents the interface specification OPC Alarms and Events 1.0. |
| [Da10](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterfaces/members#da10)<span class="api-meta">static</span> | Represents the interface specification OPC Data Access 1.0. |
| [Da20](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterfaces/members#da20)<span class="api-meta">static</span> | Represents the interface specification OPC Data Access 2.0. |
| [Da30](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterfaces/members#da30)<span class="api-meta">static</span> | Represents the interface specification OPC Data Access 3.0. |
| [Hda10](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterfaces/members#hda10)<span class="api-meta">static</span> | Represents the interface specification OPC Historical Data Access 1.0. |

## Methods

| Name | Description |
|---|---|
| [All](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterfaces/members#all)<span class="api-meta">static</span> | Retrieves all interface specifications of OPC Classic supported by the SDK. |

## Applies to

| Package | Versions |
|---|---|
| Opc.UaFx.Advanced | v2.8–v2.59 |