Beckhoff.TwinCAT.Ads.Server 6.1.125

The ID prefix of this package has been reserved for one of the owners of this package by Prefix Reserved
.NET 6.0 .NET Standard 2.0
dotnet add package Beckhoff.TwinCAT.Ads.Server --version 6.1.125
NuGet\Install-Package Beckhoff.TwinCAT.Ads.Server -Version 6.1.125
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Beckhoff.TwinCAT.Ads.Server" Version="6.1.125" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Beckhoff.TwinCAT.Ads.Server --version 6.1.125
#r "nuget: Beckhoff.TwinCAT.Ads.Server, 6.1.125"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Beckhoff.TwinCAT.Ads.Server as a Cake Addin
#addin nuget:?package=Beckhoff.TwinCAT.Ads.Server&version=6.1.125

// Install Beckhoff.TwinCAT.Ads.Server as a Cake Tool
#tool nuget:?package=Beckhoff.TwinCAT.Ads.Server&version=6.1.125


The package 'Beckhoff.TwinCAT.Ads.Server' contains the base framework to create your own ADS Server / virtual ADS Device.


  • .NET 7.0, .NET 6.0 or .NET Standard 2.0 (e.g. >= .NET Framework 4.61) compatible SDK
  • A TwinCAT 3.1.4024 Build.
  • or alternatively for systems where a TwinCAT installation is not running the Nuget package 'Beckhoff.TwinCAT.Ads.AdsRouterConsole'. to route ADS communication.
  • Installed Nuget package manager (for systems without Visual Studio installation).


TwinCAT Version >= 4024.10

Because the Beckhoff.TwinCAT.Ads Version 5.X uses internal interfaces that are available only from TwinCAT 4024.10 on, an appropriate version must be installed locally. The package doesn't work with older installations. An alternativ approach for some use cases is to use the 'Beckhoff.TwinCAT.Ads.AdsRouterConsole' / 'Beckhoff.TwinCAT.TcpIpRouter' packages to establish your own router.

Version Support lifecycle

Package Description .NET Framework TwinCAT Active Support
6.1 Package basing on .NET 7.0/6.0 net7.0, net6.0, netstandard2.0 >= 3.1.4024.10 [^1] X
6.0 Package basing on .NET 6.0 net6.0, netcoreapp3.1, netstandard2.0, net461 >= 3.1.4024.10 [^1] X
5.x Package basing on .NET 5.0[^3] net5.0, netcoreapp3.1, netstandard2.0, net461 >= 3.1.4024.10 [^1]
4.x Package basing on .NET Framework 4.0 net4 All X

[^1]: Requirement on the Host system. No version limitation in remote system communication.

[^2]: Microsoft support for .NET5 ends with May 8, 2022. Therefore it is recommended to update Beckhoff.TwinCAT packages from Version 5 to Version 6.

Migrate from ASP.NET Core 5.0 to 6.0

migrating to the latest .NET Microsoft .NET support lifecycle

First Steps

Create your customized ADS Server by deriving the TwinCAT.Ads.Server.AdsServer class. Fill the virtual handlers with your own code.

using Microsoft.Extensions.Logging;
using System;
using System.Buffers.Binary;
using System.Collections.Concurrent;
using System.Threading;
using System.Threading.Tasks;
using TwinCAT.Ads;
using TwinCAT.Ads.Server;

namespace TestServer
     * Extend the AdsServer class to implement your own ADS server.
    public class AdsSampleServer : AdsServer
        /// <summary>
        /// Fixed ADS Port (to be changed ...)
        /// </summary>
        const ushort ADS_PORT = 42;

        /// <summary>
        /// Fixed Name for the ADS Port (change this ...)
        /// </summary>
        const string ADS_PORT_NAME = "AdsSampleServer_Port42";

        /// <summary>
        /// Logger
        /// </summary>
        private ILogger _logger;

        /* Instantiate an ADS server with a fix ADS port assigned by the ADS router.

        public AdsSampleServer(ILogger logger) : base(ADS_PORT, ADS_PORT_NAME)
            _logger = logger;

        // Override Functions to implement customized Server

Further documentation

The actual version of the documentation is available in the Beckhoff Infosys: Beckhoff Information System

Sample Code

Demo Code for AdsServer implementations can be found here: Beckhoff GitHub

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (5)

Showing the top 5 NuGet packages that depend on Beckhoff.TwinCAT.Ads.Server:

Package Downloads
Beckhoff.TwinCAT.Ads The ID prefix of this package has been reserved for one of the owners of this package by

The Beckhoff.TwinCAT.Ads package includes everything to develop own .NET applications (e.g. visualization, scientific automation) for communication with TwinCAT devices (e.g. PLC, NC or IO-devices). Root object is the AdsClient to communicate to all variants of local and remote ADS servers and devices.

Beckhoff.TwinCAT.Ads.SymbolicServer The ID prefix of this package has been reserved for one of the owners of this package by

The Beckhoff.TwinCAT.Ads.SymbolicServer Package can be used to implement your own ADS Server.


Mocking a TwinCAT Ads Server, for unit testing code with ADS read/write requests.


Covisart Motion Simulator Software Development Kit

Beckhoff.TwinCAT.Ads.SystemServer The ID prefix of this package has been reserved for one of the owners of this package by

The Beckhoff.TwinCAT.Ads.SystemServer Package implements an TwinCAT System Service ADS Server (Port 10000) for usage in combination with the Beckhoff.TwinCAT.Ads.TcpRouter Package.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
6.1.125 1,133 11/23/2023
6.1.86 7,694 9/21/2023
6.1.74 1,896 9/14/2023
6.0.322 90 11/23/2023
6.0.302 1,003 9/21/2023
6.0.296 237 9/14/2023
6.0.286 1,592 9/4/2023
6.0.282 1,582 9/1/2023
6.0.249 33,714 3/10/2023