CODESYS® Releases & Updates

CODESYS Release & Teaser Notes

Visualization

01. Oktober 2025

Aktuellste Version: 4.8.1.0

Maintenance release with bug fixes

File-Based Storage

10. September 2025

Aktuellste Version: 0.9.1.0

This version contains several Bug-Fixes.

OPC DA Server SL

25. September 2025

Aktuellste Version: 3.5.21.30

This version contains mainly bug fixes and some improvements in various product areas.

Control RTE SL

25. September 2025

Aktuellste Version: 3.5.21.30

This version contains mainly bug fixes and some improvements in various product areas.

HMI SL

25. September 2025

Aktuellste Version: 3.5.21.30

This version contains mainly bug fixes and some improvements in various product areas.

Control Win SL

25. September 2025

Aktuellste Version: 3.5.21.30

This version contains mainly bug fixes and some improvements in various product areas.

Development System V3

25. September 2025

Aktuellste Version: 3.5.21.30

This version contains mainly bug fixes and some improvements in various product areas.

Installer

23. September 2025

Aktuellste Version: 2.5.0.0

Coming Soon: A Smoother, Smarter Installation Experience

Get ready for:

Improved Workflow for CODESYS Installations
Faster and more intuitive – setting up installations is easier than ever

Compare Installation Configurations
Spot differences instantly with side-by-side comparisons

Bug Fixes and Stability Improvements
Several issues have been resolved for a more reliable experience

Soft Motion Stäubli Support

18. September 2025

Aktuellste Version: 1.0.0.0

CODESYS SoftMotion Staubli allows to control Staubli robots of the TS2 and TX2 series with CODESYS using the uniVAL drive interface.

CODESYS EtherCAT version 4.10.0.0 contains a known issue with the function "Load PDO info from the device", which prevents it from working properly with the CODESYS SoftMotion Staubli Support package. Please use either an earlier or a newer version of CODESYS EtherCAT instead.

Application Composer

15. September 2025

Aktuellste Version: 4.4.0.0

This version introduces the new, application-based subscription licenses that can be updated via the Store. It also includes maintenance of Persistance Manager (15), DataLog Manager (5) and others (11).

Trace

15. September 2025

Aktuellste Version: 4.3.0.0

Maintenance release with bug fixes.

CFC

09. September 2025

Aktuellste Version: 4.5.0.0

This version contains several bug fixes including

Refactoring:

  • Dialog shows wrong places of changes in page-oriented CFC
  • Renaming an FB instance leads to rename of box type

Project Update:

  • When updating a project from SP16P9 (CFC 4.2.0.0) to newer versions like SP19P4 or SP20P2 (CFC 4.3.0.0 / 4.4.0.0), the alignment of boxes (inputs/outputs) and connecting links changes unexpectedly due to the introduction of the "Hide namespaces" feature

SoftMotion

02. September 2025

Aktuellste Version: 4.19.0.0

CODESYS SoftMotion 4.19.0.0 brings support for additional axes to our robotics functionality.

CodeMeter for Linux SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

TargetVisu for Linux SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Virtual Control for Linux SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Edge Gateway for Linux

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for WAGO Touch Panels 600 SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for Raspberry Pi SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for PLCnext SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for PFC200 SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for PFC100 SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for Linux SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control SL Deploy Tool

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control SL Extension Package

26. August 2025

Aktuellste Version: 4.18.0.0

  • Update to runtime SDK V3.5 SP21 Patch 3
  • Deploy Tool: Improved Usability - Information over missing dependencies

Control for Linux ARM SL

26. August 2025

Aktuellste Version: 4.18.0.0

  • Update to runtime SDK V3.5 SP21 Patch 3
  • Deploy Tool: Improved Usability - Information over missing dependencies

Control for IOT2000 SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Virtual Safe Control SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for emPC-A/iMX6 SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Control for BeagleBone SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

PROFINET

20. August 2025

Aktuellste Version: 4.7.1.0

This version fixes a bug, that in case of a communication error generated many log entries.
Moreover it fixes a bug of the PN Controller that may occur in special situations when disabling and re-enabling devices.

EtherCAT

19. August 2025

Aktuellste Version: 4.10.0.0

This version contains bug fixes.

Communication

06. August 2025

Aktuellste Version: 4.6.1.0

This version fixes sporadic crashes when disconnecting a data source from an OPC UA Server. Also some issues when working with datas sources at engineering time are fixed.

Modbus

04. August 2025

Aktuellste Version: 4.5.0.0

This version will support the CODESYS Redundancy add-on.
Moreover it includes the support for network redundancy by the client, given that the servers support more than one connection.
It also contains bug fixes and minor improvements.

Safety SIL2

24. Juli 2025

Aktuellste Version: 3.5.21.0

The release of our SIL2 certified runtime based on runtime system SDK V3.5 SP21. This version includes the PLCOpen Safety V2.0 function blocks for factory automation.

String Libraries

23. Juli 2025

Aktuellste Version: 4.1.0.0

This version optimizes the treatment of 7bit-ASCII-only strings and simplifies the exchange with classic string functions by an internal terminal null.

Code Generator PowerPC

14. Juli 2025

Aktuellste Version: 4.0.2.0

Contains a fix for issues with the TEST_AND_SET operator not working reliably.

Code Generator Cortex M3

14. Juli 2025

Aktuellste Version: 4.0.2.0

Issues with jumps in very large POUs on ARM Cortex targets are fixed.

OPC UA Client API

03. Juli 2025

Aktuellste Version: 1.2.0.0

This version contains improvements in diagnosis and in the decoding and writing of structures & arrays.

Security Agent

25. Juni 2025

Aktuellste Version: 1.4.0.0

This release includes usability improvements.

Static Analysis

18. Juni 2025

Aktuellste Version: 5.1.0.0

Analysis results can be exported in the SARIF format which allows to view and process it in third party tools and CI workflows.

Automation Server

17. Juni 2025

Aktuellste Version: 1.37.0.0

This version contains compatibility improvements and bug fixes, supporting additional PLC types.

Safety Extension

17. Juni 2025

Aktuellste Version: 4.4.0.0

Bug fix version for a more robust online communication with CODESYS Safety Extension.

LicenseServer for Linux SL

26. August 2025

Aktuellste Version: 4.17.0.0

Update to runtime SDK V3.5 SP21 Patch 2

Ladder

23. Mai 2025

Aktuellste Version: 1.2.0.0

Adjustment of the execution order within a network. 
In this version, the execution order within a network is the same as in LD FBD.

Simulation Interface

22. Mai 2025

Aktuellste Version: 0.9.0.0

Preview version of the Simulation Interface for evaluation and integration in simulation tools (please contact sales): The Simulation Interface integrates CODESYS applications into machine simulations (Software-in-the-loop) by a toggle switch using OPC UA mechanisms.

Recipes

14. Mai 2025

Aktuellste Version: 4.6.0.0

The code generation for a recipe definition has been further optimized for array of struct.
A few important bug fixes have been made.

IIoT Libraries SL

13. Mai 2025

Aktuellste Version: 1.12.0.0

This version allows communicating with Azure IoT Hub via WebSocket proxies, provides a new library for accessing a Weather Forecast service, and includes maintenance of MQTT Client, AWS IoT Core Client, SNMP Service, Mail

Visualization Support

07. Mai 2025

Aktuellste Version: 4.6.0.0

A few important bug fixes and smaller improvements have been made.

PROFIBUS

05. Mai 2025

Aktuellste Version: 4.2.0.0

This version contains bug fixes.

Redundancy

24. April 2025

Aktuellste Version: 4.2.0.0

Update with improvements and bug fixes!

Automation Server Connector

10. April 2025

Aktuellste Version: 1.36.0.0

Base Libraries

02. April 2025

Aktuellste Version: 4.1.0.0

This version can be used without references of to-be-discontinued CAA libaries, and contains optimizations of "Element Collections".

Edge Gateway for Windows

18. März 2025

Aktuellste Version: 3.5.21.0

Service packs for CODESYS V3 are released at annual intervals and include numerous improvements and bug fixes.

 

Control RTE SL (for Beckhoff CX)

18. März 2025

Aktuellste Version: Version 3.5.21.0

Service packs for CODESYS V3 are released at annual intervals and include numerous improvements and bug fixes.

LD FBD

29. Januar 2025

Aktuellste Version: 4.6.0.0

This version contains bug fixes and minor improvements.

CANopen Manager SL

27. Januar 2025

Aktuellste Version: 4.3.0.0

This version was triggered by a major bug (CANOPEN-254) and will include some other bug fixes and improvements.

CANopen Device SL

27. Januar 2025

Aktuellste Version: 4.3.0.0

This version was triggered by a major bug (CANOPEN-254) and will include some other bug fixes and improvements.

Git

15. Januar 2025

Aktuellste Version: 1.7.0.0

Maintenance release containing bug fixes and usability improvements.

OPC UA PubSub SL

19. Dezember 2024

Aktuellste Version: 1.2.0.0

This version changes the encoding of array data types conforming to the specification and compatible with other OPC UA tools.

Library Documentation Support

25. November 2024

Aktuellste Version: 4.6.0.0

This version contains bug fixes and minor improvements.

EtherNet/IP

23. Juli 2025

Aktuellste Version: 4.8.0.0

Besides bug fixes and improvents, this version will bring a network overview page with all connections of all adapters.

UML

23. Juli 2024

Aktuellste Version: 4.4.0.0

Last maintenance release before start of the service phase.

Test Manager

05. Oktober 2023

Aktuellste Version: 5.1.0.0

Created the possibility for device manufacturers which use their own licensing mechanisms for the engineering environment to integrate the CODESYS Professional Developer Edition into their systems.

SVN

09. Oktober 2024

Aktuellste Version: 4.6.2.0

Maintenance release

SFC

19. Dezember 2023

Aktuellste Version: 4.3.0.0

This version contains bug fixes and improvements.

Scripting

26. Juli 2023

Aktuellste Version: 4.1.0.0

This is a maintenance release fixing a number of issues with scripting. The included IronPython version is updated to 2.7.12.

Safety for EtherCAT Safety Module SL

29. August 2024

Aktuellste Version: 4.4.0.0

This version contains bug fixes and minor improvements.

POU Visu Generator

25. Juni 2024

Aktuellste Version: 1.0.0.0

The POU Visu Generator can generate visualizations from SFC and Ladder POUs. If a transition of a SFC POU is implemented as Ladder, a navigation into the Ladder transition and back to the SFC POU is generated. A great possibility to view SFC and Ladder diagrams within the visualization.

Package Designer

19. Juni 2024

Aktuellste Version: 4.2.0.0

This version contains several bug fixes and minor improvements.

Mass Licenser

08. August 2024

Aktuellste Version: 1.1.0.0

Support of Application Based Bundle-Licenses

Memory Tools

25. April 2024

Aktuellste Version: 4.1.0.0

The usage of the memory tools is supported for core dumps.

EtherNet Adapter

28. März 2023

Aktuellste Version: 4.2.0.0

This version adds language support for Turkish and Portuguese and contains a bugfix.

EDS Import

09. April 2024

Aktuellste Version: 4.2.0.0

This version contains bug fixes and improvements.

DNP3 SL

06. November 2023

Aktuellste Version: 1.0.0.0

  • This is the initial release for supporting the DNP3 protocol in CODESYS applications. The protocol can be configured and used through a new library for DNP3. A CODESYS Store Runtime product for Linux with at least version 4.10 is required for using DNP3.
  • Known Limitations:
  • configurator is not available, DNP3 can be used through an user-friendly library
  • In this first release, only the usage of a CODESYS device as an outstation is supported.

Core Dump

29. April 2024

Aktuellste Version: 4.2.0.0

This version contains bug fixes and minor improvements.

Library Dependency Inspection

26. September 2024

Aktuellste Version: 1.1.0.0

This release fixes the problem that projects may get modified on opening, when they use libraries from Inspection-supporting library addons (currently CODESYS Base Libraries, CODESYS String Libraries).

Code Generator TriCore

24. Februar 2023

Aktuellste Version: 4.0.1.0

This is a maintenance release fixing known issues for the usage of packed data structures. Furthermore, the usage of the FPU can be disabled explicitly for devices.

Code Generator LoongArch64

27. März 2024

Aktuellste Version: 1.0.1.0

Comparisons with REAL values returned incorrect results in certain cases. An update is recommended for all customers to avoid unexpected behaviors of applications.

Code Generator ARM64

23. Mai 2023

Aktuellste Version: 4.0.1.0

Improved support for Clang / LLVM EABI

Code Generator ARM

24. Mai 2023

Aktuellste Version: 4.0.3.0

Improved support for Clang / LLVM EABI.

IO-Link SL

23. April 2024

Aktuellste Version: 4.3.0.0

By serving as a gateway, this version enables proprietary add-ons to connect to IO-Link devices.

RISC Front End

30. Januar 2024

Aktuellste Version: 4.0.2.0

Fixed issues in certain cases when using pack_mode attribute on ARM based devices.

BACnet SL

06. Dezember 2023

Aktuellste Version: 2.0.0.0

Support new functionality standardized in BACnet standard ASHRAE 135-2020 and protocol revision 25.

Profiler

09. Oktober 2023

Aktuellste Version: 2.2.0.0

Application Composer Single License

05. Oktober 2023

Aktuellste Version: 4.3.1.0

Update of "CODESYS Application Composer Single License" only, no functional changes. This update is necessary for running "CODESYS Application Composer" (any version) in SL-mode on any new CODESYS versions starting with V3.5 SP19 Patch 3. It cannot be used with older CODESYS versions. For using "CODESYS Application Composer" with older CODESYS versions, use the old "CODESYS Application Composer Single License".