
CODESYS Release & Teaser Notes
Mass Licenser
10 Novembre 2025
Versione più recente: 1.2.0.0
- added out-of-license message with configurable threshold
- added possibility to execute configurable batch file, once license threshold is reached
- added license restore support
- support of license name instead of only product codes
Base Libraries
24 Ottobre 2025
Versione più recente: 4.0.1.0
This version prepares the transition to version 5.0: It provides unbound-placeholder resolution for the Memory Block Manager library of CODESYS. This allows for add-ons and for projects that can safely switch between Base Libraries 4.0.1 and 5.x.
Edge Gateway for Linux
16 Ottobre 2025
Versione più recente: 4.18.0.0
- Update to runtime SDK V3.5 SP21 Patch 3
- Deploy Tool: Improved Usability - Information over missing dependencies
Code Generator LoongArch64
09 Ottobre 2025
Versione più recente: 1.0.2.0
Fixes issues with exception handling in IEC code. This is required to resolve issues with using OPC UA and BACnet on devices with LoongArch CPUs.
Scripting
08 Ottobre 2025
Versione più recente: 4.2.0.0
This version contains bug fixes and some small additions to existing scripting drivers.
OPC DA Server SL
25 Settembre 2025
Versione più recente: 3.5.21.30
This version contains mainly bug fixes and some improvements in various product areas.
Control RTE SL
25 Settembre 2025
Versione più recente: 3.5.21.30
This version contains mainly bug fixes and some improvements in various product areas.
HMI SL
25 Settembre 2025
Versione più recente: 3.5.21.30
This version contains mainly bug fixes and some improvements in various product areas.
Control Win SL
25 Settembre 2025
Versione più recente: 3.5.21.30
This version contains mainly bug fixes and some improvements in various product areas.
Development System V3
25 Settembre 2025
Versione più recente: 3.5.21.30
This version contains mainly bug fixes and some improvements in various product areas.
Installer
23 Settembre 2025
Versione più recente: 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
Application Composer
15 Settembre 2025
Versione più recente: 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 Settembre 2025
Versione più recente: 4.3.0.0
Maintenance release with bug fixes.
CFC
09 Settembre 2025
Versione più recente: 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
String Libraries
23 Luglio 2025
Versione più recente: 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 Luglio 2025
Versione più recente: 4.0.2.0
Contains a fix for issues with the TEST_AND_SET operator not working reliably.
Code Generator Cortex M3
14 Luglio 2025
Versione più recente: 4.0.2.0
Issues with jumps in very large POUs on ARM Cortex targets are fixed.
Static Analysis
18 Giugno 2025
Versione più recente: 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.
Ladder
23 Maggio 2025
Versione più recente: 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 Maggio 2025
Versione più recente: 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.
Redundancy
24 Aprile 2025
Versione più recente: 4.2.0.0
Update with improvements and bug fixes!
Edge Gateway for Windows
18 Marzo 2025
Versione più recente: 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 Marzo 2025
Versione più recente: 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 Gennaio 2025
Versione più recente: 4.6.0.0
This version contains bug fixes and minor improvements.
Git
15 Gennaio 2025
Versione più recente: 1.7.0.0
Rilascio di manutenzione contenente correzioni di bug e miglioramenti dell'usabilità.
Library Documentation Support
25 Novembre 2024
Versione più recente: 4.6.0.0
This version contains bug fixes and minor improvements.
UML
23 Luglio 2024
Versione più recente: 4.4.0.0
Last maintenance release before start of the service phase.
Test Manager
05 Ottobre 2023
Versione più recente: 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 Ottobre 2024
Versione più recente: 4.6.2.0
Maintenance release
SFC
19 Dicembre 2023
Versione più recente: 4.3.0.0
This version contains bug fixes and improvements.
Package Designer
19 Giugno 2024
Versione più recente: 4.2.0.0
This version contains several bug fixes and minor improvements.
Memory Tools
25 Aprile 2024
Versione più recente: 4.1.0.0
The usage of the memory tools is supported for core dumps.
Library Dependency Inspection
26 Settembre 2024
Versione più recente: 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 Febbraio 2023
Versione più recente: 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 ARM64
23 Maggio 2023
Versione più recente: 4.0.1.0
Improved support for Clang / LLVM EABI
Code Generator ARM
24 Maggio 2023
Versione più recente: 4.0.3.0
Improved support for Clang / LLVM EABI.
RISC Front End
30 Gennaio 2024
Versione più recente: 4.0.2.0
Fixed issues in certain cases when using pack_mode attribute on ARM based devices.
Profiler
09 Ottobre 2023
Versione più recente: 2.2.0.0
Application Composer Single License
05 Ottobre 2023
Versione più recente: 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".