Because CODESYS 2.3 was rebranded and packaged by hardware vendors, their support portals are the safest sources:
| Manufacturer | Model Example | Download Section Name | |--------------|---------------|------------------------| | Wago | 750-841, 750-881 | “WAGO-I/O-PRO CAA” (based on CODESYS 2.3.9) | | Beckhoff | CX1020, BX9000 | “TwinCAT 2 PLC Control” (identical to CODESYS 2.3.9) | | Festo | FEC, CECX | “Festo Soft PLC – CODESYS V2.3” | | Eaton | XC-CPU201 | “Eaton CODESYS 2.3 Runtime” | | Turck | BL20, BL67 | “Turck CODESYS 2.3 Programmer” |
Example direct search: Go to Wago’s download center → Filter by software → “WAGO-I/O-PRO CAA V2.3.9.xx (full installer)”.
As a last resort, the Internet Archive has snapshots of the old CODESYS FTP server. Use with caution – verify file hashes (MD5/SHA256) if available.
Because 2.3.9 was often embedded, your PLC manufacturer (e.g., WAGO, Turck, IFM) likely included a branded copy on the original Software CD/DVD that shipped with the controller. These versions are locked to that specific hardware runtime but function identically to the standard IDE.
The primary repository for software is the CODESYS Store.
CODESYS 2.3.9 is the final, most mature version of the CODESYS V2.3 family. Released in the late 2000s, it represents the end of an era before the architectural shift to CODESYS V3. This version is renowned for:
Many engineers keep a Windows 7 or Windows 10 virtual machine with CODESYS 2.3.9 specifically to service older machines that cannot be upgraded to V3 due to hardware limitations or certification costs.
Crucial Note: As of the last decade, the official CODESYS Store (store.codesys.com) has largely archived or removed public direct links for 2.3.9 in favor of the modern 3.5 releases. Furthermore, Beckhoff (who used TwinCAT 2.x, which is binary compatible) has shifted entirely to TwinCAT 3.
If you require 2.3.9, you generally have two legitimate sources:
You can download CODESYS V2.3 (specifically version ) through several official manufacturer channels, as the older V2.3 branch is often bundled with specific hardware support. Official Download Sources Manufacturer Portals
: Since V2.3 is often hardware-specific, it is best retrieved from vendor sites: CODESYS Version 2.3.9.35 for their programmable gateways. : Provides a dedicated CODESYS 2.3 software package for ecomatmobile controllers. WAGO/Other Vendors codesys 2.3.9 download
: Check the support section of your specific PLC manufacturer, as they typically provide a customized version with their specific targets. CODESYS Store : While the CODESYS Store primarily focuses on
, it remains the primary official hub for all development system downloads. TURCK India Automation Pvt. Ltd. Solid Principles & Modern Development The "solid report" in your query likely refers to applying SOLID principles within the IEC 61131-3 environment. Object-Oriented Design
: While V2.3 has limited object-oriented capabilities compared to V3.5, developers still advocate for SOLID (Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion) to improve PLC code maintainability. Expert Resources : Authors like Stefan Henneken have published papers specifically on using SOLID principles with IEC 61131-3 to modernize industrial programming. System Requirements for V2.3.9.x : Windows XP, 7 (SP1+), 8, and 10 (32/64 bit).
: Minimum 466 MHz processor, 128 MB RAM, and 300 MB hard drive space.
: If you are starting a new project, CODESYS V3.5 is the current standard and offers much better support for modern programming practices and security. CODESYS Store target file (H-file) for a certain PLC model to use with version 2.3.9? CODESYS V2 - ОВЕН
Codesys 2.3.9 Download Review: A Comprehensive Overview
Introduction
Codesys is a popular software framework used for developing control systems, particularly in the industrial automation sector. The latest version, Codesys 2.3.9, has been making waves among developers and engineers. In this review, we'll provide an informative overview of the Codesys 2.3.9 download, its features, and what you can expect from this version.
What is Codesys?
Codesys is a software framework that enables the creation of control systems for various industries, including industrial automation, automotive, and medical devices. It provides a comprehensive set of tools and libraries for developing control applications, including programming, testing, and debugging.
What's New in Codesys 2.3.9?
The Codesys 2.3.9 version comes with several improvements and new features, including:
Key Features of Codesys 2.3.9
Some of the key features of Codesys 2.3.9 include:
Downloading and Installing Codesys 2.3.9
To download Codesys 2.3.9, follow these steps:
System Requirements
Before downloading and installing Codesys 2.3.9, ensure your system meets the minimum requirements:
Conclusion
Codesys 2.3.9 is a robust and feature-rich software framework for developing control systems. With its improved performance, new features, and bug fixes, this version is a significant upgrade from previous ones. If you're a developer or engineer working with control systems, Codesys 2.3.9 is definitely worth checking out. Download it today and experience the benefits of this powerful software framework.
Rating: 4.5/5
Recommendation
We highly recommend Codesys 2.3.9 to:
Disclaimer
This review is not affiliated with or endorsed by the Codesys company. The information provided is based on publicly available data and our own research.
The CODESYS 2.3.9 download is primarily available as the legacy version of the CODESYS Development System, widely used for programming PLCs from manufacturers like WAGO and Festo. While newer versions (V3.5+) are now standard, the V2.3.9 series remains critical for maintaining older industrial hardware. Download Options
Official Source: The CODESYS Store provides free access to the development environment, though you may need to search the archive section for specific older versions like 2.3.9.
Manufacturer Portals: Since V2.3 is often hardware-specific, it is frequently downloaded via manufacturer support pages like WAGO or Eaton (XSoft). "Interesting Review" & Community Insights
User experiences highlight several quirks regarding stability and versioning:
The "Library Overwrite" Trap: A critical community "review" warning emphasizes caution when upgrading within the 2.3.9 series. Because CODESYS V2.3 libraries often keep the same names across revisions, an update can overwrite stable old libraries with newer versions that might contain bugs, potentially breaking existing POUs (Program Organization Units).
Access Rights Shifting: Users have noted that between versions like 2.3.7 and 2.3.9.4, "Read Only" access rights for visualizations became more restrictive, sometimes locking technicians out of interactive buttons they could previously use.
Multi-Developer Synchronization: A common complaint involves "login without download" issues when multiple developers work on the same project stored on a server. The IDE's reliance on timestamps can trigger a mandatory re-download even if no code changed, simply because the project was saved on a different local machine.
Stability Warning: Long-time users (8+ years) have reported rare but catastrophic crashes in 2.3.9 where project files became unreadable, making external backups mandatory. Key Specifications for V2.3 XSoft-Codesys 2.3.9 Crashed, I can't load my project now Because CODESYS 2