V2.3.9 can program any controller that has a compatible runtime system, ranging from very small 8‑bit devices (64 kB flash) up to powerful industrial PCs. However, many modern controllers are only supported by V3.5. Before committing to a V2.3 project, check with your hardware vendor whether a V2.3 TSP still exists for your device.
, your best legal path is to contact CODESYS GmbH support or your original equipment vendor with your license information.
: Minimum 466 MHz processor, 128 MB RAM, and 300 MB hard drive space. codesys 2.3.9 download
CODESYS 2.3.9 requires ".trg" files to talk to specific PLC models. Once the main IDE is installed, run the InstallTarget utility (found in your installation directory) to import the hardware profiles provided by your PLC manufacturer. Running CODESYS 2.3.9 on Windows 10 and Windows 11
| Requirement | Details | |-------------|---------| | | Windows XP, Vista, 7 (32-bit). Windows 10/11 64-bit requires a virtual machine (e.g., VirtualBox or VMware) running Windows 7 32-bit. | | Target PLCs | Any CODESYS V2.3 runtime (e.g., Wago 750-841, Beckhoff BC/BX series, older Eaton XC). | | Programming Languages | IL, ST, FBD, LD, SFC (CFC is optional). | , your best legal path is to contact
Any specific (like CANopen or Modbus) you plan to configure.
Version 2.3.9 was never officially released for 64‑bit platforms of Windows Vista or Windows 7, and it does not support Windows 11 natively. However, many users have successfully installed it on 64‑bit Windows 10 by running the installer in compatibility mode (Windows XP SP3 or Windows 7). Once the main IDE is installed, run the
For new users seeking a download, always verify the of the installer if you find it on third-party sites. Better yet, contact your local PLC distributor—they usually have the final official copies of 2.3.9 saved internally for customer support.
If text is cut off or missing in the visualization screens, the computer you are using is likely missing legacy Windows fonts (such as MS Sans Serif variants) or has Windows display scaling set above 100%. Set your display scaling back to 100% to fix graphic misalignment. Summary Checklist for a Successful Setup To ensure a smooth deployment, follow these exact steps:
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.
Right-click the Setup.exe file and select Run as Administrator .
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