As the product is discontinued, recovering a lost license will be very difficult. Your best course of action is to contact the original equipment vendor (OEM) of your controller.
Installing 2.3.9 on Windows 10 or 11 may present challenges. Here are solutions:
IFM provides a robust version of the software tailored for their controllers. CODESYS V2.3.9.42 and libraries link
Check out our next post on configuring the communication gateway for legacy controllers. codesys 2.3.9 download
TwinCAT 2 is built on the CoDeSys 2.3 architecture. If you are working with older Beckhoff PLCs, download TwinCAT 2 from the Beckhoff website instead of the generic CoDeSys installer. Eaton / Moeller: Look for XSoft-Professional .
: CODESYS V2.3 is a 32-bit application. While it runs on modern Windows systems, you may need to run it in compatibility mode depending on your specific OS version.
If the installer fails, right-click the installer, go to Properties -> Compatibility , and set it to run in compatibility mode for Windows 7 . As the product is discontinued, recovering a lost
Many automation brands provide customized versions of CODESYS 2.3.9 packed with their specific target files (hardware definitions). If you are using specific hardware, download the software directly from: Look for WAGO-I/O-PRO (based on CODESYS 2.3). Eaton: Look for XSoft-CoDeSys .
Downloading CODESYS 2.3.9 isn't a step backward; for many, it’s a necessary step toward keeping the world’s infrastructure moving. It’s a testament to the "If it ain't broke, don't fix it" philosophy of industrial engineering.
CODESYS 2.3.9 is an older version of the popular IEC 61131-3 programming system for industrial controllers. This version was widely used with legacy PLCs from manufacturers like Wago, Beckhoff, Festo, and others. Here are solutions: IFM provides a robust version
If you have a legacy 2.x project, CODESYS 3.5 can automatically attempt to convert it. For those needing a more automated migration path, community tools like the codesys-migrator (a command-line tool for moving V2.x projects to V3.5) also exist.
Extremely fast code execution and small memory footprint on the PLC.
