To download and install CODESYS 2.3.9, follow these steps:
CODESYS 2.3.9 is legacy software (released around 2010-2013). It is not compatible with Windows 10/11 64-bit by default and is no longer actively developed. Use it only for maintaining existing equipment, not for new projects. codesys 2.3.9 download
⚠️ Many untrusted websites offer “cracked” or “free” versions. Always download from the official CODESYS archive to avoid malware. A free license for 2 hours of runtime (for testing) is included; full licenses must be purchased from your PLC manufacturer. To download and install CODESYS 2
Before jumping into the download, it’s worth understanding why this specific version is still sought after: Before jumping into the download, it’s worth understanding
: 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.
Because version 2.3 is an older environment, you should download the version specific to your hardware brand to ensure the correct (device descriptions) and libraries are included. Brand-Specific Portals :
: 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