Having been patched and refined for decades, version 2.3.9 is arguably one of the most stable PLC programming environments ever created. Where to Find the CODESYS 2.3.9 Download
The CODESYS Group (3S-Smart Software Solutions) maintains an archive. You may need to create a free account on the or their customer portal to access "Legacy" downloads. Look for the "CODESYS V2.3" package, which usually includes the latest service pack (SP). 2. PLC Manufacturer Websites (Recommended) codesys 2.3.9 download
Once you have downloaded the setup file (usually an .exe or a zipped ISO), follow these steps: Having been patched and refined for decades, version 2