– typically around 200–300 MB.
This environment is perfect for learning the IEC languages, prototyping logic, and training new technicians—all for the price of $0.
Yes, (the legacy version) is available as a free download from the official CODESYS Store or archive. However, "free" means different things for different use cases. codesys 2.3 free version
Many professional institutions utilize the free version of CODESYS 2.3 to provide hands-on experience in industrial automation. For example:
is a widely-used development environment for industrial controller applications, complying with the international standard IEC 61131-3. While the newer CODESYS V3.5 is the current flagship, version 2.3 remains essential for maintaining legacy systems and is often used as a free educational tool in industrial automation courses. Core Features of CODESYS 2.3 – typically around 200–300 MB
Before diving into the "free" aspect, it is essential to understand what CODESYS 2.3 is. Released in the early 2000s, CODESYS 2.3 is an integrated development environment (IDE) designed specifically for programming PLCs.
⚠️ : CODESYS 2.3 is obsolete (end-of-life since ~2012). It works on Windows 7, 8, 10, and even 11 (sometimes with compatibility settings). No updates or security patches are provided. However, "free" means different things for different use
The CODESYS 2.3 IDE (Programming Software) is free to download, install, and use for writing, editing, and simulating code. You do not need to pay for a license to create a project.
CODESYS 2.3 was designed for Windows XP and Windows 7. While it can run on Windows 10 or 11, you will encounter: