This is perfect for:
– not V3.
However, "old" does not mean "useless."
: Includes a built-in tool to create Human Machine Interface (HMI) screens for monitoring and controlling PLC processes.
Training programs highlighted by also emphasize the software for learning basic electronics and computer-controlled automation. Getting Started To begin using the software: codesys 2.3 free version
The remains one of the most widely deployed legacy Integrated Development Environments (IDEs) for industrial automation. Compliant with the IEC 61131-3 standard , this software allows engineers to program programmable logic controllers (PLCs) from numerous automation brands.
If your hardware vendor (e.g., a small Chinese PLC maker) only provides a 2.3 runtime, you can use the free IDE to develop the entire PoC in simulation. Only when you move to production do you buy the runtime key. This is perfect for: – not V3
| Limitation | Details | |------------|---------| | | To run on real hardware, most PLCs require a paid runtime key. | | Target visualization | Often locked or time-limited in free mode. | | Fieldbuses (CANopen, Profibus, etc.) | Require separate licenses. | | SoftMotion (motion control) | Paid add-on. | | Official support | Community forums only. |
⚠️ : CODESYS 2.3 is obsolete (end-of-life since ~2012).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. Getting Started To begin using the software: The
While the IDE is free, the Runtime —the part that makes a physical PLC run—is not free. You must purchase a runtime license from your PLC hardware manufacturer. Furthermore, some advanced features (like certain fieldbuses or code obfuscation) require a paid add-on license.