The comprehensive software suite for automation technology
Independent of device manufacturers
The basis:
- The "CODESYS Development System" programming tool, which implements the international IEC 61131-3 standard
- The control software ("PLC runtime system" or "SoftPLC" or "virtual PLC") for different device platforms
With CODESYS, you can freely select the optimum hardware for your automation application. Many classic automation providers have already implemented CODESYS. Or you can use standard device platforms on which you simply install or deploy the appropriate control software. With virtual controllers, you can even use powerful IT hardware for control and thus reduce hardware costs.
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CODESYS in Use
CODESYS in factory automation, mobile machinery, the energy industry, embedded devices, process and building automation.

Lissmac & Christ
Flexibility and independence with the WebVisu from CODESYS
With CODESYS, Lissmac was able to achieve maximum independence from device manufacturers. The development of a new user interface based on Lissmac CI was very simple. With WebVisu, diagnostic data can be retrieved globally and in real time via remote access.
Products used:
- CODESYS Engineering
- CODESYS Visualization
CODESYS Ecosystem - the heart of your automation solution
CODESYS Releases
SFC
September 10, 2026
Latest version: 4.5.0.0
Error Analysis & Diagnostics
- Improved Diagnostic Accuracy with ErrorAnalyzation: Corrected error reporting for alternative branches and multiple transitions to ensure precise fault localization in complex logic.
Editor & Workflow Efficiency
- Enhanced Refactoring Capabilities: Improved refactoring functionality for steps and FB instances, including calls within FBD actions.
- Optimized Editor Usability: Improved user experience through optimized input field scaling and horizontal scrolling.
System Stability & Compliance
- Corrected State & Setting Management: Fixed issues regarding the persistence of project settings and transition state management during editor sessions.
Code Generator ARM64
August 24, 2026
Latest version: 4.0.2.0
Maintenance release
Fixes sporadic issues with the atomicity of the TESTANDSET operator.
Code Generator ARM
August 24, 2026
Latest version: 4.0.4.0
Fixes sporadic issues with the atomicity of the TESTANDSET operator.
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