CODESYS Development System

IEC 61131-3 applications professionally engineered by technicians and software engineers – from LD to UML in one extendable platform.

CODESYS Development System – the IEC 61131-3 Programming Tool for the Industrial Controller and Automation Technology Sector

Creation of Professional IEC 61131-3 Controller Applications with a Host of Standard Features.

  • All editors of the IEC 61131-3 (FBD, LD, IL, ST, SFC) plus different variants of the standard editors
  • Powerful and proven library concept for the reutilization of application
  • Project configuration through wizards
  • Input assistance for the input and configuration of data
  • User-friendly programming with mouse and keyboard in all IEC 61131-3 editors
  • Integrated compilers for many different CPU platforms optimize the controller performance.
  • Comprehensive project comparison, also for graphic editors
  • Extensive debugging and online features for the fast optimization of the application code and to speed up testing and commissioning
  • Numerous security features for the protection of the source code and for safeguarding the operation of the controller
  • Programmable devices from different manufacturers
  • Extendibility and adaptability of the user interface without leaving the framework
  • Transparent internal structures of the development tool and the available components
  • Many seamlessly integrated tools for different kinds of automation tasks
  • Download a free of charge trial version of CODESYS from the CODESYS Store

Object-orientation in the IEC 61131-3 tool – boost your output!

  • Real object-oriented programming (OOP) fully compliant with the 3rd Edition of the IEC 61131-3 Standard in all available editors without any additional tools
  • Inheritance of POUS to similar application parts to reduce development time and errors
  • Object-orientation is not a must: Functional and object-oriented programming can be used and mixed as required.


CODESYS Library Management

Published 03.09.2015
CODESYS contains everything for a successful library management including online documentation. Several benefits of good documentation such as time saving, reduced resources, and need for support.

For topics and dates of the next webinars go to News, Events & Fairs.

More interesting clips with tips and tricks for CODESYS Users at

CODESYS brochures and information material

Professional Engineering of IEC 61131-3 Automation Projects
Version: 11/2019
pdf 2 MB
Overview: Features and Improvements of CODESYS V3.5 SP14
Version: V3.5.14.0
pdf 2 MB
Overview: Features and Improvements of CODESYS V3.5 SP13
Version: V3.5.13.0
pdf 604 KB
Overview: Features and Improvements of CODESYS V3.5 SP12
Version: V3.5.12.0
pdf 741 KB
Overview: Features and Improvements of CODESYS V3.5 SP11
Version: V3.5.11.0
pdf 1 MB
Overview: Features and Improvements of CODESYS V3.5 SP10
Version: V3.5.10.0
pdf 619 KB
Overview: Features and Improvements of CODESYS V3.5 SP9
Version: V3.5.9.0
pdf 1 MB