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Release CODESYS V3.5 SP19

CODESYS V3.5 SP19 was released and

is now available for download in the CODESYS Store.

The associated release documents can be downloaded under CODESYS Release & Teaser Notes.

An overview of new features and improvements can be found here.

The new, always up-to-date CODESYS Release Plan with all important release dates is now available.

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
    *IL was marked as obsolete by PLCopen®, the IEC 61131-3 user organization, and is therefore no longer maintained. If required, IL can be enabled for use.
  • 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 online features for debugging, 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

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
  • Encapsulation of object-oriented program code in libraries with functional call interfaces: Convenient provision of, for example, system functions or special algorithms for PLC programmers without knowledge of OOP
  • 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.


The CODESYS Development System can be downloaded for free from the CODESYS Store.

The setup contains the development environment and a demo version of the SoftPLC CODESYS Control Win SL.


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

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Automation Platform

Development platform for automation tools based on the IEC 61131-3 programming tool CODESYS Development System for the Extension of the CODESYS Development System

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Professional Developer Edition

Professional add-ons to increase productivity: Functionality known from high-level language programming, integrated in the IEC 61131-3 programming tool CODESYS.

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Application Composer

Engineering application software according to IEC 61131-3 for automation systems

EMEA Technology EMEA Technology EMEA Technology EMEA Technology