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Programming languages - Overview

This chapter presents details on the syntax, structure and use of the declarations and statements supported by the KAS IDE"Integrated development environment" An integrated development environment is a type of computer software that assists computer programmers in developing software. IDEs normally consist of a source code editor, a compiler and/or interpreter, build-automation tools, and a debugger application language.

 

Below are the available programming languages of the IEC"International Electrotechnical Commission" IEC is a not-for-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies 61131-3 standard:

SFC: Sequential Function Chart
FBD: Function Block Diagram
FFLD: Free Form Ladder Diagram
ST: Structured Text
IL: Instruction List

Use of ST instructions in graphic languages

You have to select a language for each program or User-Defined Function BlockA function block groups an algorithm and a set of private data. It has inputs and outputs. of the application.

 

Refer also to the following pages about the IEC 61131-3 programming languages:

Program organization units
Data types
Structures
Variables
Arrays
Constant expressions
Conditional compiling
Handling exceptions

 

SFC Language

FBD Language

IL Language

ST Language

ST Expressions in Diagrams

FFLD Language

PLC Standard Libraries

PLC Advanced Libraries


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