Since the mid 1990s, substantial efforts have been made to standardize programming in all areas of industrial control. The increasing abundance of low-cost programmable logic controllers or PLCs has ...

IEC 61131-3 is the third part of the IEC 61131 standard that establishes a standardized programming interface for Programmable Logic Controllers. It defines five programming languages: Ladder Diagram ...

A family of programming languages for programmable logic controllers (PLCs). Of the three graphical and two textual languages, ladder logic (see example below) was the first language and widely used.

The software is fully compliant with the IEC 61131-3 open programming standard, across the entire suite of languages, data types and operators. As a member of the CoDeSys Automation Alliance, the ...