IEC 61131-3 is the third part (of 10) of the international standard IEC 61131 for programmable logic controllers. It was first published in December 1993 [1] by the IEC; the current (fourth) edition was …

This document specifies the syntax and semantics of a unified suite of programming languages for programmable controllers (PCs). This suite consists of the textual language structured text (ST), and …

IEC 61131-3 not only describes the PLC programming languages themselves, but also offers comprehensive concepts and guidelines for creating PLC projects. The purpose of this section is to …

Jul 30, 2007 · By using IEC-61131-3, a programmer can develop a control algorithm for a particular brand of controller, and import that same program to another brand with minimum modifications, …

Mar 25, 2021 · IEC 61131-3 defines the basic structure and elements of all programming languages for programming controllers. This allows PLCs to be programmed using multiple languages.

La présente partie de l’IEC 61131 spécifie la syntaxe et la sémantique des langages de programmation utilisés pour les automates programmables tels que définis dans l’IEC 61131-1.

IEC 61131-3 is the first real endeavor to standardize programming languages for industrial automation. With its worldwide support, it is independent of any single company.

Jun 26, 2025 · An introductory guide to the widely-used IEC 61131-3 standard that defines the most popular PLC programming languages in today’s industrial automation technology.

Sep 14, 2015 · Learn how IEC 61131-3 works in this comprehensive overview. The first vendor independent standardized programming language for industrial automation.

IEC 61131-3:2025 specifies the syntax and semantics of programming languages for programmable controllers as defined in IEC 61131-1. This document specifies the syntax and semantics of a unified …