IEC 61131 is an IEC standard for programmable controllers. It was first published in 1993; [1] the current (third) edition dates from 2013. [2] It was known as IEC 1131 before the change in numbering system by IEC.

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 (third) edition was published in February 2013.

2021年3月25日 · IEC 61131 is the standard for programmable controllers. It has ten parts covering general information, equipment requirement, user guidelines, communication protocols, safety, fuzzy control programming, and many other aspects regarding programmable controllers.

IEC 61131-3 pro-vides five programming languages (three of which have graphical representation) for application-oriented formulation of the control task. As the method of programming differs strongly between these languages, they are suitable for different control tasks and application areas.

IEC 61131-1:2003 applies to programmable controllers (PLC) and their associated peri-pherals such as programming and debugging tools (PADTs), human-machine interfaces (HMIs), etc., which have as their intended use the control and command of machines and industrial processes.

A 15% discount of the total catalogue price is included.This pack contains the following: IEC 61131-1:2003 IEC 61131-2:2017 IEC 61131-3:2013 IEC TR 61131-4:2004 IEC 61131-5:2000 IEC 61131-6:2012 IEC 61131-7:2000 IEC TR 61131-8:2017 IEC 61131-9:2022 IEC 61131-10:2019

This part of IEC 61131 specifies the syntax and semantics of a unified suite of programming languages for programmable controllers (PCs). This suite consists of two textual languages, Instruction List (IL) and Structured Text (ST), and two graphical languages, Ladder Diagram (LD) and Function Block Diagram (FBD).

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.

This part of IEC 61131 specifies the syntax and semantics of a unified suite of programming languages for PLCs. These consist of textual languages, IL (Instruction List) and ST (Structured Text), and two graphical languages, LD (Ladder Diagram) and FBD (Function Block Diagram).

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 suite of programming languages for programmable controllers (PCs).