IEC 61131-1 PDF

INTERNATIONAL. STANDARD. IEC. Second edition. Programmable controllers –. Part 1: General information. Automates programmables –. IEC applies to programmable controllers (PLC) and their associated peri-pherals such as programming and debugging tools (PADTs). The Norm DIN EN section 1 (IEC ) applies to programmable logic control in low voltage systems, in which the rated voltage of the network does.

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Choosing an Automation Platform: The part standard is an attempt to standardize programmable controllers.

Automation Platforms – IEC Compliance

Each of the 10 parts addresses a different part of the programmable controller. Standards are platform independent, which means that ideally, automation systems following the standard can be ported from one platform to another.

However, this is not always the case in practice because each automation vendor has special functions and tools that apply only to their hardware. At a basic level, though, a code base developed in one platform will work on another platform as long ic both conform to this standard.


Two of the most commonly known parts of this standard are part 3 and part 9. 611331-1 3 defines modern PLC programming languages: This part of standard details the elementary data types and the way that user data types are defined.

IEC – Wikipedia

Compliance with this standard means that data types are consistent across platforms. It means that an integer on platform A is the same size as an Integer on platform B.

These include Functions and Function Blocks. Part 8 of the standard is a technical report on how to put all the parts from Part 3 together. oec

This part is a software development guide using the standards from Part 3. Part 10 of the standard is still under development, but it describes an XML schema for exchanging programs according to Part 3, which would enable you to take your program from one platform to another without a problem.

Whatever automation platform you choose, it is important that it meets IEC Nearly all modern platforms conform to this standard in some way.


Using a system integrator company that knows this standard means that you will not be limited to any specific industrial automation platform and opens the possibilities of options.

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