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Structuring with SFC
do's & don'ts
V1.0 Official Release


PLCopen Safety
Part 1
Version 2.0 now released


Information Model
V1.01.09 RfC


PLCopen starts
new working group
on Industry 4.0










PC2 - Training


NEW: PLCopen Structuring with SFC doís and doníts, Version 1.0 official release

Creating PLCopen Compliant Libraries, v 1.0 available

PLCopen Coding Guidelines v 1.0 available


Under the PLCopen Promotional Committee 2 resides the topic related to training.

Since 2013 this includes the activities related to PLCopen Software Construction Guidelines. The goal of this new working group is to provide the definition of rules, coding patterns and guidance and how to use them in Industrial Automation focused to the IEC 61131-3 / PLCopen environments.

For this it contains several subgroups all with a different area. Activities hereunder include:

  • Coding Guidelines (including naming conventions and rules)
  • Creating PLCopen compliant Function Blocks
  • Structuring and decomposition via SFC (doís & doníts)
  • Software quality issues and software consistency

The aim is to define a set of rules and to provide PLCopen proposals on how these rules can be used. Nowadays large automation companies have their own rules but many mid-size companies or IEC 61131-3 beginners are very interested in using PLCopen guidelines. Such guidelines will have a great impact in expanding IEC 61131-3 further in the world.
These rules will be very useful to train users and can be a good basis for universities to help them teach IEC 61131-3 programming more efficiently.

The first result of this working group, the document Coding Guidelines version 1.0, was released in April 2016. You can download the PLCopen Coding Guidelines document as .pdf. We would appreciate your comments and ideas on it, especially on the usability for you.

A second document Creating PLCopen Compliant Libraries version 1.0 was released in May 2017.

The third document PLCopen Structuring with SFC doís and doníts, is now released (July 2018) as version 1.0.

Check here for more information on Creating PLCopen Compliant Libraries and for PLCopen Structuring with SFC do's and don'ts.


In addition PLCopen published guidelines for certified training centers.


PLCopen does not provide hands-on training courses on IEC 61131-3 due to possible conflicting interests with its members. In order to guide potential users to relevant IEC 61131-3 courses, including the concepts and languages, PLCopen with its members defined training guidelines, together with a set of slides.

The PLCopen PC2 Technical Paper specifies the basic requirements for a PLCopen certified training course on IEC 61131-3.
View the list of training certified PLCopen members.

Check for downloads the subpage 'Downloads' and the subpage 'Introductions in Spanish & Portugese'.