IEC 61131-3

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 by the IEC; the current (fourth) edition was published in May 2025.

Part 3 of IEC 61131 deals with basic software architecture and programming languages of the control program within PLC. The current edition defines three graphical and one textual programming language standards:

Previous editions also included:

  • Instruction list (IL), textual. Deprecated in the third edition (2013) and removed in the fourth edition (2025).
This article is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.