 | This article relies largely or entirely on a single source. (March 2017) |
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.[2]
Part 3 of IEC 61131 deals with basic software architecture and programming languages of the control program within PLC. It defines three graphical and two textual programming language standards:
- Ladder diagram (LD), graphical
- Function block diagram (FBD), graphical
- Structured text (ST), textual
- Instruction list (IL), textual (deprecated in 3rd edition of the standard[3])
- Sequential function chart (SFC), has elements to organize programs for sequential and parallel control processing, graphical.
- ^ Stevic, Tom (5 May 2017). "A very short history of PLC programming platforms". Control Design. Retrieved 11 September 2021.
- ^ "IEC 61131-3:2013". International Electrotechnical Commission (IEC). Retrieved 11 September 2021.
- ^ PLCopen: The third edition of IEC 61131-3