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EVS-EN 61131-3:2013

Programmable controllers - Part 3: Programming languages (IEC 61131-3:2013)

General information
Valid from 04.06.2013
Base Documents
IEC 61131-3:2013; EN 61131-3:2013
Directives or regulations
None
Standard history
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This Part of IEC 61131 specifies syntax and semantics of programming languages for program mable controllers as defined in part 1 of IEC 61131. The functions of program entry, testing, monitoring, operating system, etc., are specified in Part 1 of IEC 61131. 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). An additional set of graphical and equivalent textual elements named Sequential Function Chart (SFC) is defined for structuring the internal organization of programmable controller programs and function blocks. Also, configuration elements are defined which support the installation of programmable controller programs into programmable controller systems.
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