That standard defines the Sequential Function Chart (SFC) language, used to structure the internal organization of a program, as well as four interoperable programming languages: Instruction List, ...

Concurrently, novel approaches to verifying function block diagrams have emerged, harnessing higher-order logic theorem proving and co-induction methods to establish design equivalence under ...

THE use of function blocks for programming of programmable logic controllers (PLCs) is gaining wider acceptance. Rather than the classic “contact and coil” representation of ladder diagram or relay ...