Method for checking the syntax of an instruction list...

Details Method for checking the syntax of an instruction list... Method for checking the syntax of an instruction list...

G - Physics

06

F

354/225

G06F 9/455 (2006.01) G05B 19/05 (2006.01) G06F 9/30 (2006.01) G06F 9/44 (2006.01) G06F 9/445 (2006.01)

Patent

CA 2027333

30-CF-1022 ABSTRACT OF THE DISCLOSURE A method is provided by which a programmable logic controller checks each statement of an instruction list (IL) program to determine if any such statement or the order of statements violates one of a set of syntax rules which are stored in a memory in the controller. If a rule violation is found, an error indication is generated to signify that the particular IL program under test by the controller can not be accurately converted or translated into a relay ladder diagram. However. if no rule violation is found by the controller, then the controller accepts the IL program .

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