Instructions in IL

The programming language Instruction List (IL) is defined by the IEC 61131 standard. It includes the instructions:

LD: LOAD       ST: STORE       S: SET       R: RESET

the set of basic logic functions:

AND       OR       XOR: eXclusive OR

and their complement:

LDN: LOAD NOT       ANDN: AND NOT       ORN : OR NOT

To the logic functions are associated with parentheses:

AND(       OR(       XOR(
)          )         )

Comments can be added after the symbol: *