Keywords

Keywords are unique character combinations used as individual syntactic elements. Uppercase/lowercase does not matter. Keywords must not be used as any kind of user names.

Reserved keywords are:

• names of elementary data types
• names of standard functions
• names of standard function blocks
• names of input parameters of standardfunctions
• names of input and output parameters of standard function blocks

Examples:

FOR, for, FALSE, TRUE, TIME#, BOOL, INT, AT, VAR, RETAIN, CONSTANT, FUNCTION, END_FUNCTION, FUNCTION_BLOCK, PROGRAM