NORM_X and SCALE-X in TIA Portal program V 15

Did you read the description for each instruction?

normalize a value (real or integer) between an LREAL value of 0.0 - 1.0.

Not so coincidentally, scaling of a normalized value to some range of values.

You see them rather often when scaling analog inputs into 0-100%, user units, engineering units, auxiliary units, or for converting normalized values to either metric or other measurement system.

Other uses like accepting a 0-100% control input from an HMI or other source and output the analog equivalent for 0-27648.

In SCL, you can pair them together in a long statement without needing an internal TEMP tag to carry the results of the NORM into the SCALE call.  Sometimes this is useful when I know in advance the scaling will not be used for more than 1 conversion.  If multiple potential scalings of the normalized value, like from

0-100% -> user units (like speed in 0-max rpm) 
       -> Analog Output (AO) (0-27648)
       -> Sinamics VFD output (0-16384)
       -> constrained AO
          (0-13824, for 0-5V device wired to 0-10V AO)

Hopefully you will learn to use the search feature available in these online forums to find many posts where norm-x/scale-x are mentioned to discover even more ways to use them that at times have surprised me in their unexpected use to solve interesting problems - without having to write custom FB/FC to handle some special conversion. 

AutoGen_1764790

What exactly are the NORM_X and SCALE-X functions V 15 in the TIA Portal program? In which applications are these functions commonly used?