Originally created by: fk5

Can CoDeSys do conditional variable type identification?

Example:
I have a scale function that takes in a REAL value and scales it to some new range, then outputs a REAL. But, sometimes I’m trying to scale an INT, or a DINT, or a BYTE or SINT, etc. how can I make this function automatically recognize the input type, do a xxx_TO_REAL, run my scale function, then do a REAL_TO_xxx, then output the result as an xxx instead of a REAL?

Any solution besides “make a different function for each variable type” would be awesome.

Thanks!

In this case I would use; INT_TO_REAL(your_var) or WORD_TO_REAL(your_var) etc.

Originally created by: scott_cunningham

Codesys V3 now supports the ANY_TYPE, which would work, but I don’t believe this is available on Codesys V2.3.

Originally created by: fk5

So, it works this way for using different inputs. That's good.
But, I also want it to output into the same type as whatever is connected.
Is this possible? (Example: I'd like to modify this function to work regardless if dd is a REAL, INT, BYTE, ...)

FUNCTION anyTestFunction : REAL
VAR_INPUT
in1: REAL := ANY_TO_REAL(in1);
in2: REAL := ANY_TO_REAL(in2);
in3: REAL := ANY_TO_REAL(in3);
END_VAR

anyTestFunction := in1 + in2 + in3;

PROGRAM PLC_PRG
VAR
aa: INT := 2;
bb: REAL := 2.1;
cc: BYTE := 3;
dd: REAL;
END_VAR

dd := anyTestFunction(aa, bb, cc);
*************

Originally created by: scott_cunningham

You could return the ANY type, but then you would have to determine which type within the ANY type.

i do it by paralleling inputs and outputs in ver 2 so input is real and int same as output.