or of bool

I have 2 variables:

V is an array of 50 bool

T = V[1] or V[2] or V[3] or.....v[50]

Is it possible to use SCL for that function? And how?

Thanks

Hi aleb2, I don't know of any built-in functions that work on arrays, but you can loop through it and stop if you reach a true value:

FOR i:= 1 TO 50 BY 1 DO
     IF V[i]=true THEN
          Out:=true;
          EXIT;
     ELSE
          Out:=false;
     END_IF;
END_FOR;

Where i is an integer used for the array index, and Out is true if any value in the array is true, and false if all the values are false.

This is a short circuit or, if you find a true value at, for example: index 28, it doesn't matter what values are in the rest of the array, as the or gate will be true because of that one.

I hope this can help you towards a solution :).

Hello aleb2,

if you use a 1200 or 1500 you can also use the function LGF_Compare_Variant.

You can find this function here:

https://support.industry.siemens.com/cs/document/109479728/library-of-general-functions-(lgf)-for-step-7-(tia-portal)-and-s7-1200-s7-1500?dti=0&lc=en-WW

You need "only" a second Array to compare.

I hope this is helpful.

regards
CaOd

Thanks very much! for advise and library, i got it