LIMIT

Overview

IEC selection operator performing a limiting function.

OUT := LIMIT(Min, IN, Max) means:
OUT := MIN (MAX (IN, Min), Max)

Max is the upper and Min the lower limit for the result. Should the value IN exceed the upper limit Max, LIMIT will return Max. Should IN fall below Min, the result will be Min.

IN and OUT can be any type of variable.

Example in IL

Result is 80

LD     90
LIMIT  30     ,
       80
ST     Var1

Example in ST

Var1:=LIMIT(30,90,80); (* Result is 80 *);