Function - Calculates a power.
IN : REAL
Real value
EXP : DINT
Exponent
Q : REAL Result: IN at the 'EXP' power
In LD language, the operation is executed only if the input rung (EN) is TRUE. The output rung (ENO) keeps the same value as the input rung. In IL, the input must be loaded in the current result before calling the function. The exponent (second input of the function) must be the operand of the function.
Q := EXPT (IN, EXP);
(* The function is executed only if EN is
TRUE *)
(* ENO keeps the same value as EN *)
Op1: LD IN
EXPT EXP
ST Q (* Q
is: (IN ** EXP) *)