SIS function blocks > SIS Math Blocks > Logic Solver Calculation function block > Expressions in DeltaV SIS Software > Functions in Logic Solver Expressions

FRACT function

FRACT (x). Returns the fractional part of x. The result is positive if x is greater than or equal to zero. The result is negative if x is less than zero.

Syntax:

'external reference' := FRACT(Real value);

Example: 

VAR
   T63; T64; T17; T18; (* Temporary values *)
END_VAR;
T63 := .5;
T64 := 15.803;
T17 := FRACT(T63);
T18 := FRACT(T64);

The above example shows T63 set to the value of .5 and T64 set to the value of 15.803. T17 is set to the result of FRACT(T63), which is .5 and T18 is set to the result of FRACT(T64), which is .803.