欧姆龙的DFB以及说明哪里有下载?

Under := FALSE;
Over := FALSE;
raw_int := int_Raw;
IF Clamp = TRUE THEN
   IF int_Raw < int_Raw_Min THEN
       raw_int := int_Raw_Min;
       Under := TRUE;
       ELSE IF int_Raw > int_Raw_Max THEN
       raw_int := int_Raw_Max;
       Over := TRUE;
       END_IF;
   END_IF;
ELSE IF Clamp = FALSE THEN
       IF int_Raw < int_Raw_Min THEN
       Under := TRUE;
       ELSE IF int_Raw > int_Raw_Max THEN
           Over := TRUE;
       END_IF;
       END_IF;
   END_IF;
END_IF;
m := (flt_Scaled_Max - flt_Scaled_Min) / (INT_TO_REAL(int_Raw_Max) - INT_TO_REAL(int_Raw_Min));
b := flt_Scaled_Max - m * INT_TO_REAL(int_Raw_Max);
Scl_Real := m * INT_TO_REAL(raw_int) + b;
Scl_Int := REAL_TO_INT(Scl_Real);