Each I16 number in LabVIEW that you write uses 2 bytes because 8 bits equals 1 byte. If you write 128 numbers, the file will be 256 bytes long. You can modify the VI to write I32 (4 bytes) or I8 (1 byte) just by changing the representation of the number. You also need to change the subVI that does the actual writing (Write File+ [I16].vi). Be sure to rename the VIs that you change. I would think that your Fortran program would work as long as the data types match.
