Printing 2D barcode

[ttks]

Hey guys ...
new here..
not so sure where should i post the question
but hope that u all can help..

it is abt printing 2D Barcode.

Well i have a barcode printer from SATO CL612.

I would like to print a 2D barcode.
According to the user manual.
This Barcode peinter support to the 2D label printing.

by following the command in the book i lamost can print the normal barcode example Code39 barcode.
However i cannot print the 2D barcode label even i follow exactly the same inteuction from the book..

BTW i am want to print PDF417 2D Barcode.
The command states as follow
<ESC>A
<ESC>V0100<ESC>H0100<ESC>BK0607400000021PDF417 PDF417 PDF417
<ESC>Q1<ESC>Z

when never the signal is sent to the printer i can only heard a beep sound..nothing is printed.
sigh..


thanks in advance

Regards
Wen