detect paper out by custumer with kr403  sdk java


For read status of kr403 I am using  :   usb.sendAndWaitForResponse("~HQES".getBytes(), 2000, 1000,new String(new byte[] { 0x03 }));
That I would like to do :
1 - the person pushes a button for print ticket
2 - if the person takes the ticket ->> barrier is open
     if  the person does not take the ticket ->> barrier is not open (and ticket is retract automaticaly)
How  to do this ? steps to analyse warning status ?
thanks very much
Didier P.