Honeywell International Inc. MX2702 Manuale Utente

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The commands to which the scanner responds are listed on 
.  The 
<ESC> is a 1B in hex.  A typical command string is y <ESC> x, where “y” is the 
application work group number, “<ESC> x” is the escape command, and the 
comma is the terminator.
Up to twenty commands may be strung together to create custom response 
sequences.  An example of a command is listed below.
0<ESC>4<ESC>5<ESC>6,
The above example will make a scanner in application work group zero beep low, 
medium, high.
Once Host ACK is enabled, the system works as follows:
The scanner reads a code and sends data to the base/host system.  No 
audible or visual indication is emitted until you receive an escape command.  
The scanner read illumination goes out upon a successful read.
Scanner is suspended until 1) a valid escape string is received from the host 
system (via the base) or 2) the scanner “times out.”
Once condition 1 or 2 above has been met, the scanner is ready to scan 
again, and the process repeats.
Time out is indicated by three rapid beeps at the same pitch.  A time out occurs 
if the source scanner does not receive a valid escape command in 10 seconds.  
If a time out occurs, the operator should check the host system to understand 
why a response to the scanner was not received.
Host ACK Enable
Host ACK On
* Host ACK Off