Honeywell International Inc. CS19A Manuale Utente

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Some applications require that the host terminal (or server) approve or reject 
incoming bar code data and notify the operator of these actions.  These applica-

tions require that the host maintain control over the response indicators emitted 
from the scanner.  Turning on Host ACK configures the scanner to respond to 
commands from the host system.
Note: System performance degrades when using Host ACK at rates lower than 

9600 baud.

The following criteria must be met for the Host ACK to work correctly:

• The cordless system must be configured for Host Port RS232 (terminal ID = 

000)  or USB COM Emulation (terminal ID = 130).

• RTS/CTS is defaulted off.  You must enable it if the host system requires it.
• Host ACK must be set to On (

• The host terminal software must be capable of interpreting the bar code data, 

make decisions based on the data content, and send out appropriate escape 
commands to the scanner.

Escape commands are addressed to the scanner via “Application Work 
Groups.” Once a command is sent, all scanners in a group respond to that com-
mand.  Because of this situation, it is recommended that each scanner is 
assigned to its own group in Host ACK mode

.

The commands to which the scanner responds are listed on 

.  The 

 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, which is required.

Commands may be strung together to create custom response sequences.  An 
example of a command string is listed below.

0<ESC>4<ESC>5<ESC>6,

The above example will make a scanner in application work group zero beep 
low, then medium, then 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 the scanner receives an escape 
command.  The scanner read illumination goes out when there’s a successful 
read.

• Scanner operation 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.

A time-out occurs if the scanner does not receive a valid escape command 
within 10 seconds.  A time-out is indicated by an error tone.  If a time-out occurs, 
the operator should check the host system to understand why a response to the 

scanner was not received.

Preliminary Draft