Honeywell International Inc. MX2702 Manuel D’Utilisation

RS-232 Handshaking allows control of data transmission from the Imager using 
software commands from the host device.  When this feature is turned 

Off, no 

data flow control is used.  When Data Flow Control is turned 

On, the host device 

suspends transmission by sending the XOFF character (DC3, hex 13) to the 
Imager.  To resume transmission, the host sends the XON character (DC1, hex 
11).  Data transmission continues where it left off when XOFF was sent.  

Default 

= RTS/CTS, XON/XOFF and ACK/NAK Off

Some applications require that the host terminal (or server) approve or reject 
incoming bar code data and notify the operator of these actions.  These 
applications require that the host maintain control over the response indicators 
emitted from the source scanner.  Turning the Host ACK selection on, configures 
the cordless system scanners to respond to commands from the host system.

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

•

The cordless system must be configured for “Host Port RS-232” (Terminal ID 
= 050)

•

RTS/CTS is defaulted off.  You must enable it if the host system requires it.

•

Host ACK must be enabled (

•

System performance degrades when using Host ACK at rates lower than 
9600.

•

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 source scanner.

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

  RTS/CTS On

 * XON/OFF Off

* RTS/CTS Off

XON/XOFF On

ACK/NAK On

 * ACK/NAK Off