Chapter 2
Menu Configuration
2-6
MS-850 Raster Scanner User’s Manual
2–Menu Conf
ig
.
Aux Port Parameters
Options for Baud Rate, Parity, Stop Bits, and Data Bits are identical to the host port
parameters and are changed in the same manner.
Mode
Default:
Disabled
Options:
Disabled, Transparent, Half Duplex, Full Duplex, and Daisy Chain
Note:
Aux Port cannot be used in conjunction with RS-485 or RTS/CTS on the host
port.
Note:
The Aux Port baud rate should never exceed Host Port baud rate or auxiliary
port data could be lost.
Transparent
Used to batch data from the aux port to the host. The scanner buffers data from the
aux port and displays the keyed data on the aux port. The scanner transmits aux port
data to the host when a label is scanned or a carriage return is entered from the aux
port.
Data Initiated from the Aux Port
t
• Aux Port data is passed through to the host whenever a
return key is pressed at the aux port or whenever bar
code data is sent. If sent with bar code data, it is pro-
cessed on a first-in/first-out basis.
• Aux Port data to the host is always sent with a preamble
and a postamble.
• If the scanner is in a polled mode to the host, aux port
data will still pass through.
• A
<
D> command is the only command accepted by the scanner from the aux port. All
other commands will pass through to the host.
Data initiated from the Scanner
• Transmission to the aux port occurs immediately upon a
good read.
• Scan data to the aux port does not include a preamble or
a postamble.
• Communications with the aux port is always in Point-to-
Point protocol, even if the host is in a polled protocol
mode.
Aux.
Port
Host
MS-850
Aux.
Port
Host
MS-850
