Configuring the HostComputer for RS-232Serial InterfaceThis chapter describes how to configure the host co mputer to communicate with the
LabelWriter SE450 printer o ver an RS-232 serial int erface.
nRS-232 Settings
nRS-232 Cabling
nRS-232 Signal Levels
For information about communicatin g with the host compute rusin g the USB port, see the
sample code located on th e LabelWriter SE450 CD that came with t he printer.
RS-232 Settings
In order fort he host computer to communicate wit h the LabelWriter SE450 printer, the
communication parameters must be set as follows:
BaudRate 9600
DataBit s 8
StopBit s 1
Parity None
These settings can often be set using a BIOS setup program or an Operating System Cont rol
Panel applicatio n. For embedded applic ations, you may n eed to build these settings i nto the
embedded system's initializ ation code.
Most languages provid e a command or function to initial ize a serial port.
Ifp rogramming under Window s using Microsoft C/C ++, use the funct ion:
bios_serialcom()
Other C compilers offer a similar fun ction. Consult y our compiler user guid e for the
appropriate function to use to con figure aserial p ort.
Ify ou are using the Unix OS, you’ll n eed to configure the RS-232 port as a dumb prin ter
port, with no special handlin g, control characters or form feeds. The Lab elWriter printer will
handle these functi ons internally.
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