Rs-232 settings, Chapter 2 – Epson LABELWRITER SE450 User Manual
Page 9
Configuring the Host
Computer for RS-232
Serial Interface
This chapter describes how to configure the host computer to communicate with the
LabelWriter SE450 printer over an RS-232 serial interface.
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For information about communicating with the host computer using the USB port, see the
sample code located on the LabelWriter SE450 CD that came with the printer.
RS-232 Settings
In order for the host computer to communicate with the LabelWriter SE450 printer, the
communication parameters must be set as follows:
Baud Rate
9600
Data Bits
8
Stop Bits
1
Parity
None
These settings can often be set using a BIOS setup program or an Operating System Control
Panel application. For embedded applications, you may need to build these settings into the
embedded system's initialization code.
Most languages provide a command or function to initialize a serial port.
If programming under Windows using Microsoft C/C++, use the function:
bios_serialcom()
Other C compilers offer a similar function. Consult your compiler user guide for the
appropriate function to use to configure a serial port.
If you are using the Unix OS, you’ll need to configure the RS-232 port as a dumb printer
port, with no special handling, control characters or form feeds. The LabelWriter printer will
handle these functions internally.
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Chapter 2