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Changing Serial Port (RS-232C) Settings
Use the Primary serial port and Secondary serial port options to change
the default parameters for the serial ports installed in your computer. The
primary serial port is the one that you refer to in MS-DOS as COM1:-
normally the built-in serial port. You might use this port for a serial printer,
or an external modem. The secondary serial port is the one you address as
COM2:- normally a serial port on an option card. This might be the name
used for an internal direct modem.
For example, if you have a serial printer attached to the built-in serial
port, you can use the Primary serial port option to match the computer’s
parameters to the printer’s switch settings so that you do not need to use a
MODE command to set up the serial port when it is needed.
The process for changing the default serial port settings is identical for
the primary and secondary serial ports. This section uses the primary serial
port as an example.
To alter the primary serial port parameters, move the cursor to Primary
serial port and press
Enter.
You see a menu of serial parameters similar to
this:
Baud rate
110 bps
Parity
None
Data length 8 bits
Stop bits
1 bit(s)
*** SAVE SETTINGS ***
To set the speed of communication, move the cursor to
Baud rate
and
press
Enter.
The screen displays:
110 bps
150
bps
300 bps
600 bps
1200 bps
2400
bps
4800
bps
9600 bps
19200
bps
38400 bps
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