Lexmark Optra W810 Reference page 74

Serial Menu (continued)
Menu item
RS-422 Polarity
Serial Protocol
Robust XON
Baud
* Factory default
Printer setting
= Normal*
= Reverse
Select Reverse polarity to swap the polarity (the definition of
one and zero).
This setting is only available if the serial communication config-
uration is set to RS-422. Select Serial Menu, SERIAL
OPTION 1, RS-232/RS-422, and RS-422.
= DTR* (hardware handshaking)
= DTR/DSR (hardware handshaking)
= XON/XOFF (software handshaking)
= XON/XOFF/DTR (combined handshaking)
= XONXOFF/DTRDSR (combined handshaking)
The printer supports hardware handshaking, software
handshaking, and combined hardware and software
handshaking as indicated in the list of values for this menu item.
Refer to the Technical Reference for more information about the
serial interface.
= Off*
= On
Robust XON only applies to the serial port if Serial Protocol is
set to XON/XOFF. When Robust XON is set to On, the printer
sends a continuous stream of XONs to the host computer to
indicate that the serial port is ready to receive more data.
= 1200
= 2400
= 4800
= 9600*
= 19200
= 38400
= 57600
= 115200
This setting lets you specify the rate at which data is being sent
to or from your computer.
Refer to the Technical Reference for information about the
range of baud values.
Changing printer settings
74