Epson LQ-1150 User Manual page 40

When set to Auto, the printer analyzes the data and uses
unidirectional printing only for lines which require vertical
printing alignment.
Software
When you select ESC/P2, the printer operates in the EPSON
ESC/P2 mode. When you select IBM PPDS, the printer emulates
an IBM printer.
0 slash
The zero character has a slash ( ) when this feature is turned on.
It has no slash (0) when this feature is turned off. The slash allows
you to easily distinguish between the uppercase letter O and a
zero.
High speed draft
When you choose On, the printer prints up to 300 cps (characters
per second) at 10 cpi (characters per inch) or 360 cps at 12 cpi.
When you choose Off, the printer prints up to 250 cps at 10 cpi or
300 cps at 12 cpi.
I/F (interface) mode
The printer comes with a built-in parallel interface and serial
interface.
If your printer is connected to only one computer, select Parallel
or Serial for the interface mode, depending on the interface you
use. If your printer is connected to two computers, select Auto
(automatic) to allow the printer to automatically switch between
interfaces depending on which one is receiving data.
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Using the Printer
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