Epson 5000 - Manual (Page 145)

Using the Command Summary
This printer uses the Epson ESC/P 2 printer control language.
You can use these commands to produce high quality,
laser-like printouts. ESC/P 2 commands provide scalable fonts
(Epson Roman, Epson Sans Serif, Epson Roman T, and Epson
Sans Serif H) and enhanced graphics. The following section
lists and describes all the commands by topic. If a command
has no parameters, it is merely listed. If it has parameters, they
are explained. The parameters are indicated by lowercase
italicized letters, usually n. The examples below show how the
parameters are indicated.
ESC @ is a command with no parameters.
ESC U 1/0 is a command that uses 1 to turn the feature on and
0 to turn it off.
ESC $ nl n2 is a command with two parameters.
ESC D nn is a command with a variable number of parameters.
If you are an experienced printer user, you may want to
purchase the ESC/P Reference Manual for comprehensive
programming information on all these commands. Contact
your Epson dealer or see “Where to Get Help for United States
Users,” earlier in this manual.
Commands Arranged by Topic
General operation
ASCII Dec. Hex. Description
ESC @ 64 40 Initialize Printer
ESC U 1/0 85 55 Turn Unidirectional Mode
on/off
8-2 Command Summary