１１
following explains these indications:
One LOW one HIGH: power on
One HIGH one LOW: power off
Two HIGH: printer out of paper
Four HIGH: high temperature error
Three LOW: low battery
Chapter 4 Printing Control Commands
T
Ⅲ
printer adopts ESC/POS compatible commands, the following table is
the printing commands. They are classified according to their functions.
Section
Commands
Descriptions
Printer printing commands
4.1.1
ESC @
Initialize printer
4.1.2
NULL
Awaken printer
4.1.3
FF
Print and return to standard mode in
page mode
4.1.4
LF
Print and feed line
4.1.5
CR
Print and carriage return
4.1.6
ESC J n
Print and feed paper for n vertical
active units
4.1.7
ESC d n
Print and feed paper for n lines
4.1.8
HT
Horizontal tab
Character setting commands
4.2.1
ESC ! n
Set print mode
4.2.2
ESC U n
Enlarge width
4.2.3
ESC V n
Enlarge height
4.2.4
ESC W n
Enlarge width and height
4.2.5
ESC – n
Select/cancel underline print
4.2.6
ESC + n
Select/cancel up-line print
4.2.7
ESC i n
Select/cancel white/black inverted
print
4.2.8
ESC c n
Select/cancel upside-down print
Print setting commands
4.3.1
ESC $ nL nH
Set absolute print position
4.3.2
ESC D n1 n2…nk
NULL
Set horizontal tab position
4.3.3
ESC \ nL nH
Set relative printing position
4.3.4
ESC 2
Set default line spacing
4.3.5
ESC 3 n
Set line spacing
