Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
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Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
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Chapter 1.0
Printer Character Set
1.0 Unitech MP300 Printer Character Set
Character Sets can be grouped into 3 categories – Control Characters, ACII Print
Characters and Extended Print Characters.
Control Characters
•
Defined as character encoding {0x00..0x1F}
•
Designed to control the printer operation
•
ASCII Print Characters
•
Defined as character encoding {0x20..0x7F}
•
Factory default – ISO defined US-ASCII alpha-numeric character set
•
Extended Print Characters
•
Defined as character encoding {0x80..0xFF}
•
Factory default – “International” and User Selectable “PC Line Draw” character set.
•
ONLY ONE of the Extended Character Sets may be selected per print line
•
1.1 Control Characters
The following set of characters is reserved, for printer control. The printer also
provides single byte responses to inform the host of the printer status.
Character
Control
Hex / Dec
CONTROL ACTION
EOT
^D
0x04 / 04
End Of Text
Printer sends an EOT character when buffer
is empty; tells the host device that printer is in
idle mode.
BS
^H
0x08 / 08
Back Space Remove previous character in
print buffer.
HT
^I
0x09 / 09
Horizontal Tab Tab to 5,9,13,17,21,25,29,33,37
or to the beginning of next line.
LF
^J
0x0A / 10
Line Feed Advance to beginning of next line.
VT
^K
0x0B / 11
Vertical Tab Advance 5 lines.
FF
^L
0x0C / 12
Form Feed Advance 10 lines.
CR
^M
0x0D / 13
Carriage Return Advance to beginning of next
line.
SO
^N
0x0E / 14
Shift Out Printer defaults to 24 column mode
SI
^O
0x0F / 15
Shift In Printer defaults to 42-column mode.
XON
^Q
0x11 / 17
Transmitter On Printer to Host: Ready to
receive data.
AUXON
^R
0x12 / 18
Host to printer: The host is ready to receive
data.
XOFF
^S
0x13 / 19
Printer on Printer to Host: Printer is on line.
Transmitted after initial power up or clearing of
printer jam or paper reload.
NORM
^T
0x14 / 20
Printer receiver is off Printer to Host: Print
Buffer is full or other error condition. Host to
Printer: host device transmitter off.
AUXOFF
^U
0x15 / 21
Return to default 42 column mode
CANCEL
^X
0x18 / 24
Printer to Host: printer is off Transmitted to host
before power down or paper out.
ESC
^[
0x1B / 27
Cancel and reset printer Print buffer is reset
and printer placed in initial power-up default
settings.
EXTEND
^\
0x1C / 28
Escape Escape character precedes graphics
and printer operating modes. Refer to escape
command section.
EXTEND OFF
^]
0x1D / 29
Extended print All characters following this
command are printed double high.
Extended print off/Normal print All characters
following this command are printed normal
height.
