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Control Codes
2-2
Draft document
Vertical Tab VT Advances the paper to the next vertical tab position set
by the ESC B command. If no tab position is set, the
printer performs a single line feed.
If the next vertical tab position is greater than the form
length (or form length minus skip perforation), the VT
does a line feed.
An automatic carriage return may be optionally disabled
11 0B
Form Feed FF Advances the paper to the top of the next page and does
a carriage return.
12 0C
Carriage Return CR Moves the current print position to the left margin of the
current line. An automatic line feed may be optionally
added by the setup.
13 0D
Double-Wide Printing by
Line
SO Prints all characters in double-width mode.
This mode is canceled by the receipt of ESC [ @, ESC W
n, CR, LF, VT, FF, DC4, CAN or auto wrap.
14 0E
Condensed Printing SI Condenses printing from 10 characters per inch (cpi) to
17.1 and 12 cpi to 20.
15 0F
Select Printer DC1 Selects the printer, causing all subsequent data to be
accepted.
17 11
Select 10 cpi DC2 Returns condensed printing to normal (10 cpi). Cancels
SI mode.
18 12
Deselect Printer DC3 This control code has no effect on the parallel interface.
This command is accepted and ignored.
19 13
Cancel Double-Wide
Printing by Line
DC4 Cancels double-width printing mode and returns printing
to normal.
20 14
Cancel Data CAN Clears current line buffer of data already received to print
on the current line. Does not change the current print
position
24 18
Table 2-1: Control Codes (Continued)
Code Name Symbol Description
Value
(Dec)
Value
(Hex)
Beeper BEL
Sounds the printer beeper for approximately 1
second. 7 07