CHAPTER 6 EPSON - 17
You can set up to eight different sets of vertical tab stops and select any of these sets for use at any time.
Each set of tab stops is called a channel - channels are numbered from 0 to 7.
Channel 0 normally holds the settings you have selected with the Esc B command, or equally spaced tab
settings that you have set with the Esc e 1 command. However, you can also set the channel 0 tab settings
using the Esc b command.
To set the tab stops held in channels 1 to 7 you must use the Esc b command.
This command enables you to set up to sixteen vertical tab stops for each channel based on the current line
space setting.
n is the channel number whose tab stops are to be set.
m
i
specifies the tab based on the current line space setting.
The value of m
i
must be in the range 0 to 255.
The tab stops must be set in ascending order. If you specify a channel's tab settings in any other order, any
previous settings made for that channel are cleared.
Vertical tab settings are not affected by subsequent changes in the line spacing setting.
Esc b n 0 clears the vertical tab settings set for channel n.
You can select a channel using the Esc / command and move the print position to its tab stops using the VT
control code.
LPRINT CHR$(27); CHR$(98); CHR$(1); CHR$(10); CHR$(20); CHR$(0);
'Set tab stops at lines 10 and 20.
Select vertical tab channel
Esc/n (27)(47)n <1Bh><2Fh>n
This command allows you to select a set of vertical tabs (or channel) that you defined using the Esc b
command.
All subsequent vertical tab commands use the selected tab channel's settings.
n must be in the range from 0 to 7.
The default channel is channel 0. Channel 0 is the current channel when the printer is first switched on or
after a reset with the Esc @ command.
There are no default vertical tab settings for any channel.
LPRINT CHR$(27); CHR$(47); CHR$(5); 'Select vertical tab channel 5
Vertical tab
VT (11) <0Bh>
The VT control code (ASCII 11) moves the current print position one vertical tab stop down the page. The
current vertical tab channel's settings are used.
If you have not previously selected a vertical tab channel with the Esc / command, channel 0, the default
channel is used.
If you have not set any vertical tab stops for the current channel with either the Esc B, Esc b, or Esc e 1
commands, the print position is moved down one line using the current line space setting.
If there are no tab stops below the current print position a line feed is performed.
If no tab stops have been set a carriage return and line feed are performed.
LPRINT CHR$(11); ' Vertical tab
6.5. Using Standard Characters
Set pitch to 10 characters per inch
EscP (27)(80) <1Bh><50h>
This command sets the printing pitch to 10 characters per inch (cpi).
LPRINT CHR$(27); CHR$(80); 'Set pitch to 10 cpi
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