Chapter 14: Epson - Standard Function
14-32
Hp = integer (absolute position / 256)
Lp = absolute position - (Hn * 256)
This command is ignored if a position is specified which is more
than 46.2 inches away from the current top of page position or a set
top margin of the print area, or a position is specified which requi-
res a feed backwards of more than 0.5 inch. By using this command
several times, even a feed of more than 0.5 inch backwards can be
achieved. The feed forwards takes place to no further than the next
top of page position, backwards no further than the top of page po-
sition of the current page. If print areas are set, backwards feed
takes place no further than the top margin of the print area. A feed
into the bottom non-printable area, even due to a set perforation
skip, causes a paper feed to the next top of page position.
If this command requires a backwards feed of the paper, it is igno-
red if the current line contains raster graphic commands.
The following table states the maximum values depending on the
basic step size in inches:
Step size 1/360 1/180 1/120 1/90 1/72 1/60
Range 16639 8318 5546 4159 3327 2773
Absolute position = step size * (Lp + Hp * 256)
Function Dec. Hex. ASCII
Relative vertical print 27 40 118 1B 28 76 ESC ( v
positioning in units of Ln Hn Ln Hn Ln Hn
the basic step size Lp Hp Lp Hp Lp Hp
Ln = 0 to 255
Hn = 0 to 255 (MSB ignored)
Lp = 0 to 255
Hp = 0 to 255 (MSB ignored)
With this command, the printing position is adjusted relatively in
the vertical direction to the current print position in multiples of the
current basic step size.
The parameters Ln and Hn specify the number of parameters follo-
wing this:
Relative vertical
print positioning
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