CognitiveTPG A760 - Manual (Page 49)

A760 User Guide: Programming Supplement
Chapter 4: Programming commands
49 Revision F January 2010
Set relative print position
ASCII ESC \ n1 n2
Hexadecimal 1B 5C n1 n2
Decimal
27 92 n1 n2
Value of n:
To move the relative starting position right of the current
position by n dots:
n1 = Remainder after dividing n by 256
n2 = Integer after dividing n by 256
The values for n1 and n2 are two bytes in low byte, high
byte word orientation.
To move the relative starting position left of the current
position by n dots:
n1 = Remainder after dividing (65,536–n) by 256
n2 = Integer after dividing (65,536–n) by 256
The values for n1 and n2 are two bytes in low byte, high
byte word orientation.
Moves the print starting position the specified number
of dots either right (up to the right margin) or left (up to
the left margin) of the current position. The print starting
position is reset to the first column after each line.
Formulas
To move to the left:
Determine the value of n by multiplying the number of
columns to move left of the current position by 10 (slip
or receipt standard pitch) or 8 (receipt compressed pitch).
The example shows how to set the relative position two
columns in standard pitch (10 dots per column) to the left
of the current position.
2 x 10 = 20 dots (two columns to be moved left
of the current position)
65,536–20 = 65516
65,516/256 = 255, remainder of 236
n1 = 236, n2 = 255
To move to the right:
Determine the value of n by multiplying the number
of columns to move right of the current position by
10 (slip or receipt standard pitch) or 8 (receipt compressed
pitch). The example shows how to set the relative position
two columns in standard pitch (10 dots per column) to the
right of the current position.
2 x 10 = 20 dots (two columns to be moved left
of the current position)
20/256 = 0, remainder of 20
n1 = 20, n2 = 0
Related information
If the set horizontal and vertical minimum motion units
command (1D 50) is used to change the horizontal and
vertical minimum motion unit, the parameters of this
command (set relative print position) will be interpreted
accordingly. For more information, see the description
of the set horizontal and vertical minimum motion units
command (1D 50) in this document.
Compatibility information (A760 receipt vs. A756
receipt)
There is a difference in the normal behavior of this
command in A758 emulation and A760 native modes,
as compared to the original A756. The difference exists
when the command is used to move to the left. The A756
processes the whole print string prior to putting it in
the buffer for the printhead. This method of processing
allows the A756 to backup in the print string and replace
characters and their associated attributes when a “Set
relative print position” command instructs the printer to
move the print position to the left.
In order to improve the speed of printing, the A758
emulation and A760 moves the data into a buffer for the
printhead when it receives it. When the “Set relative print
position” command contains a move to the left, this causes
the new data to overstrike the previous data. This behavior
can be used to an application’s advantage to provide
the ability to create compound characters on the receipt
station.