Set Printing Area Width - CognitiveTPG A799II Programming Manual

52 Chapter 4: Programming Commands

Set printing area width

ASCII
GS W nL nH
Hexadecimal 1D 57 nL nH
Decimal 29 87 nL nH
Range of nL:
0–255
Range of nH: 0–255
Default:
576 dots (the maximum printable area)
Sets the width of the printing area until the printer is initialized, reset, or powered off. If the setting exceeds the printable
area, the maximum value of the printable area is used. If the left margin and printing area set the width to less than the
width of a single character, the width is extended ot accommodate the character for the line. The width of the printing area
is set to ((nH X 256) + nL) times horizontal motion unit) inches. The horizontal motion units are set by the set horizontal
and vertical minimum motion units command (1D 50). If the horizontal motion unit is changed after changing printing
area width, the printing area width setting is not changed.
The width of the printing area follows the set left margin command (1D 4C). See the set left margin command (10 4C ...)
earlier in this document for a description.
Formulas
To set the width of the printing area to one inch at the default horizontal motion unit of 1/203 inches, send the four-byte
string:
GS W 203 0
Or, to set the width of the printing area to two inches at the default horizontal motion unit of 1/203 units per inch, send the
four-byte string:
GS W 150 1
Where 2 inches = 406/203, and 406 = (1 X 256) + 150.
Exceptions
This command is effective only at the beginning of a line.
If the setting exceeds the printable area, the maximum value of the printable area is used. The maximum printable area is
576 dots. See the illustration.
If this command is processed in page mode, printing area width is not changed until the printer is returned to standard
mode.
Printable Area 576 Dots
Left
Margin
A799-2PG0001B 4/2016
Printing Area
Width