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Commands
GS h Set Barcode Height
Description
Defines the height of the bars (in dots) for barcodes. The height is defined in n/203 inch
increments. For example, specify 203 as the value for n to print a 1-inch high barcode.
The barcode height is always rounded up to the next multiple of 8.
Expression
ASCII GS h n
Decimal 29 104 n
Hex 1D 68 n
Parameters
n the desired height (in dot lines) of the barcode
GS k Print Barcode
Description
Prints a barcode at the current position in the current orientation. The n parameter
selects the symbology to be printed. (See the table below.) The m parameter specifies
how many characters are to be encoded as part of the barcode. If the number of
characters to be encoded is variable, the m parameters can be set to zero. This will cause
the printer to read the next character sent as a delimiter character. Further characters will
then be encoded into the barcode until a character is found that matches the start
character.
Expression
ASCII GS k n m d1…dm
Decimal 29 107 n m d1…dm
Hex 1D 6B n m d1…dm
Parameters
n Selects the barcode symbology to be used
m
Specifies the number of characters to be encoded. Also specifies which
EAN/UPC symbology will be used
d1…dm The data characters to be encoded.
Character Value Barcode Symbology
n = 0 POSTNET
n = 1 reserved
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