Specifications

TH230/TH230+ Programmers Guide
183
GS p
Function:
Select PDF 417 parameters
Code ASCII: GS p a b c d e f
Code HEX: 0x1D 0x70 a b c d e f
Default:
a = 1
b = 2
c = 58
d = 7
e = 3
f = 10
Description:
Selects the two-dimensional PDF 417 parameters as follows:
Value
Range
Description
SUPPORT
a, b The ration of bar
height to symbol
length.
NO !!
a =
height
1 ≤ a ≤ 10 NO !!
b =
width
1 ≤ b ≤ 100 NO !!
c rows 3 ≤ c ≤ 90 Number of rows in
the matrix of code
words.
NO !!
d columns 7 ≤ d ≤ 30 Number of
columns in the
matrix of code
words.
NO !!
e x dimen
sion
1 ≤ e ≤ 7 Width of a single
module in dots.
YES
f y dimen
sion
2 ≤ f ≤ 25 Height of the code
word in dots.
NO !!
PDF 417 is a multi-row, continuous, variable length symbolism which has
high data capacity. Each symbol has between 3 and 90 rows, with each row
containing a start pattern, a left row indicator, 1 to 30 data characters, a
right row indicator and a stop pattern. The number and length of the rows
are selectable, which allows the aspect ratio to be adjusted to particular
labeling applications. There are no separator bars between rows.
Each character has four bars and four spaces within 17 modules, and is
assigned a value between 0 and 928. For this symbolism, it is common to
refer to these character values as “code words”.