Chapter 5: Programming commands
102
A776 (B780) Programming Guide
A776-PG00001 D 07/13
Each character has four bars and four spaces within 17 modules, and is assigned a value between 0 and 928. For this
symbology, it is common to refer to these character values as “code words.”
There are three mutually exclusive sets of symbol patterns, or clusters, each having 929 distinct patterns. Because
different clusters are used for adjacent rows, it is possible for the decoder to tell if the scanning path is crossing row
boundaries without the use of separator bars.
Sample symbol description:
Each PDF 417 symbol consists of 3 to 90 stacked rows surrounded on all four sides by a quiet
zone. Each row contains:
1
Leading quiet zone
2
Start pattern
3
Left row indicator characters (code words)
4
One to thirty data characters (code words)
5
Right row indicator character (code words)
6
Stop pattern
7
Trailing quiet zone
The number of characters in a row and number of rows can be adjusted to vary the symbol’s overall aspect ratio to best
fit an available space.
Each row has a left and right row indicator with a data region between. The left-most character in the top row of the
data region is the total number of characters in the data region, excluding error correction characters. Characters
within the data region are designed to be read from left to right, starting on the top row, immediately after the length-
defining character. The maximum characters in the data region are 928.
Related Information:
The “Set bar code width” command (1D 77 n) affects the x dimension and row height for PDF 417. See chart below.
n value
x dimension
row height
2
2
7
3
3
10
4
4
13
5
5
17
6
6
20
Select bar code width
ASCII
GS w
n
Hexadecimal
1D 77
n
Decimal
29 119
n
Value of
n:
2, 3, 4, 5, 6
Default:
3 for receipt; 2 for slip
Sets the bar code width to
n
dots.
Formulas
n
/8 mm (
n
/203 inch) for receipt.
n
/5.7 mm (
n
/144 inch) for slip.
Содержание A776 ColorPOS
Страница 12: ...Contents x A776 B780 Programming Guide A776 PG00001 D 07 13...
Страница 14: ...Chapter 1 About this Guide 2 A776 B780 Programming Guide A776 PG00001 D 07 13...
Страница 160: ...Appendix B Resident Character Sets 148 A776 B780 Programming Guide A776 PG00001 D 07 13 Code page 737 Greek...
Страница 161: ...Appendix B Resident Character Sets A776 PG00001 D 07 13 A776 B780 Programming Guide 149 Code page 850 Multilingual...
Страница 162: ...Appendix B Resident Character Sets 150 A776 B780 Programming Guide A776 PG00001 D 07 13 Code Page 852 Slavic...
Страница 163: ...Appendix B Resident Character Sets A776 PG00001 D 07 13 A776 B780 Programming Guide 151 Code Page 857 Turkish...
Страница 164: ...Appendix B Resident Character Sets 152 A776 B780 Programming Guide A776 PG00001 D 07 13 Code page 858 with Eurosymbol...
Страница 165: ...Appendix B Resident Character Sets A776 PG00001 D 07 13 A776 B780 Programming Guide 153 Code page 860 Portugese...
Страница 166: ...Appendix B Resident Character Sets 154 A776 B780 Programming Guide A776 PG00001 D 07 13 Code page 862 Hebrew...
Страница 167: ...Appendix B Resident Character Sets A776 PG00001 D 07 13 A776 B780 Programming Guide 155 Code page 863 French Canadian...
Страница 168: ...Appendix B Resident Character Sets 156 A776 B780 Programming Guide A776 PG00001 D 07 13 Code page 865 Nordic...
Страница 169: ...Appendix B Resident Character Sets A776 PG00001 D 07 13 A776 B780 Programming Guide 157 Code page 866 Cyrillic...
Страница 170: ...Appendix B Resident Character Sets 158 A776 B780 Programming Guide A776 PG00001 D 07 13 Code page 1251 Cyrillic...
Страница 171: ...Appendix B Resident Character Sets A776 PG00001 D 07 13 A776 B780 Programming Guide 159 Code page 1252 Windows Latin 1...
Страница 172: ...Code page 1255 Hebrew...
Страница 173: ...Code page KZ_1048 Kazakh Code Page KZ_1048 Kazakh...
Страница 174: ...Appendix C Electronic Journal 162 A776 B780 Programming Guide A776 PG00001 D 07 13...
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