104 Chapter 4: Programming Commands | Revision D 12/09 |
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:
1Leading quiet zone
2Start pattern
3Left row indicator characters (code words)
4One to thirty data characters (code words)
5Right row indicator character (code words)
6Stop pattern
7Trailing 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
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: | n=3 |
Sets the bar code width to n dots.
Formulas
n/8mm (n/203 inch)