Select/Print Postnet Bar Code Data Command - Oki MICROLINE ML521 Reference Manual

where parameter m designates the number of characters which will follow in the data. If you
wish to include a check digit, enter the ASCII character @ (64 Dec, 40 Hex) at the end of the
data.
Postnet Bar Code Command
Postnet bar coding is used by the United States Post Office for sorting mail by automated
equipment. It incorporates a coding system using five bars and four spaces for each digit.

Select/Print Postnet Bar Code Data Command

The command
selects Postnet bar codes and initiates the printing of the zip code + 4 data which you enter as
part of the command. Each digit of data can be any ASCII character from 0 to 9 (48 to 57 Dec,
30 to 39 Hex). The data must be the full ZIP + 4 code.
Postnet Parameter P
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Parameter P tells the printer how many bytes of bar code data to expect. Its value can be any
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ASCII character from NUL to DC4 (1 to 20 Dec, 01 to 14 Hex): any values for P
range will cause the data to be ignored.
The print density for Postnet bar codes will be 240 dpi. Printing is accomplished in two print
passes with a 1/144" line feed. The bar height will be as follows:
High Bar: 16/144" (eight dots in two passes)
Low Bar: 6/144" (three dots in two passes)
To include the check digit, enter the ASCII character @ (64 Dec, 40 Hex) at the end of the data.
112 Chapter 10: Bar Code Commands for 9-Pin Printers
ESC DLE C P [data]
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outside this
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