Tally Genicom Matrix Printer POSTNET (Style 50)

7265 Programmer’s Manual 56

POSTNET (Style 50)

You cannot adjust POSTNET bar code attributes with ESC[(p1);..(p12)}. Al l attribute parameters

except the style parameter (p1) are ignored by POSTNET, althou gh they are processed, saved,

and would apply to a subsequent bar code of another st yle if not overwritten. To select

POSTNET, you need to send only ESC [50}. You cannot pr int human-readable characters with

this bar code style.

There are three variations of POSTNET. They are ZIP, ZIP+4, a nd ABC. The printer determines

which variation is being called for by the number of charac ters in the symbol string. Legal

characters are the numerals 0 - 9 (30 hex - 39 hex) and t he dash symbol (2D hex), which is

ignored. Any other printable characters in the symbol string ca use an error character (diamond) to

be printed.

The check digit is the digit that makes the sum of the digits in the symbol string, including the

check digit, evenly divisible by 10. For example, if you send the ZIP symbol string "12345", then

the sum of those five digits is 15, so "123455" would be the com plete ZIP symbol.

If you do not send a check digit, then the printer com putes it and prints it. If you do send a check

digit, the printer compares your check digit with its i nternal computation; and if the two numbers

do not agree, then an error character is printed.