User`s manual

A–19Bar Codes
• The printer computes a modulus 10 checksum digit so that the six digits
to be encoded in the bar code symbol are selected correctly. However,
the check digit is not encoded as part of the bar code symbol and is not
printed in the human–readable line.
Table A–2. UPC–E Number Pattern Sequences
X X 0 0 0
X X 1 0 0
X X 2 0 0
X X 3 0 0
X X 9 0 0
X X X 1 0
X X X 9 0
X X X X 1
X X X X 9
.
.
.
.
.
.
0 0 0 0 0
0 0 9 9 9
.
.
.
0 0 0 0 0
0 0 0 9 9
.
.
.
0 0 0 0 0
0 0 0 0 9
.
.
.
0 0 0 0 5
0 0 0 0 9
.
.
.
XX000
XX
.
.
.
XX999
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
XX 003
XX 3
XX 3
.
.
.
.
.
.
99
XXX 40
XXX 4
XXX 49
.
.
.
XXX 5X
XXXX
XXX 9X
.
.
.
0
1
2
3
9
1
9
1
9
.
.
.
.
.
.
.
.
.
NOTE: X may range from 0 to 9
.
.
.
If the
Vendor
Number is:
And the
Product
Number is:
Then the
Encoded
UPC–E Bar Code
Symbol is:
Postnet
The Postnet bar code has two tall bars and three short bars for a total of five
bars. These five bars represent a numeric digit with valid values from 0 to 9.
The above is always true except with the START/STOP character codes. The
START character bar pattern has one tall bar and one space. The STOP
character has one space and one tall bar.
Parameters P2 through P5, P7, and P9 are not applicable and are ignored.