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204
Chapter 3 Bar Codes
Quiet Zone
Both ends of the bar code structure require blank quiet zones. The quiet
zones must be at least 0.25 inches wide and completely blank to ensure
accurate reading of the start/stop codes and to prevent adjacent bar codes
from overlapping. Be sure to provide sufficient space on the form for the quiet
zones.
Start/Stop Codes
The start/stop codes identify the leading and trailing end of the bar code. Each
of the UPS 11 subsets uses a unique start code and a common stop code,
both automatically provided by the IGP/PGL.
Data Field
UPS 11 is a special case of Code 128 (page 108). This bar code is restricted
to 10 data characters. The first character must be 0 through 9 or A through Z.
The remaining nine digits must be 0 through 9.
Readable Data
The optional readable data field provides a readable interpretation of the bar
code data. It can be printed above or below the bar code symbol.
Check Digit
The modulo-103 check digit is automatically calculated and inserted in the bar
code symbol. The check digit verifies accurate scanning. The start code is
included in the check digit algorithm.
UPS 11 Command Format
BARCODE
UPS11; [
DIR
;] [
MAG
;] [H
n
[.
m
];] [BF
n;L;
] [DARK;]
SR; SC
[
(D)data field(D)
]
[PDF [;
LOC] [;FONT
]]
STOP
BARCODE The Bar Code command; enter BARCODE.
UPS11 Designates bar code type UPS 11; enter UPS11.
DIR
Optional parameter that allows for rotating a
barcode. Enter CW for clockwise rotation. Enter
CCW or VSCAN for counter-clockwise rotation.
Enter INV for inverted rotation. If
DIR
is not
entered, the barcode is horizontally oriented.
MAG
Optional parameter to magnify (horizontally
expand) the bar code symbol. The magnification
default value is X1. Increasing the magnification
adjusts printed character density as shown in Table
8. You can also use XR or XRD as defined on page
89. (You must specify 8 digits for
MAG
for variable
ratio.)