P6-2 Mobile Printer CPCLProgramming Manual
PDF417
The PDF417 bar code is a 2D bar code that can contain
a very large amount of data in a small space. If you look
at a PDF417 bar code carefully, it is actually a stack of
smaller bar codes. The number and height of the stacks
are controllable by the user. The bar code can contain
the entire ASCII 255 set of characters, and has the capa-
bility to use different encoding schemes and different
levels of security to correct errors. The largest amount of
data that can be encoded is 2725 characters
MaxiCode
MaxiCode was originally designed by the United Parcel
Service to help them automate package delivery and sort
packages coming down a quick conveyor belt. It consists
of a bulls eye to help the imaging system “target” the bar
code and an array of hexagons to represent the data
stored in the bar code. It can contain a maximum of 93
alphanumeric characters or 138 numeric characters, has
two different error correction modes, seven different
storage modes, the capability to use character sets other
than ASCII, and the capability to “link” several MaxiCodes
together. Since there are so many different modes, it is
suggested that you contact AIM for the symbol specifica-
tion. If you are developing software to be used with the
UPS MaxiCode shipping system, contact UPS for infor-
mation on how to order the information on the Maxicode
shipping system.
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