Plessey and msi1, Maxicode, Pdf417 – CognitiveTPG DLXi User Manual
Page 300: Plessey and msi1 maxicode pdf417
B A R C O D E I N F O R M A T I O N
Since you may use any of the four start/stop characters on either end of
the symbol, there are 16 possible combinations. These combinations
can identify the product type or other information.
PLESSEY AND MSI1
PLESSEY code supports numerals 0-9, plus six additional characters
(typically A-F). PLESSEY uses a check digit, but the check digit may
be calculated several different ways. To allow the user some flexibility
the printer does not calculate or print the check digit. You must
calculate and enter the check digit manually, according to the
requirements of your bar code system.
MSI is a modified PLESSEY code that uses two check digits. The
printer automatically calculates and adds the check digits. The check
digits are not printed in the bar code subtext.
MSI1 is another modified PLESSEY code that uses one check digit.
Again, the printer will automatically calculate and add the check digit.
The check digits are not printed in the bar code subtext.
MAXICODE
MAXICODE is a fixed-size, two-dimensional bar code symbology
consisting of a matrix of hexagonal elements arranged around a bull’s-
eye "finder pattern." MaxiCode uses five code sets (designated A
through E) to encode all 256 characters of the extended ASCII
character set. CognitiveTPG’s implementation of MaxiCode only
supports code set A at present. This code set can represent the
uppercase characters A - Z, numerals 0 - 9, most common punctuation
marks, and a few special symbols.
PDF417
PDF417 (an abbreviation for Portable Data File 417), originally
developed by Symbol Technologies, Inc., is a two-dimensional stacked
bar code symbology. It is a highly compact medium for encoding any
data representable by the 256 characters of the International
Character Set.
The codeword is the basic unit of a PDF417 bar code. All data encoded
using PDF417 is first converted to a decimal value between 0 and 928
inclusive, since there are 928 discrete symbols that can be represented
Revision F, January 2012, CognitiveTPG
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