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MS851B User’s Manual
GS1-128 (formerly UCC/EAN-128)
GS1-128 is a convention for printing data fields with standard Code 128 bar
code symbols. GS1-128 symbols are distinguished by a leading FNC 1
character as the first or second character in the symbol. Other FNC 1
characters are used to delineate fields.
When GS1-128 symbols are read, they are transmitted after special formatting
strips off the leading FNC 1 character, and replaces other FNC 1 characters
with the ASCII 29 (GS) control character.
When AIM symbology identifiers are transmitted, the modifier character
indicates the position of the leading FNC 1 character according to AIM
guidelines. For example,
]c1
indicates a GS1-128 symbol with a leading
FNC1 character.
Standard Code 128 bar codes which do not have a leading FNC 1 may still be
used, but are not encoded according to the GS1-128 convention. Standard
Code 128 and GS1-128 may be mixed in an application. The auto
discriminates between these symbols, and can enable or disable one or both
indicates the behavior of the scanner in each of the four
possible parameter settings.
