Symbol P470/P370, Product Reference Manual

Page: 177 / 208

A-1
Appendix A
Bar Code Information
UCC/EAN-128
UCC/EAN-128 is a convention for printing data fields with standard Code 128 bar code
symbols. UCC/EAN-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 EAN-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 UCC/EAN-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 EAN-128 convention. Standard Code 128 and UCC/EAN-
128 may be mixed in an application. The scanner autodiscriminates between these
symbols and can enable or disable one or both code types via bar code menus. The
following table indicates the behavior of the scanner in each of the four possible parameter
settings.