Metrologic Instruments IS1000 , 3.7. UCC/EAN 128

IS1000 – Configuration Guide 37
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3.7. UCC/EAN 128
This symbology is fully compatible with Code 128. The main difference between EAN 128
and conventional Code 128 is that EAN 128 codes always contain a reserved non-data
character, function 1 (FNC1), as the first character after the start character. This FNC1
character acts also as a separator of fields in the code.
Example of code UCC/EAN 128 structure:
START FNC1 ID – DATA 1 FNC1 ID – DATA 2 CK STOP
START : Start character from set A, B or C
FNC1 : Separator character
ID : Identifier of type of data
CK : Check digit modulo 103
STOP : Stop character
The decoder detects an UCC/EAN 128 code when FNC1 is the leading character.
The transmission of the data string will be performed as follow:
] C1 ID – DATA 1 GS ID – DATA 2
] C1 : Three characters representing the identifier of the code UCC/EAN 128
GS : ASCII character (1D hexa) acting as a separator
In Keyboard-Wedge mode, the character GS is transmitted as quotes " (22 hexa).
The character FNC1 can be transmitted or not using these codes:
! Note:
FNC1 NOT TRANSMITTED * FNC1 TRANSMITTED