Motorola Symbol DS6707 Product Reference Manual page 193

EAN-8/JAN-8 Extend
Parameter # 27h
Enable this to add five leading zeros to decoded EAN-8 symbols to make them compatible in format to EAN-13
symbols.
Disable this to transmit EAN-8 symbols as is.
Enable EAN/JAN Zero Extend
(01h)
Symbologies 10 - 23
*
Disable EAN/JAN Zero Extend
(00h)