User's Manual

KDC250 User Manual
89
and Bookland EAN are both enabled, Bookland EAN takes precedence. Bookland EAN does not have any
options. The Bookland EAN barcode does not contain any groupings – that is, there are no hyphens or
separators. Thus, the ISBN 957-630-239-0 is transmitted as 9576302390.
Add-on Symbologies
By default, the 2 or 5 digit add-on symbols with a UPCE, UPCA, EAN-8, and EAN-13 barcode is neither
decoded nor transmitted. Transmission for these specific symbologies is enabled by setting the appropriate
withAddon options. There are 4 withAddon options, one for each symbology:
 UPCEwithAddon
 UPCAwithAddon
 EAN8withAddon
 EAN13withAddon
The decoding of add-on symbols is typified by the following table, which explains the process for EAN-13
symbols.
Mode Behavior Value of flags
EAN13 EAN13withAddon
Auto-discrimination If add-on symbol is present, then it is also
decoded; otherwise only the EAN-13 symbol
is decoded.
true true
With add-on Only EAN-13 barcodes with 2 or 5 add-on
symbol are decoded.
false true
Without add-on The add-on symbol is ignored. true false
Table 7 - Add-on for EAN-13 Symbology
The add-on symbol is appended to the EAN-13 barcode. The process is similar for UPCE, UPCA, and
EAN-8 barcodes. Note that all the UPCE, UPCA, EAN-8, and EAN-13 formatting and conversion options
are in effect. The following table should help explain the effect of various options for EAN-8 barcode
12345670 + 12.
Barcode
EAN8_as_EAN13 EAN8_ReturnCheckDigit EAN13_ReturnCheckDigit
1234567012
False
True
N/A
123456712 False
00000123456712
True
N/A
false
000001234567012 true
Table 8 - Add-on for EAN-8 Symbology
The add-on symbol neither contains check digit nor a terminating guard band. Every effort has been made
to reduce the decoding error; however, it is likely to decode a partial scan of a 5-digit add-on symbol as a 2-
digit add-on symbol. It is strongly recommended that the minimum security level is set at 2 while decoding
add-on symbols. Since the decoder takes a conservative view on the add-on symbols, it is likely that the
add-on symbol will be missed in the auto-discrimination mode. Auto-discrimination mode should then be
avoided.