2-30
A-61097 May 1997
Check Digit = Constant 2 -
Custom Check Digit Formula
[Sum of IA Digits * Attributes] + Constant 1
Divisor
Custom Check Digit Definition
Current Value
Parameter
46231546231
00
00
07
Right
No
abcdefghijk
Attributes
Constant 1
Constant 2
Divisor
Left/Right
LUT Status
Lookup Table
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The parameters displayed in the Custom Check Digit Definition window
must be defined.
The following section contains an explanation of each field:
•
Constant 2—A constant value in the range 0 through 99.
•
IA Digits—The digits comprising the Image Address. The Image
Address may contain a fixed field as many as three level fields. The
Image Address cannot exceed 11 data characters when accompanied
by a check digit; the check digit occupies one character position.
•
Attributes—These are position weights for digits in the Image Address.
A zero-value attribute causes the associated Image Address digit to be
excluded from the check digit calculation. Each digit in the Image
Address is multiplied by its attribute and summed. For example, if the
Image Address is 1202.14.342.12 and you wish to calculate a check
digit that excludes the fixed field (1202), the attributes (using Table 1)
would be 00001546231.
Table 1: Default Image Address Attributes
C10
c9
c8
c7
c6
c5
c4
c3
c2
c1
c0
4
6
2
3
1
5
4
6
2
3
1
NOTE: The “c” in Table 1 refers to the character position.
