Datalogic DS8110, Справочное руководство

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DS8110 REFERENCE MANUAL
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Field Name Action/Definition
Rule 2
: the shorter code is not filtered by rule 1. In the longer code, all
possible sub-strings of the same length as the shorter code string are
compared with the shorter code string. The shorter code is considered
contained in the longer code if the number of different characters between the
compared codes is less than or equal to the Max Number of Different
Characters. The shorter code will be filtered by rule 2.
Example:
If Max Number of Different Characters = 1:
The code
123456 is considered contained in the following codes:
123056 00, 00 123056 , 88 123056 88 because there is only one different
character in the compared string.
The code
123456 is not considered contained in 123066 789 because
there are two different characters in the compared string.
CAUTION: If the Contained Filter parameter is used
when Message Tx Selection (see section 3) is set to
On Decoding , the filter conditions may be satisfied
before the reading phase ends resulting in possible
successive multiple read errors.
Max Number of
Different Characters Enter a value from 0 to 5 in the field provided to define the maximum number
of different characters allowed to still consider a code as being included in
another one and therefore to be filtered.
If the number of different characters between the compared codes exceeds
the value of this parameter, the codes are considered as different and will not
be filtered (a multiple read of a different code occurs).
If the number of different characters between the compared codes is less
than or equal to the value of this parameter, the short code is considered as a
sub-string of the longer code and will be filtered (no multiple read occurs).
Examples:
If
Max Number of Different Characters = 2:
The code
123456 read once, is considered the same as the following
codes read multiple times: 1 3 3 0 56, 123 54 6, 12345 7 because there are
two or less different characters by position in the compared codes.
The code
123456 read once, is not considered the same as the following
codes read multiple times: 1 5 3 24 6, 1 0 3 0 5 7 , 654321 because there are at
least three different characters by position in the compared codes.