Datalogic AV500, Руководство по продукции

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E-GENIUS
110
AV500 2D CAMERA
A Pattern Match String allows the user to check for a sequence of characters in a group of
barcodes. The string can be made up of a sequence of alpha numeric characters combined with
Regular Expression Syntax.
The regular expression algorithms allow checking for conditional barcode information based
on specific expression functions (see below). A pattern matching string is programmable for
each barcode used in the system, and if the barcodes read do not match the defined string, a
No Read Event will be returned. A no read is sent depending on the Match/Do Not Match
selection.
It is possible to define the matching string by inserting Regular Expressions, including but not
limited to the following:
. – (dot) Matches any character
* ‐ (asterisk) Matches 0 or more of the preceding character.
+ ‐ (plus) Matches 1 or more of the preceding character.
\d ‐ Matches any single digit
\w ‐ Matches any word character (alphanumeric & underscore).
[XYZ] ‐ Matches any single character from the character class.
[XYZ]+ ‐ Matches one or more of any of the characters in the set.
$ ‐ Matches the end of the string.
[^a ‐ z] ‐ When inside of a character class, the ^ means NOT; in this case, match anything that is
NOT a lowercase letter.
Examples:
Match a code starting with 123 string and followed by any string of characters:
Match String = 123.*
Example Code = 123aC53
Match a code ending with 123 string preceded by any string of characters:
Match String = .*123
Example Code = 41pO123
Match a code having 123 string in any position: 0)
Match String = .*123.*
Example Code = 41pO123253
O
PTIONS
Code 128
Enable 7DR Check Digit
Select the check box to enable 7DR Check Digit.
Transmit Start / Stop Char(s)
Select the check box to enable transmission of start and stop characters.
Short Margin
Select the check box to enable. Available for Code 128, Code GS1 ‐ 128, Interleaved 2 of 5, Code
39, Code GS1 ‐ 128, EAN, UPC, CODABAR, and Code 39. This option deals with an illegal quiet
zone.
For Codabar codes the start/stop characters must be considered in the match condi-
tions. For all codes which use check digits, if the Check Digit is transmitted, it must be
considered in the match conditions. Input fields will vary depending on the selected
symbology.