kENDALL Electric Cognex DataMan 260, Manual, Page: 36 / 56

33
The
Match String Validation is used if you want to match the entire string, but what if you only want
to look for a certain sequence of characters? Return to the Data Validation pane and click the radio
button next to Pattern Matching Validation . In the text entry box for Pattern type CLUBS . You
should have something like the image below (Fig. 56). Switch back to the Quick Setup pane and
again place the Ace of Clubs in the field of view and trigger the reader. What is the result? Try any
other card from the Clubs suit. Do you see a similar result? Try a card from any other suit? Now
what do you see? As long as the word
CLUBS is in the string the validation should succeed and if it
is not then the validation should fail.
Return to the
Data Validation pane and select the Data Matrix tab. Click on the radio button in front
of ISO Validation and confirm that the Construct field shows ISO 15434, as seen in the image on the
following page (Fig. 57). Validation follows a specification for how the data in the code is formatted.
Embedded within the code’s data is information that specifies how the data is to be parsed so that
when it is transmitted, it can be stored in a very specific format. Successful validation to a standard
confirms that the code is constructed in the proper manner.
This is different from verification which grades the code based on compliance with metrics in a
specific standard. These metrics address physical aspects of the code and how it is formed. The
grade is relevant to how readable the code will be using a variety of readers and a variety of
operators.
Fig. 56 - Pattern Match Validation