On Fri, Jul 22, 2011 at 12:41 AM, Sytze de Boer <[email protected]> wrote: > I've been testing the foxbarcodes option from VFPX > > Without wanting to create an account, I winder if anyone here is using this > "tool" > > My problem is that when I create a barcode, type 39, it adds a letter to the > barcode image > e.g. 12345 becomes *12345F* > I understand the asterisk additions, but can't figure why it is adding the > letter F >
This is code 39 mod 43 - the last digit is a checksum, calculated by SUM(characters) modulo 43, i.e., "12345" => (1+2+3+4+5) = 15. 15%43 = 15. Character 20 => F. You either need to turn OFF the generation of the checksum in FoxBarCodes or turn it ON in the bar code reader itself. It's a handy feature, especially if dealing with a lot of dirty, difficult to read bar codes: the reader itself will tell you if it is reading the correct code. References: http://www.morovia.com/education/symbology/code39.asp http://en.wikipedia.org/wiki/Code_39#Code_39_mod_43 -- Ted Roche Ted Roche & Associates, LLC http://www.tedroche.com _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/CACW6n4tdOgm7Sdc5QntaWBa7V39S0d=jw=q7feekrshwdrj...@mail.gmail.com ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
