New User? Sign Up  |  Sign In  |  Help
IDAutomation Logo
Barcode support and
tutorials from IDAutomation
and the community.		 Click for the BBB Business Review of this Computers Hardware, Software & Services in Tampa FL
Resolved Questions

Manual Calculation of Checksum Character for Code 128


I am using IDAutomation Code 128 Fonts and building an encoded string in a product called Clarion for Windows.

I use the formula given to calculate a checksum for a Code128B barcode as follows – the first one works, the second does not:

1. D10359 - Checksum Calc - 104 + (36x1) + (17x2) + (16x3) + (19x4) + (21x5) + (25x6) = 553

Divide by 103 - gives 5 plus the remainder of 38 - so the ASCII character is 38 + 32 = 70 which is 'F' if I use the ID Automation check digit calculator and font encoder - that also gives 'F'.

Therefore, with a start char of ASCII 204 and a stop char of ASCII 206, I can build the string in my software, which produces the correct barcode.

2. D50224 - Checksum Calc - 104 + (36x1) + (21x2) + (16x3) + (18x4) + (18x5) + (20x6) = 512

Divide by 103 - give 4 plus the remainder of 100 - if I calculate the ASCII as 100 + 32 = 132 - if I use ASCII 132 as the check digit, I get a bad barcode. IDAutomation states the valid check digit should be ASCII 200.

It seems many of my barcodes come out fine, but a certain range of the formula does not seem to work.

Is there something I am not understanding for certain ranges of characters?


Application: Clarion for Windows

11-09-14     9.3 year(s) ago    

  Report Abuse

 

James

Best Answer

The forum post, Manually Calculate Check Digit for Code 128, addresses this issue.

Posted 9.3 year(s) ago

(0)
(0)
  Report Abuse
 
Find Interesting
 
Email to Others
 
Bookmark
 
Subscribe to Answer Alert
No comments yet.     Be the first to comment.

 Categories
Email this question link to friends
You must enter an email address, if name is entered or vice-versa for each friend.
Friend #1 -
Friend #2 -
Friend #3 -
Friend #4 -
Friend #5 -
  Your comment on this question
  |         |  
bold  italic  underline  strike       big  small       superscript  subscript 
  Allows to add a link. Added links would only be converted to actual clickable link, when the domain of the link is white-listed by administrator.
Caption :
Link URL :
(Must starts with "http://")
Add  |   Cancel
  Allow to insert an image. Must be among the following file types - *.jpg, *.gif, *.png & *.bmp.
Image Url :   Upload New
(Image url must always starts with " http:// ")
Width : pixels
(Must not be greater than 450px. Enter 0px for no resize)
Add  |   Cancel
  Allow to insert YouTube video. Insert the video embed code.
Embed Code :
Add  |   Cancel
Up to 5000 Characters are allowed. Current Count: 0
  Your comment on this answer
  |         |  
bold  italic  underline  strike       big  small       superscript  subscript 
  Allow you to add a link. Added links would only be converted to actual clickable link, when the domain of the link is white-listed by administrator.
Caption :
Link URL :
(Must start with "http://" or "https://")
Add  |   Cancel
  Allow to insert an image. Must be among the following file types - *.jpg, *.gif, *.png & *.bmp.
Image Url :   Upload New
(Image url must always start with "http://" or "https://")
Width : pixels
(Must not be greater than 450px. Enter 0px for no resize)
Add  |   Cancel
  Allow to insert YouTube video. Insert the video embed code.
Embed Code :
Add  |   Cancel
Up to 5000 characters are allowed. Current Count: 0

You may answer and comment on any thread according to the Terms and Conditions.

 © Copyright 2021 IDAutomation.com, Inc., All Rights Reserved. Legal Notices.

 Barcode Fonts | Components | Scanners | Support | Contact Us
Training Videos on YouTube Join us on Google Plus Join us on LinkedIn Follow us on Twitter Like us on Facebook