Worth Data RF Laser UPC-E Checksum Calculation

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UPC-E Checksum Calculation

Use the sample data of 123456 to demonstrate the UPC-E checksum

calculation:

1. The 6 digit UPC-E code is converted to a 10-digit code, using an

expansion scheme based on the sixth digit:

If the code

ends in: UPC-E Data Insertion Digits Insertion

Position 10 digit code

0 abcde0 00000 3 Ab00000cde

1 abcde1 10000 3 Ab10000cde

2 abcde2 20000 3 Ab20000cde

3 abcde3 00000 4 Abc00000de

4 abcde4 00000 5 Abcd00000e

5 abcde5 0000 6 Abcde00005

6 abcde6 0000 6 Abcde00006

7 abcde7 0000 6 Abcde00007

8 abcde8 0000 6 Abcde00008

9 abcde9 0000 6 Abcde00009

Because the sample UPC-E code ends in a 6, the insertion digits 0000 are

inserted at the sixth digit (insertion position 6):

1234500006

2. Add the Number System Character of 0 to the sample data:

01234500006

3. Use the UPC-A check digit calculation described in the previous

section to produce a check digit as if it were a UPC-A code. The

check digit for the sample data is:

5

4. The complete 8 digit code consists of the Number System Character,

the original 6 digit code and the check digit:

01234565

Contents

Main Table Of Contents Introduction Installation Components of RF Laser Readers Scanner Beeps and LEDs (what they mean) USB Installation Installing the R/F Reader with a dedicated serial port Installing the R/F Reader between a computer and terminal R/F Laser Serial Model Pin-outs Configuring the RF Laser Reader for your computer and application Laser Scanning Instructions Using The RF Laser Setup Menu RF Laser Setup Parameters Channel Code 3 of 9 (Code 39) UPC/EAN Code 128 MSI and Plessey Codabar 2 of 5 Code 2 of 5 Data Length Code 93 Terminator characters (This applies to the BASE only) Beep Options Preamble Postamble Characters Set ID Character Link Test Code Reset DIFFICULT CODE SETUP OPTIONS Page RF Base Station Parameters Baud rate Data bits Parity Stop bits Test the RF Laser with your computer TEST LABEL Page Radio Considerations Operating Instructions Operational Details Range Accumulate Mode 4 5 6 1 2 3 0 Clear Buffer Enter Function/Control Key Support Page Troubleshooting All Models Troubleshooting USB Trouble Shooting Windows XP: Win98/ME: Win2000: Serial Troubleshooting Page Appendix A Changing Jumpers and Channels Page Appendix B Recharging the Batteries Appendix C Specifications for Code 39 *C39* Code 39 Advanced Features and Functions Mod 43 Check Character Full ASCII Extension to Code 39 Appendix D Code 93 Specifications Appendix E Codabar Specifications Codabar start/stop transmission Appendix F Code 128 Specifications UCC-128/ EAN-128 Page Appendix G Interleaved 2 of 5 Code Interleaved 2 of 5 Mod 10 check digit calculation Page Appendix H UPC Specifications UPC 2 and 5-character supplemental codes ISBN Specifications The UPC/EAN checksum character Checksum calculation for UPC-A, EAN-13 and EAN-8 UPC-E Checksum Calculation Appendix I MSI/Plessey Specifications Page RF Laser Setup Menu */+/* */-/* *--* */0/* */K/* */1/* */2/* */+/* */-/* Code 3 of 9 UPC/EAN */A/* */B/* 2 of 5 Code 2 of 5 Length */C/* Page Page *%U* Page Page Index 2 8 A B E F H I L S T U V W