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Option 31 (Calculate Check Digit) ––––––––––––––––––––––––––––
Do not use this option with Option 42, Maxicode, Code 39, or
Code 93 bar codes, or fields with predefined check digits,
such as UPC, EAN, and Code 128 bar code fields.
Example R,31,G,5 p
Syntax R,31,gen/ver,check digit # p
R1. R Indicates option header.
R2. 31 Indicates Option 31.
R3. gen/ver Enter G to generate a check digit.
R4. check digit # Specifies a check digit scheme. Enter a number that
identifies a check digit scheme that has been defined.
For more information, refer to Chapter 3, "Using Check
Digits."
J640 Programmer’s Manual
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