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How do I calculate a MOD10 Check Digit for GS1-128 and other Code 128 Standards?

I need to generate a MOD10 Check Digit for GS1-128. How do I do this with your products using Code 128?




11-29-12     752 day(s) ago     Views: 1921

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Ben

Best Answer

Several standards of Code 128 may require a MOD10 Check Character (Digit) calculation. Some of these standards include GS1-128, SSCC-18, and SCC-14.

When calculating a MOD10 for Code 128, the AI (Application Identifier) is not part of the calculation. Let's use an SSCC18 value as an example:

(00)00801234999999999

The (00) is the AI character and will not be part of the MOD10 calculation. However, the remaining data, 00801234999999999, will.

When the ApplyTilde option is enabled, some IDAutomation products will allow the user to encode FNC for AIs using the parentheses. If your product does not have this feature, then encode the FNC using the Tilde Method

To calculate the MOD10, ApplyTilde must be enabled.


Let's encode and calculate the check digit for the value above using the Tilde method.


~2120000801234999999999~m17


The ~212 identifies the two digit AI. For three digits use ~213, four digits use ~214, etc.

The ~m17 looks at the remaining data that is not an AI, and calculates the check digit.

Using the Parentheses method is very similar:

(00)00801234999999999~m17


The check digit is 7.

The scanned result is 00008012349999999997



How do I know what to set ~m to?
You must refer to the standard that you are required to generate.



Posted 752 day(s) ago

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