A feature of EAN-128 that distinguishes it from other barcodes of the CODE-128 format is the presence of the Function Command 1 (FNC1) before the encoded data.
FNC1 is not encoded in user data as it is only an internal barcode instruction. It allows you to identify the encoded sequence of characters as an EAN-128 barcode.Dimensions of EAN-128:
Maximum length, including side clean zones: 165 mm; up to 48 characters are encoded in this space.
EAN-128 is not a barcode symbology language, but a standard that defines the data type and format through FNC1 and the Application Identifier.Structure of EAN-128:
The composition of the EAN-128 barcode is typical. It contains the following data:
- Start symbol (START-A, START-B, START-C);
- Application ID (Al);
- Encoded data;
- Control symbol;
- Stop symbol.
Knowing this information, you can decrypt the barcode.
Al (Application Identifier) - these are groups of numbers in brackets before the encoded data, from 2 to 4, for example, (01), (12), (320Y), etc. They indicate the nature of the product and serve to interpret the following digits, which describe the type and length of the data.