| 4. Message Structures |
|
|
UPCA | You must send a leading zero, 11 digits of |
| data and a check digit (13 digits total). |
UPCE | The printer automatically prints a leading |
| zero for this bar code. You must send |
| data and a check digit (7 digits total). |
EAN13 | You must send 12 digits of data and a |
| check digit (13 digits total). |
EAN8 | You must send 7 digits of data and a |
| check digit (8 digits total). |
| NOTE: If the check digit is incorrect or |
| omitted from a UPC or EAN bar |
| code, the printer will automatically |
| place the correct check digit in the |
| bar code. |
I 2 of 5 | This bar code has no check digit. The |
| printer automatically prints the start and |
| stop characters, so only the data must be |
| sent. The length of the data is variable. If |
| the data has an odd number of digits, add |
| a leading zero to make the length even. |
Code 39 | The start and stop characters must be |
| placed at the beginning and end of the |
| data before it is sent to the printer. The |
| start and stop character is an asterisk (*). |
| The length of the data is variable. |
Codabar | The start and stop characters must be |
| placed at the beginning and end of the |
| data before it is sent to the printer. The |
| acceptable start and stop characters are a |
| combination of lowercase a, b, c, or d. |
| The length of this data is variable. |
Code 128 You can send characters for Function Codes
∙fixed data when defining a code 128 field