Appendix F
Code 128 Specifications
Code 128 is a very powerful bar code, combining an extensive character set and variable length with compactness and error checking. The character set contains
all 128 ASCII characters with each character made up of
AB123456 three bars and three spaces. Each element (bar or space) varies from one to four units in width, totaling 11 units of
width per character. Code 128 contains two levels of error checking:
Each character is checked for internal parity, and
The last character is a checksum.
Code 128 has three subsets, A, B and C. Subset A contains alphanumeric characters and unprintable control characters, subset B contains alphanumeric characters plus printable control characters and subset C contains only numeric characters and uses a
The Code 39 features of Accumulate Mode, Caps Lock ON and Caps lock OFF also apply to Code 128.
UCC-128/ EAN-128
The WDP outputs the following for the special function codes and start sequences:
]C1 Start C/Function Code 1
^] | (GS) Function Code 1 as a variable string terminator |
If MOD 10 UCC 128 is enabled, theWDP expects only 20 digit,