Worth Data RF Terminal 7000 - Manual (Page 92)

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 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 2-character encoding scheme to create a more compact bar
code. Code 128 uses an internal Mod 103 check character that is not displayed by the bar
code reader. Code 128 bar codes can be made up of only one subset or may be a
combination of several.
The Code 39 features of Accumulate Mode, Caps Lock ON and Caps lock OFF also apply to Code 128.
UCC-128/ EAN-128
UCC-128/EAN-128 Code is a subset of Code 128 adopted by the UCC and EAN council’s for use as a
shipping label symbology. UCC/EAN-128 bar codes always start with a Function Code 1 character. In
addition, a Function Code 1 character terminates all variable length fields unless they are the last field in the
bar code.
The RF Terminal 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 UCC/EAN 128 is enabled, the reader looks for the Start C/Function Code 1 to indicate a UCC/EAN 128
bar code.
The UCC Serial Shipping Container Code specification calls for a 19 digit UCC/EAN 128 code with an
additional Mod 10 Check digit (20 digits in all). The Mod 10 Check digit is calculated the same as the
Interleaved 2 of 5 example in Appendix D. It is the data length as well as the MOD 10 check digit that
distinguishes the UCC Serial Shipping Container Code from other UCC /EAN 128 bar codes.
Scanning the appropriate bar codes on the RF Terminal Setup Menu enables UCC/EAN 128; or you can use
the keypad in the PROGRAMMING MODE “Change Setup” option. If UCC/EAN 128 is enabled, you will
be able to read both standard Code 128 bar codes as well as the UCC/EAN 128 bar codes with the Function
1 character and the Mod 10 check character.
UCC-128 Shipping Container Code
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