Codabar (Rationalized); Code 128 (Manual Compression); Figure 18 Code 128 Subset Switching - Microcom LDS2 Programming Manual

Barcodes
4.2.1

Codabar (Rationalized)

Codabar is a variable length linear symbology that used in libraries, blood banks, and in the
air parcel business. Codabar is capable of encoding the 16 following characters:
0123456789-$:/. + and the four start/stop characters ABCD. This symbol uses 2:1, 3:1, 4:2,
5:2, and 8:3 ratios, which may be entered in the AI parameter.
CI text equivalent codes:
4.2.2

Code 128 (Manual Compression)

The Code 128 bar code is a variable length, high density, alphanumeric symbology that
used worldwide. This bar code uses three subsets (A, B, and C) which allows for the
encoding of the full 128 ASCII character set along with special control codes. This bar code
uses manual compression, which provides full control by manually shifting between the
available subsets using the special function access codes. The codes (#n) are placed
within the data string to access the desired functions listed in the table below.
Code
#0
#1
#2
#3
#4
#5
#6
#7
#8
#9
##
Table 11
When using manual compression the printer defaults to subset B if no start code is defined.
The printer will also not attempt to compress the data unless subset C is used. Once in
subset C the user must send the appropriate code (#n) to return to either subset A or B.
4-2
@codabar
SUBSET A
FNC3
FNC2
SHIFT
CODE C
CODE B
FNC4
FNC1
START
N/A
N/A
#
Code 128 Special Function Access
Figure 18 Code 128 Subset Switching
SUBSET B SUBSET C
FNC3 N/A
FNC2 N/A
SHIFT N/A
CODE C N/A
FNC4 CODE B
CODE A CODE A
FNC1 FNC1
N/A N/A
START N/A
N/A START
# N/A
LDS2 Programming Manual - 880019-0202
Chapter 4