Appendix G – Bar Code Details
Class Series 2 Programmer’s Manual 229
preceding the FNC1 are Application Indicators assigned by AIM
International. The printer does not check AI validity.
When <ESC>0 is anywhere else in the data stream, a <
G
S
> replaces it in
the bar code symbol, as with UCC/EAN 128 field separators.
<ESC>n
– Is encoded as FLG(n), and is interpreted as signaling Extended Channel
Interpretation. When the value of n is from 1 to 6, it signals that the
following n digits comprise an extended channel identifier for use with ECI
compliant bar code scanners. An erroneous bar code symbol may result
from failing to follow <ESC>n with n digits. Any <ESC>0 following
<ESC>n and not within the n digits will be encoded as FLG(0). In the
context of a FLG(n), any backslash “\” (92
10
) will be interpreted by the
scanner as two backslashes “\\”.
Example 1: The variable length example encodes “AZTEC” with no ECI input, and 23%
error correction, and prints the bar code. A line of text is also printed.
<STX>L
D11<CR>
1W1f00000001501000000AZTEC<CR>
121100000000100Barcode W1f<CR>
E
Barcode W1f
Example 2: The specified length example includes a byte count field for all bytes that
follow until the end of the bar code data. The byte count is 17. The
symbology encodes “AZTEC<CR>barcode”, and prints the bar code. Notice
that a <CR> does not terminate the bar code format record. A line of text
is also printed.
<STX>L
D11<CR>
1W1F000000015010000170000AZTEC<0x0D>barcode
121100000000100Barcode W1F<CR>
E
Barcode W1F
Functions Not Supported
• Structured Append
• Reader Initialization Symbol Generation
• Module shaving
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