Epson C204001 - DFX 8500 B/W Dot-matrix Printer, User Manual

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The valid data of each barcode type is described below. If invalid data is
included in the barcode data string, the barcode is not printed.
Barcode type Barcode data
EAN13
EAN-8
UPC-A
UPC-E
Interleaved 2 of 5
POSTNET
Code 39
Code 128
0-9 (Hex 30-39)
0-9 (Hex 30-39)
0-9 (Hex 30-39)
0-9 (Hex 30-39)
0-9 (Hex 30-39)
0-9 (Hex 30-39)
0-9 (Hex 30-39), (Hex 41-5A), (Hex 20, 24, 25,
2B, 2D, 2E, 2F)
Set A, Set B, Set C
The following conditions are required for barcode printing:
q
Barcode printing is always performed unidirectionally. However,
when it is mixed with raster bit image data, neither barcode nor raster
bit image data is printed.
q
A barcode is not printed when part of the barcode extends beyond the
right margin.
q
When barcode data and text data are mixed in a data sequence,
barcode and text are printed in the same place.
q
The start and stop (*) characters of Code 39 are added to human
readable characters.
q
The initial data of Code 128 (Set A, B, or C) is identified as the first
data of Code 128, and must be hexadecimal (41, 42, and 43
respectively).
q
When Code 128 Set C and Interleaved 2 of 5 are selected, barcode data
requires an even number data string. However, if an odd number
string is sent, a 0 is automatically added, making it an even number
data string.
q
The barcode print start position (except POSTNET) is always 7/72
inch above the baseline.
B
R
Peony Rev.C
A5 size Appendix B
98/01/07 Pass 3
Printer Commands and Character Tables B-5