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Appendix G – Bar Code Details

194

Control Codes: By sending these control codes, control characters can be encoded into

a Code 128 Subset A bar code (e.g., ABC{DE will be encoded as ABC<ESC>DE):

Control Code in the Bar Code Data Stream Encoded Control Character Result

` NUL

a through z 1 - 26

{ ESC

| FS

} GS

~ RS

ASCII 127 US

The following example prints a Code 128 bar code:

<STX>L

D11<CR>

1E000000015010001234567890<CR>

121100000000100Barcode E<CR>

F: EAN-13

Valid Characters: 0-9

Length: 13 digits. If the user provides 12 digits, the printer will compute the checksum.

If the user provides the checksum, the printer will check that it matches the expected

checksum. If it does not match, the printer will print all zeros and the expected

checksum. See Appendix O.

Valid bar widths: The fourth character of record is the width of the narrow bar in dots.

All other bars are a ratio of the narrow bar (2 times, 3 times, and 4 times the narrow

bar width).

The following example prints an EAN-13 bar code:

<STX>L

D11<CR>

1F0000000150100012345678901<CR>

121100000000100Barcode F<CR>

1 2 ... 197 198 199 200 201 202 203 204 205 206 207 ... 295 296

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