Datamax A-Class, Руководство программиста

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Appendix G – Bar Code Details
Class Series 2 Programmer’s Manual 221
Field Valid Inputs Meaning
a
1,2,3 and 4 Rotation
W1
W1 Fixed value, extended bar code set
b
D and d
Selects the QR bar code formatting mode, where:
D = Manual formatting. Allows the data string (hh…h) to
be entered with a comma (,) as a field separator;
fields are optional per QR Code specifications, and the
first field indicates Model 1 or Model 2 QR Code
(Model 2 is the default).
d = Automatic formatting. Allows the data string (hh…h)
to be data only.
c
1 to 9, A to Z, and a to z
Module size horizontal multiplier Each cell in the bar code is
square, therefore “c” and “d” must be equal. Depending on
the conversion mode (
<STX>n
or
<STX>m
), each unit
indicates a cell dimension of .01 inch or .1 mm.
d
1 to 9, A to Z, and a to z Module size vertical multiplier. (See explanation for “c”,
above.)
eee
000 to 999 No effect; must be numeric
ffff
0000 to 9999 Label position, row
gggg
0000 to 9999 Label position, column (see Appendix J)
hh…h
Valid ASCII character
string, followed by (a)
termination character(s)
QR Code data string (see Generation Structure, below).
Generation Structure
The data input structure (hh…h) is as follows:
Auto Format (W1d)
With bar code identifier “d”, the data begins after the last character of the column
position field, and does not include any command characters. The data string is
terminated with a termination character, usually a 0x0d hex that occurs twice in
succession. The bar code symbol will have the following characteristics:
1.
Model 2
2. Error Correction Code Level = “M” (Standard Reliability Level)
3. Mask Selection = Automatic
4. Data Input Mode = Automatic
[1]
Example: