Datamax E-Class Mark II Programmer's Manual page 243

Note that there is no auto-switching from or to Subset A. Standard switches are still
used (see table below).
Subset A: Includes all of the standard uppercase alphanumeric keyboard characters
plus the control and special characters.
Subset B: Includes all of the standard uppercase alphanumeric keyboard characters
plus the lowercase alphabetic and special characters.
Subset C: Includes the set of 100 digit pairs from 00 through 99 inclusive, as well as
special characters. EAN128 Subset C is used for double density encoding of numeric
data.
Special Character Handling: Characters with an ASCII value greater than 95 are
considered special characters. To access these values, a two-character reference table is
built into the printer; see table below. As an example, to encode FNC2 into an EAN128
Subset A bar code, send the ASCII & (DEC 38, HEX 26) followed by an ASCII B (DEC 66,
HEX 41). Code FNC2 will be encoded.
ASCII
96
97
98
99
100
101
102
Control Codes: Control character encoding into Code 128 Subset A by sending these
control codes:
Class Series 2 Programmer's Manual
Appendix G – Bar Code Details
2 CHAR
&A
&B
&C
&D
&E
&F
&G
Table G-5: Special Character Handling
` = NUL
a through z = 1 - 26
{ = ESC
| = FS
} = GS
~ = RS
ASCII 127 = US
CODE A CODE B
FNC3 FNC3
FNC2 FNC2
SHIFT SHIFT
CODEC -NA-
CODEB FNC4
FNC4 CODEA
FNC1 FNC1
CODE C
-NA-
-NA-
-NA-
-NA-
-NA-
CODEA
FNC1
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