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42 Printing Labels
4.1 Programming Commands
To prompt the Printer for a command sequence, the Printer must first receive a
special character called an “attention getter”, which informs the Printer that it
is about to receive a command and the type of command it will be. Immediate
Commands, System Level Commands, and Font Loading Commands each have
their own attention getter. The attention getter character is followed by a
"command character" that tells the Printer what action to take.
ASCII
Char.
Decimal
Value
HEX
Value
DOS
Prompt
Attention Getter For
SOH 1 01 Ctrl A Immediate Commands
STX 2 02 Ctrl B System Level Commands
ESC 27 1B Crtl [ Bitmapped Font Loading Commands
Table 4-1 Attention Getters
When the Printer receives an "immediate" command it will stop whatever it is
doing and perform that command. Commands of all types must be in the
following sequence:
1. Attention Getter
2. Command Character
3. Command Parameters, (if any).
Command
Character
Printer
Responds?
Command
# Y Reset
A Y Send ASCII Status String to Host
B N Toggle Pause
C N Cancel
D N SOH Shutdown
E Y Send Batch Quantity
F Y Send Status Byte
Table 4-2 Immediate Commands
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