Datamax Allegro 2 - Manual (Page 31)

Setting Up Your Printer
Allegro2 23
2.5 Programming Commands
In order to be ready for a command sequence, the Printer must first
receive a special character called an “attention getter” that 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 Ctrl [ Font-Loading Commands
Table 2-5 Attention Getters
When the Printer receives an Immediate Command it will cease
whatever it is doing and perform that command. Commands of all
types must be in this sequence:
1. Attention Getter
2. Command Character
3. Parameters that must be entered by the user (if any).
Command
Character Must Enter
Parameters Printer
Responds Command
# N Y Reset
A N Y Send ASCII status string
B N N Toggle pause
C N N Cancel
D N N SOH shutdown
E N Y Send batch quantity
F N Y Send status byte
Table 2-6 Immediate Commands