Datamax Allegro 2 manual Programming Commands, Immediate Commands

Setting Up Your Printer

2.5Programming 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	HEX	DOS	Attention Getter For
	Value	Value	Prompt
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	Must Enter	Printer	Command
Character	Parameters	Responds
#	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

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