Chapter 4: Programming Commands94
Revision D 12/09
A799-PG00001D
Real time printer status transmission
ASCII GS ENQ
Hexadecimal 1D 05
Decimal 29 5
Transmits one byte status of the printer in real time.
Value of byte:
Bit Status Hex Decimal Function
0 O 00 0 Paper adequate.
On 01 1 Paper low (if paper low sensor enabled).
1 O 00 0 Paper adequate.
On 02 2 Paper low (if paper low sensor enabled).
2 O 00 0 Cover closed.
On 04 4 Cover open.
3 O 00 0 Not busy at the RS-232C interface.
On 08 8 Printer is busy at the RS-232C interface.
4 O 00 0 One or both cash drawers open.
On 10 16 Both cash drawers closed.
5 O 00 0 Fixed to o.
6 O 00 0 No error condition.
On 40 64 Error condition exists in the printer.
7 On 80 128 Fixed to on.
Exceptions
Unlike the A793, that had a dedicated connector and resultant dedicated status reporting for each cash drawer, the A799
has a single connector that shares data reporting from either cash drawer. When either cash drawer is open, an open status
is reported by the printer.
Real time commands disabled
ASCII US z n
Hexadecimal 1F 7A n
Decimal 31 122 n
Value of n: 0 = enable
1 = disable
This command is used to disable real time commands. They are disabled prior to sending graphic or other data to the
printer that may contain embedded real time commands.
The command is a batch command and processed in the order received.
