Real Time Status Transmission - NCR 7158 Owner's Manual

Real Time Status Transmission

GS Sequence
ASCII:
Hexadecimal:
Decimal:
Value of n: GS/DLE Sequence
1 = Transmit printer status
2 = Transmit RS-232C busy status
3 = Transmit error status
4 = Transmit receipt paper status
5 = Slip paper status
Transmits the selected one byte printer status specified by n in Real
Time according to the following parameters. This command includes
two sequences: GS and DLE.
Exceptions:
The command is ignored if n is out of range.
An application using the DLE sequence must send EOT within 100
milliseconds of DLE or the printer will misinterpret the DLE and
execute a Clear Printer command. Avoid this possibility by using the
1D 04 n sequence, which is handled exactly the same as 10 04 n.
DLE Sequence
GS EOT n DLE EOT n
1D 04 n 10 04 n
29 4 n 16 4 n
Chapter 7: Programming Guide 7-103