Unisys E-@CTION EFP9800 - Manual (Page 153)

EFP9800 ESC/POS Commands
3255 4073– 002 6– 63
Do not use this command within the data sequence of another command that
consists of two or more bytes. For example, if you send the Set Line Spacing
(ASCII code ESC 3 n) to the printer, and a Real Time Request to Printer
command (10 05 n) interrupts before n is received, the code 10 for 10 05 n is
processed as the value of n for ESC 3 n.
The Real Time Request to Printer command is transmitted any time the
command sequence 10 05 (1
≤
n
≥
3) is received, even if the sequence is part of
another command.
n = 1 is available for errors.
n = 2 is available for errors. The printer retains settings, such as Line Spacing
and Print Mode, that were in effect when the error occurred. Use the Initialize
Printer command (1B 40) together with this command to completely initialize
the printer. This command is enabled even if the printer is unselected using the
Select Peripheral Device Status command (1B 3D).
n = 3 is available only when the printer is waiting for the insertion of a slip. It is
ignored in all other states. Before performing this command, use the Real Time
Status Transmission command (10 04 n) to ensure that slip is selected and that
the printer is in the slip waiting state. After the printer is released from the slip
waiting state, journal paper is selected. After the slip waiting state is canceled,
the receive and print buffers are cleared. This command is enabled even if the
printer is unselected using the Select Peripheral Device Status command (1B
3D).