M-S Cash Drawer 7193 User Manual

Commands

7193 Owner’s Guide

May 1996

84

For RS-232C printers, these commands enable the printer to communicate with
the host system following the selected handshaking protocol, either DTR/DSR or
XON/XOFF. They are stored in the printer's data buffer as they are received, and
are handled by the firmware in the order in which they were received.

When a fault occurs, the printer will go busy at the RS-232C interface and not
respond to either of the Printer Status commands. If the fault causing the busy
condition can be cleared, such as by loading paper, or letting the thermal
printhead cool down, the printer will resume processing the data in its receive
buffer.

Printers manufactured after mid 1996 include Real Time commands which are
handled when the printer is busy at the RS-232C interface. See the following
section, “Real Time Commands,” for details about these commands.

Transmits current status of the cash drawers. One byte is sent to the host system.
This command is available only on RS-232 printers.

In DTR/DSR protocol the printer waits for DSR = SPACE. If a drawer is not
connected, the status will indicate closed.

1B 75 0

27 117 0

ESC u 0

0

Drawer 1 Closed

Drawer 1 Open

1

Drawer 2 Closed

Drawer 2 Open