M-S Cash Drawer 7193 User Manual
Communication
7193 Owner’s Guide
May 1996
46
Using DOS to Send Commands
One way of getting commands to the printer is to send them directly from DOS.
For example, the command
For example, the command
COPY CON: COM1:
sets the computer up such that the Hex code corresponding to any key that was
pressed would be sent to the communication port COM1 when the COPY mode
is exited. If the printer is connected to COM1, then the data will go to the printer.
pressed would be sent to the communication port COM1 when the COPY mode
is exited. If the printer is connected to COM1, then the data will go to the printer.
Exit the COPY mode by typing
CTRL Z
and then pressing the ENTER key. Once the computer knows to direct data from
any print command to the proper port, commands can be sent from any software
program.
any print command to the proper port, commands can be sent from any software
program.
Using BASIC to Send Commands
In BASIC, printer commands are sent as a string of characters preceded by the
LPRINT command. For example,
LPRINT command. For example,
LPRINT CHR$(&H0A)
sends the hexadecimal number 0A to the printer, which causes the printer to
print the contents of its print buffer. Previously sent commands tell the printer
exactly how this data should appear on the paper. For example,
print the contents of its print buffer. Previously sent commands tell the printer
exactly how this data should appear on the paper. For example,
LPRINT CHR$(&H12); "ABC"; CHR$(&H0A)
sends the Hex numbers 12 41 42 43 0A to the printer. This causes the printer to
set itself to double wide mode (12), load the print buffer with “ABC” (41 42 43),
and finally, print (0A). Again, the communication link that the BASIC program
outputs to must be matched to that of the printer.
set itself to double wide mode (12), load the print buffer with “ABC” (41 42 43),
and finally, print (0A). Again, the communication link that the BASIC program
outputs to must be matched to that of the printer.
RS-232C Interface
The RS-232C interface uses either XON/XOFF or DTR/DSR protocol. For
XON/XOFF, a particular character is sent back and forth between the host and
the printer to regulate the communication. For DTR/DSR, changes in the
DTR/DSR signal coordinate the information flow.
XON/XOFF, a particular character is sent back and forth between the host and
the printer to regulate the communication. For DTR/DSR, changes in the
DTR/DSR signal coordinate the information flow.
The RS-232C version of the 7193 offers the standard options which are selected
with the DIP switches. The switch settings are shown on page 50.
with the DIP switches. The switch settings are shown on page 50.