A714 Owner’s Guide
Chapter 5: Communication
April 1998
23
DTR/DSR Protocol
DTR/DSR Protocol
The DTR signal is used to control data transmission to the printer. It is driven low when
the printer is ready to receive data and driven high when it cannot accept any more data.
Data is transmitted from the printer after it confirms that the DSR signal is low.
Connectors
Connectors
This section describes the pin settings for the connectors and the RS-232C interface
parameters. The RS-232C parameters are selected in Printer Setup mode. For more
information, see “Printer Setup Mode” on page 26. The RS-232C parameters must match
those of the host computer.
RS-232C Communication Connector Pin Assignments
RS-232C Communication Connector Pin Assignments
The following illustrations show the RS-232C communication connector and pin
assignments. The connector is a female DB-25F connector and is located at the back of the
printer.
RS-232C 25-Pin Communication Connector Pin Assignments
RS-232C 25-Pin Communication Connector Pin Assignments
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