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15
Operations
Select a Communication Interface
10/27/05 S4M Maintenance Manual 13291L-001 Rev. A
Types of Connections
The method of connecting the printer to a data source depends on the communication options
installed in the printer and the host. This section provides basic information about common
interfaces.
When communicating via the serial data port (RS-232), the baud rate, number of data and stop
bits, the parity, and the XON/XOFF or DTR control should be set to match those of the host
computer. See Password Level 3 Parameters on page 59 to configure these parameters. When
communicating via the parallel port or the USB port, the previously mentioned parameters do
not apply.
RS-232 Serial A serial communication method consisting of data and control signals;
available as a standard feature on most PCs and other hosts. See Serial Data Port on page 360.
Advantages: Cables and connectors are readily available from computer equipment stores
and suppliers; easy to connect; two-way communication between the host and the printer.
Disadvantages: Slower than the parallel connection; limited to 50 feet (15.24 m) of cable.
Figure 10 • Communicating Using a Serial Data Port
1Null-modem adaptor (if using a standard modem cable)
29-pin male connector, connected to printer or null-modem adaptor
325-pin female connector, connected to computer
49-pin female connector, connected to computer
5Maximum cable length = 50 ft. (15 m)
1
Print er Comput er
5
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