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Operations
Select a Communication Interface
22
13290L-001 Rev. A
S4M User Guide
10/21/05
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 
 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.
• 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
Printer
Computer
Null modem adaptor
(if using a standard
modem cable)
Male
25
9
9
9
50 ft. (15 m) maximum