Setup
55
Serial Interface
The printer uses a Null Modem (cross-over) cable for DTE communications. The required cable must have
a nine-pin “D” type (DB-9P) male connector on one end which plugs into the mating (DB-9S) serial port
located on the back of the printer. The other end of this signal interface cable connects to a serial port on
the host computer. For pin-out information, refer to Serial Port Interface.
The serial port communication settings between the printer and host (typically a PC) must match for
reliable communication. The Bits per second (or Baud rate) and Flow control are the most common
settings that get changed.
Serial communications between the printer and the host computer can be set by:
• ZPL programming ^SC command
• Resetting the printer to its default printer configuration.
Factory defaults for serial communication settings are: 9600 baud, 8 bit word length, NO parity, 1 stop
bit, and XON/XOFF (‘Software’ data flow control in the Windows based host system).
Important • Do not use RS-232 cable adapter dongles (DTE DCE) with this printer. Some dongles can interfere
with the operation of USB Host port devices at printer power up.