2: Introduction
XPress™ DR+ Industrial Device Server User Guide
16
Port Numbers
Every TCP connection and every UDP datagram is defined by a destination IP address and a port
number. For example, a Telnet application commonly uses port number 23. A port number is
similar to an extension on a phone system.
You can associate the unit's serial channel (port) with a specific TCP/UDP port number. Port
number 9999 is reserved for access to the unit's Setup (configuration) Mode.
Configuration Methods
After installation, the XPress DR+ requires configuration for the unit to operate correctly on a
network. There are three basic methods for logging into the XPress DR+ and editing the
configurable settings.
DeviceInstaller
: Configures the IP address and other network settings on the XPress DR+ using
a Graphical User Interface (GUI) on a PC attached to a network.
.)
Web Manager
: Through a web interface, configures the XPress DR+ settings using Web
Manager. (See
5: Configuration Using Web Manager
Serial and Telnet Ports:
There are two approaches to accessing Setup Mode: making a Telnet
connection to the network port (9999) or connecting a terminal (or a PC running a terminal
emulation program) to the unit’s serial port.
