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XPress DR+ User Guide 28
Chapter 4: XPress DR+W
The wireless version of the XPress DR+ (XPress DR+W) provides serial-to-wireless
network connectivity as an alternative to wired Ethernet connectivity. The wireless unit
uses IP protocol (TCP for connection-oriented stream applications and UDP for datagram
applications), enabling virtually any serial device or equipment to be remotely accessed,
controlled, monitored, or shared on an 802.11b/g wireless network. The XPress DR+W
provides a fully integrated solution that combines an operating system, embedded Web
server, full TCP/IP protocol stack with an 802.11b/g transceiver supporting WEP and
WPA security.
Application Examples
The XPress DR+W has an 802.11b/g transceiver in addition to its serial and Ethernet
ports. Each serial port is connected to the serial communication port of a device. The
wireless transceiver connects to another wireless device or to an Access Point (AP). This
section includes typical scenarios for using the XPress DR+W.
Serial Tunneling – Network
Figure 4-1. Serial Tunneling Infrastructure Network Example
MARCOM IS FIXING
A PC connected to an AP via an Ethernet connection and a PC with a wireless
connection to the AP LAN access the XPress DR+ W as though they are directly