
2: Introduction
XPress™ DR+ Industrial Device Server User Guide
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Figure 2-1. XPress DR+ (Front)
The XPress DR+ supports RS-232 through RJ45 connectors. It also supports
RS-422/485 by means of screw terminals (Serial Port 2 only). It has two Ethernet Ports
10/100Base-T and –TX with Auto MDI/MDI-X by means of RJ45 connectors. You can use either
Ethernet port for daisy-chained configuration.
Industrial Automation Protocols
The XPress DR+, adapted to multiple factory environments, can unite any mixture of equipment
from industrial automation vendors into a single reliable pipeline. This new and open
infrastructure opens the way for data to flow in real time from all your plant devices up to your IT
layer.
The XPress DR+ is delivered with IAP Standard Tunneling protocol and can be loaded with
industrial communication protocols. The suite of protocols includes Modbus Bridge, which
supports MODBUS/TCP, MODBUS/ASCII, and MODBUS/RTU
(Schneider Electric). Where the
IAP Standard Tunneling protocol is limited to standard ASCII device-to-device connections, the
industrial protocols offer connections to other devices that require special formatting or features
simultaneously.
For information about using any of the industrial communication protocols, find the protocol
firmware files and the specific protocol guides at the Lantronix website at