Introduction - Siemens SIMATIC NET RUGGEDCOM RS920W Equipment Manual

Introduction

The RUGGEDCOM RS920W is a utility-grade serial device server that combines an
IEEE 802.11b/g Local Area Network (LAN) with wired serial ports. It allows network
designers to connect any RS232/422/485 serial device at up to 230 kbps for wireless
access and control via an IEEE 802.11i WLAN. The RUGGEDCOM RS920W eliminates
costly wiring and simplifies network installation.
The RUGGEDCOM RS920W can also act as a wireless access point and can – in
combination with an Ethernet over VDSL (EoVDSL) interface – aggregate many
devices at a remote location back to the central control room using existing
telephone grade cable (or other legacy serial cabling) at distances of up to 5 km (3
mi) at up to 35 Mbps (upstream and downstream).
The RUGGEDCOM RS920W functions as a wireless client/bridge within an IEEE
802.11b/g compliant WLAN. This allows the RUGGEDCOM RS920W to transfer data
for connected serial port and Ethernet devices via an installed Wireless Access Point.
The RUGGEDCOM RS920W is capable of wireless data rates of up to 54 Mbps whose
bandwidth is available for the combined device traffic volume emanating from two
serial ports and two Ethernet ports.
Static authentication support is provided by WPA-PSK. For authentication by an
access point and a RADIUS server, the RUGGEDCOM RS920W supports IEEE 802.1X/
RADIUS for wireless user traffic and distributing dynamic encryption keys. All wireless
communications are protected by modern network security features, including
strong encryption protocols using WPA with TKIP and even WPA2/802.11i with
128-bit AES encryption. Static authentication support is provided by WPA-PSK. For
additional centralized control, the RUGGEDCOM RS920W also supports IEEE 802.1X/
RADIUS for wireless user traffic and distributing dynamic encryption keys.
The RUGGEDCOM RS920W provides a high level of immunity to electromagnetic
interference and heavy electrical surges typical of environments found on plant
floors and curb-side traffic control cabinets. An operating temperature range of -40
to 85 °C (-40 to 185 °F), optional conformal coating, and a galvanized steel enclosure
allows the RUGGEDCOM RS920W to be placed in almost any location.
The RUGGEDCOM RS920W can be mounted on a DIN rail or panel for efficient use of
cabinet space.
The integrated power supply supports a wide range of voltages (88-300 VDC or
85-264 VAC) for worldwide operability.
The RUGGEDCOM RS920W's superior ruggedized design and embedded RUGGEDCOM
Rugged Operating System (ROS) provides superior system reliability and advanced
networking features making it ideally suited for creating Ethernet networks for
mission-critical, real-time, control applications.
RUGGEDCOM RS920W
Equipment Manual, 11/2023, C79000-G8976-1033-12
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