Westermo DDW-142-EX - Manual (Page 14)

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Description
Functional description
The Wolverine DDW-142 allows effec tive Ethernet networks to be created over long
distances up to 15 km (9.3 mi) at data rates up to 15.3 Mbit/s on a single twisted pair
cable. By using two pairs “bonded” this rate can be doubled up to 30.4 Mbit/s. The integral
switch allows 2 Ethernet devices to be attached and an RS-232 port allows for a legacy
piece of equipment to be incorporated into the IP network.
The operating system in DDW-142 (WeOS) can deliver unique security functionality for
this class of product as well as allowing the DDW-142 to form part of a resilient multi-
media ring network using the Westermo FRNT protocol or industry standard STP/RSTP.
WeOS has been developed to provide industrial networking solutions and contains amaz-
ing serial connectivity capability – from being able to simulate an old AT modem, convert
Modbus RTU to TCP or encapsulate serial data into an IP packet.
The DDW-142 is incredibly flexible and easy to use. A basic point to point or multidrop
network can be created without the need for any kind of configuration. If however a more
complex solution requires some kind of network configuration the Web based setup is
simple to use. A CLI interface is also provided making the unit easy for networking pro-
fessionals to quickly master. Once the system is configured an easy solution is also avail-
able for the maintenance engineer – USB backup and restore means that stored configura-
tions can be automatically downloaded from a USB stick.
The DDW-142 is often used in applications on railways, roads or with utilities where fail-
ure could result in significant costs. All Westermo products are designed with high MTBF
in mind to improve operational reliability and also give long service life. Even features
like the SHDSL diagnostics and management allow indication of line degradation allowing
planned main tenance. As the unit is designed for these applications Westermo also ensure
that testing is carried out to ensure the unit can operate at extremes of temperature,
EMC and vibration and still provide robust communications.