Westermo DDW-142-485 - Manual (Page 8)

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Description
Functional description
The Wolverine DDW-142-485 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 two Ethernet devices to be attached and an RS-422/485 port allows for a
legacy piece of equipment to be incorporated into the IP network.
The operating system in DDW-142-485 (WeOS) can deliver unique security functionality
for this class of product as well as allowing the DDW-142-485 to form part of a resilient
multimedia ring network using the Westermo FRNT protocol or industry standard STP/
RSTP. WeOS has been developed to provide industrial networking solutions and contains
amazing 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-142-485 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 professionals to quickly master. Once the system is configured an easy
solution is also available for the maintenance engineer – USB backup and restore means
that stored configurations can be automatically downloaded from a USB stick.
The DDW-142-485 is often used in applications on railways, roads or with utilities
where failure 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.