Ethernet Line Extender provides high-speed network connections over existing cabling

Easy-to-use, compact device for mission critical railway, industrial and utility applications

Westermo has enhanced its’ series of Ethernet line extenders with the release of a high-speed, compact device that is capable of meeting the increasing data transfer demands within industrial applications. The DDW-142-485 is the latest addition to the Wolverine range, which uses SHDSL technology to establish a high-speed connection between Ethernet networks using any existing copper cables. This can enable considerable cost savings to be made when installing new systems where in the past the only option would have been fibre.

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The DDW-142-485 is a fully managed device with Layer 2 switch functionality that enables effective Ethernet networks to be created over distances of up to 15 km. Data rates of up to 30.4 Mbits/s are possible, making the device suitable for connecting complex networks that may include a large number of devices requiring high bandwidth. An integral 2-port 100 Mbit switch allows two Ethernet devices to be attached and a RS-422/485 port enables legacy devices to be easily incorporated into the IP network.

To support engineers that are installing and maintaining ever increasingly complex networks, the DDW-142-485 has been designed to be extremely easy to set up, requiring no configuration for simple point-to-point communications. For larger networks, a web interface is provided and a CLI allows even more complex configuration. The Wolverine range is also supplied with a unique cable distance calculator. This uses data from real world applications to enable installers to calculate the speed and achievable distances using different types of cable. Once installed, SHDSL diagnostics and management functions enable indication of line degradation allowing planned maintenance. Should maintenance be required, a back-up and restore facility enables configurations to be quickly downloaded from a USB stick.

The DDW-142-485 is designed for use in tough environments and mission critical railway, road or utility applications where device failure could result in significant costs. The rugged and very compact unit can operate in extreme temperatures (-40 to +70°C) and where EMC and vibration levels are high. Total galvanic isolation and transient protection of the electronics contribute to a MTBF of 437,000 hours, ensuring high operational reliability and a long service life.

The Wolverine’s WeOS operating system provides an extensive suite of IP networking standards allowing resilient and flexible networks to be created. Developed to allow cross platform and future proof solutions, WeOS delivers a unique level of security and enables the DDW-142-485 to form part of a point-to-point, multi-drop or resilient ring network. In the event of any link or hardware failure, Westermo’s unique FRNT technology is able to re-configure a large network.

The DDW-142-485 is transparent for multicast addressing, allows VPN (Virtual Private Network) pass-through for IPSec (Internet Protocol Security) and can be used with protocols like Modbus/TCP and PROFINET I/O. The DDW-142-485 also features a Link Fault Forward (LFF) functionality whereby the Ethernet link status is sent over the SHDSL link between two units.

DDW-142-485 productpage

Heartbleed - Security vulnerability fixed in rapid time

A security vulnerability within systems using OpenSSL encryption has been widely reported around the globe over recent days. This vulnerability, CVE-2014 – 0160, has been named Heartbleed and could allow data, including passwords and encryption keys, to be read from effected systems.

Westermo has used OpenSSL code within the WeOS operating system since version 4.12.0 released on 14 June 2013. Although the issue is most significant for server equipment connected directly to the internet we believe that this security flaw is significant and have decided to issue a firmware update immediately for use by users that may be concerned about this risk.

Westermo see network security as a top priority within critical infrastructure solutions and believe we are the first industrial switch manufacturer to issue a fix for this problem. The new version of the WeOS firmware is ready to be downloaded directly from the Westermo Website. For any help in upgrading your equipment or for advice on the possible security risks then please contact our technical support team.

Please visit the Firmware section to download

Profibus to Fibre Optic Converter for Marine Applications

Westermo is proud to announce that its ODW-710 products, that allows a profibus DP network to be converted to a fibre optic solution, now has the DNV Marine approval. This means that networks running at the highest data rates can be stretched beyond the 200m maximum range of a copper network. 

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The units support the standard Profibus DP 9 pin D-sub connector and can auto detect data rates up to 12Mbit/sec. Built into a compact DIN rail mount housing the unit is incredibly easy to install and configure. Power can be provided by a DC source of between 10 and 60V and the units can operate between temperatures of -40 to +70 C.

There are two models, the F1 which allows a simple point to point connection and the F2 which allows for the creation of a resilient ring solution. The ODW-710 models both can be configured with SFP (short form pluggable) transceivers meaning a range of solutions can be offered depending on the type of fibre optic cable. A BiDi (Bi-Directional) transceiver can for instance be utilized when only a single fibre core is available.

The ODW is simple to install being small and with a simple integral DIN rail clip. The standard Profibus DP connector plugs straight onto the 9 pin D-sub and the unit automatically detects the data rate so no configuration is needed. The comprehensive LEDs provide a quick and easy way of detecting any network problems that may be encountered.

These products are a great addition to Westermo's comprehensive range of managed and unmanaged Ethernet switches and serial device servers, Ethernet extenders and media converters for maritime use. All products in this segment have been fully tested and certified by DNV (Det Norske Veritas) allowing them to be used within many offshore and shipboard systems like propulsion, dynamic positioning, bridge control, alarm management and observation systems.

ODW-710 DNV certificate

Read more about the ODW series

See the complete range of products certified for the Marine sector


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