Westermo Lynx DSS L106-S2, L206-S2 Industrial Ethernet switch User Guide
Below you will find brief information for Industrial Ethernet switch Lynx DSS L106-S2, Industrial Ethernet switch Lynx DSS L206-S2. The Lynx DSS L106-S2 and the Lynx DSS L206-S2 are industrial Ethernet switches and device servers designed for harsh environments. They feature two serial ports, one supporting RS-232 and the other configurable for RS-232/422/485, enabling communication with legacy equipment. The units operate with Westermo's WeOS operating system, incorporating FRNT (Fast Recovery of Network Topology) technology for quick network reconfiguration in case of link or hardware failures.
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User Guide
6643-2240
WeOS
Lynx DSS
L106-S2/L206-S2
Industrial Ethernet
6-port Device Server Switch
www.westermo.com
License Information
This device contains public available software which is under the GPL license.
For more information see legal.pdf included with all firmware releases.
This product includes software developed by the OpenSSL Project for use in the
OpenSSL Toolkit. http://www.openssl.org
Legal information
The contents of this document are provided “as is”. Except as required by applicable law, no warranties of any kind, either express or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose, are made in relation to the accuracy and reliability or contents of this document. Westermo reserves the right to revise this document or withdraw it at any time without prior notice.
Under no circumstances shall Westermo be responsible for any loss of data or income or any special, incidental, and consequential or indirect damages howsoever caused.
More information about Westermo can be found at the following Internet address:
http://www.westermo.com
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Safety
!
Before installation:
Read this manual completely and gather all information on the unit. Make sure that you understand it fully. Check that your application does not exceed the safe operating specifications for this unit.
This unit should only be installed by qualified personnel.
This unit should be built-in to an apparatus cabinet, or similar, where access is restricted to service personnel only. The power supply wiring must be sufficiently fused, and if necessary it must be possible to disconnect manually from all power supply. Ensure compliance to national installation regulations. This unit uses convection cooling. Make sure that the unit is installed such as its ambient temperature is within its specified maximum/minimum temperature.
!
Before mounting, using or removing this unit:
Prevent access to hazardous voltage by disconnecting the unit from all power supply.
WARNING
Do not open connected unit. Hazardous voltage may occur within this unit when connected to power supply.
Before powering-up, a protective earthing conductor must be connected to the protective earthing terminal and have a cross-sectional area of at least 1.5 mm².
Note that this unit can be connected to two different power sources.
When this unit is operated at an ambient temperature above +55°C (+131°F), the
External Surface of Equipment may exceed Touch Temperature Limit according to
EN/IEC/UL 60950-1.
To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord.
Care recommendations
Follow the care recommendations below to maintain full operation of unit and to fulfill the warranty obligations.
This unit must not be operating with removed covers or lids.
Do not attempt to disassemble the unit. There are not any user serviceable parts inside.
Do not drop, knock or shake the unit. Rough handling above the specification may cause damage to internal circuit boards.
Do not use harsh chemicals, cleaning solvents or strong detergents to clean the unit.
Do not expose the unit to any kind of liquids (rain, beverages, paint etc), unless all connectors and the ventilation membrane are sufficiently protected.
Do not use or store the unit in dusty or dirty areas, unless all connectors and the ventilation membrane are sufficiently protected.
Do not cover or bring mechanical force to the ventilation membrane on the back of the unit.
If the unit is not working properly, contact the place of purchase, nearest Westermo distributor office or Westermo Tech support.
Maintenance
No maintenance is required, as long as the unit is used as intended within the specified conditions.
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Agency approvals and standards compliance
Type
EMC
Safety
Marine
Approval / Compliance
EN 61000-6-1, Immunity residential environments
EN 61000-6-2, Immunity industrial environments
EN 61000-6-3, Emission residential environments
EN 61000-6-4, Emission industrial environments
EN 55022 +A1, Emission IT equipment
EN 55024 +A1 + A2, Immunity IT equipment
FCC part 15 Class B
EN 50121-4, Railway signalling and telecommunications apparatus
IEC 62236-4, Railway signalling and telecommunications apparatus
UL/IEC/EN 60950-1, IT equipment
DNV Standard for Certification no. 2.4
FCC Part 15.105
Notice:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
… Reorient or relocate the receiving antenna
… Increase the separation between the equipment and receiver
… Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
… Consult the dealer or an experienced radio/TV technician for help.
Corrosive environment
Notice:
This product has been successfully tested in a corrosion test according to
IEC 60068-2-60, method 3. This means that the product meets the requirements to be placed in an environment classified as ISA-S71.04 class G3.
Note! If the product is placed in a corrosive environment, it is important that all un-used connector sockets are protected with a suitable plug in order to avoid corrosion attacks on the gold plated pins in connectors.
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Declaration of Conformity
Westermo Teleindustri AB
Declaration of conformity
The manufacturer Westermo Teleindustri AB
SE-640 40 Stora Sundby, Sweden
Herewith declares that the product(s)
Type of product Model
1
Industrial Ethernet 6-port Device Server Switch Lynx DSS L*06-S2* is in conformity with the following EC directive(s).
No Short name
2004/108/EC
2011/65/EU
References of standards applied for this EC declaration of conformity.
No
EN 61000-6-1
EN 61000-6-2
EN 61000-6-3
EN 61000-6-4
EN 55024
Title
Electromagnetic compatibility – Immunity for residential environments
Electromagnetic compatibility – Immunity for industrial environments
Electromagnetic compatibility – Emission for residential environments
Electromagnetic compatibility – Emission for industrial environments
Information technology equipment - Immunity
EN 55022
Electromagnetic Compatibility (EMC)
Restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS)
Information technology equipment - Emission
Issue
2007
2005
2007
+A1:2011
2007
+A1:2011
1998
+A1:2001
+A2:2003
2006
+A1:2007
2006 EN 50121-4 Railway applications - Electromagnetic compatibility
Emission and immunity of the signalling and telecommunications apparatus
The last two digits of the year in which the CE marking was affixed: 13
Pierre Öberg
Technical Manager
18 th
Mars 2013
1
The first “*” in the model name can be any alphanumeric character, indicating software version. The second “*” in the model name can be any alphanumeric characters indicating customer specific models, or blank.
Postadress/Postal address
S-640 40 Stora Sundby
Tel.
016-428000
Telefax
016-428001
Postgiro
52 72 79-4
Bankgiro
5671-5550
Org.nr/
Corp. identity number Registered office
556361-2604 Eskilstuna
Sweden Int+46 16428000 Int+46 16428001
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Type tests and environmental conditions
Environmental phenomena Basic standard Description
Electrostatic discharge EN 61000-4-2 Enclosure
Fast transients
Surge
EN 61000-4-4
EN 61000-4-5
Power port
Ethernet
Status out/Digital in
Serial ports
Enclosure
Power port
Power frequency magnetic field EN 61000-4-8
Pulsed magnetic field
Radiated RF immunity
Conducted RF immunity
EN 61000-4-9
EN 61000-4-3
EN 61000-4-6
Radiated RF emission
Conducted RF emission
Compass safe distance
EN 55022/
FCC Part 15/
DNV 2.4
EN 55022/
FCC Part 15/
DNV 2.4
DNV 2.4
Test levels
Contact: ±6 kV
Air: ±8 kV
±2 kV
Ethernet
Status out/Digital in
RS-232
RS-422/485
Enclosure
Enclosure
Enclosure
Power port
Ethernet
Status out/Digital in
Serial ports
Earth port
Enclosure
L-L: ±0.5 kV, 2 Ω, 18 μF
L-E: ±2 kV, 42 Ω, 0.5 μF
L-L: ±1 kV, 42 Ω, 0.5 μF
L-E: ±2 kV, 12 Ω, 9 μF
L-L: ±1 kV, 12 Ω, 9 μF
L-E: ±2 kV, 2Ω, 0.5 μF
L-E: ±2 kV, 42 Ω, 0.5 μF
L-L: ±1 kV, 42 Ω, 0.5 μF
L-E: ±2 kV, 2 Ω, 0.5 μF
L-E: ±2 kV, 42 Ω, 0.5 μF
300 A/m; 0, 16.7, 60 Hz
1000 A/m; 50 Hz
300 A/m
20 V/m @ (80 – 2700) MHz
1 kHz sine, 80% AM
10 V, 80% AM, 1 kHz; (0.15 – 80) MHz
Class B / DNV bridge
Dielectric strength EN 60950-1
Power port
Ethernet
Class B / DNV bridge
Class B
Enclosure
Power port to all other ports
Ethernet ports to all other ports
RS-232 port to all other ports
RS-422/485 port to all other ports
Standard compass (5.4°/H deviation) =
15 cm
Steering/standby steering/emergency compass (18°/H deviation) = 10 cm
1.5 kVrms, 50 Hz, 1 min
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Environmental
Temperatures
Humidity
Altitude
MTBF
Service life
Vibration
Shock
MIL-C217F2,
Parts count
IEC 60068-2-6
(sine)
IEC 60068-2-64
(random)
IEC 60068-2-27
Operating –40 to +70°C (–40 to +158°F)*
Storage and transport –50 to +85°C (–58 to +185°F)
Operating 5 to 95 % relative humidity
Storage and transport 5 to 95 % relative humidity
Operating 2 000 m / 70 kPa
Ground Benign, 25°C
(77°F)
593 000 hours
Operating
Operating
Operating
Operating
10 year
3 – 13.2 Hz: 1mm
13.2 – 100 Hz: 0.7 g
5.5 – 30 Hz: 1.5 g
30 – 50 Hz: 0.42 mm
50 – 500 Hz: 4.2 g**
5 – 20 Hz: 2 m²/s³,
20 – 2000 Hz: – 3 dB/oct
30 g, 11 ms
100 g, 6 ms**
10 g, 11 ms Bump
Packaging
Enclosure
Dimension W x H x D
With connectors
Weight
Degree of protection
Cooling
IEC 60068-2-27
EN 60950-1
EN 60529
Zinc
Enclosure
* Refer to “Safety” section in User Guide.
** Might require Ethernet cables to be fastened close to the unit.
Fire enclosure
52.5 x 100 x 101 mm
52.5 x 119 x 101 mm
0.7 kg
IP 40
Convection
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Description
L106-S2/L206-S2 is an Industrial switch and device server made for harsh environments.
WeOS is the operating system of L106-S2/L206-S2 enabling the unit to operate in two functional levels. The switch can be used in either 10 or 100 Mbit networks.
Lynx DSS L106-S2/L206-S2 has two serial ports, one that supports RS-232 and the other configurable for RS-232/422/485 as well as serial protocols for interconnection with legacy equipment.
Our unique FRNT (Fast Recovery of Network Topology) technology is the fastest protocol on the market to re-configure a network in the event of any link or hardware failure.
That is why our equipement are used in safety critical applications such as tunnels, traffic signal control and railway systems.
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Interface specifications
Power
Operating voltage
Rated current
Rated frequency
Inrush current, I
2 t
Startup current*
Polarity
Redundant power input
Isolation to
Connection
Rated: 24 to 48 VDC
Operating: 19 to 60 VDC
150 mA (300 mA) @ 24 VDC (with 500 mA USB load)
80 mA (150 mA) @ 48 VDC (with 500 mA USB load)
DC
22.7·10
-3
A
2 s @ 48 VDC
2 x Rated current
Reverse polarity protected
Yes
All other
Detachable screw terminal
Connector size
Shielded cable
0.2 – 2.5 mm
Not required
* External supply current capability for proper start-up
2 (AWG 24 – 12)
Ethernet TX
Electrical specification
Data rate
Duplex
Circuit type
Transmission range
Isolation to
Connection
Cabling
Conductive housing
Number of ports
* Refer to Safety section.
IEEE std 802.3. 2005 Edition
10 Mbit/s, 100 Mbit/s, manual or auto
Full or half, manual or auto
TNV-1
Up to 150 m with CAT5e cable or better*
All other
RJ-45, auto MDI/MDI-X
Shielded CAT5e or better is recommended
Yes
4
RS-232
Electrical specification
Data rate
Data format
Protocol
Circuit type
Transmission range
Isolation to
Connection
Shielded cable
Conductive housing
Number of ports
EIA RS-232
50 bit/s – 115.2 kbit/s
7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits
Transparent, optimised by packing algorithm
SELV
15 m / 49 ft
All other
RJ-45 according to EIA-561
Recommended
Yes
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RS-232/422/485
Electrical specification
Data rate
Data format
Circuit type
Transmission range
Isolation to
Connection
Shielded cable
Conductive housing
Number of ports
RS-232
Configurable for EIA RS-232 or EIA RS-422/485
50 bit/s – 115.2 kbit/s
RS-422/485 50 bit/s – 2 Mbit/s
7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits
(2 stop bits only when no parity is set)
TNV-1
RS-232 15 m / 49 ft
RS-422/485 Up to 1200 m / 0.74 mi, depending on data rate and cable type
RS-232
All other
RJ-45 according to EIA-561
RS-422/485 RJ-45
RS-232 Recommended
RS-422/485 Not required, but recommended in railway installations close to the rails.*
Yes
1
* To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m boundary or the cable is longer than 30 m and inside 10 m boundary to the rails and connected to this port.
I/O / Relay output
Maximum voltage/current
Contact resistance
Isolation to
Connection
Connector size
60 VDC / 80 mA
Max 30 Ω
All other
Detachable screw terminal
0.2 – 2.5 mm 2 (AWG 24 – 12)
I/O / Digital input
Maximum voltage/load current
Voltage levels
Isolation to
Connection
Connector size
60 VDC / 2 mA
Logic one: >12V
Logic zero: <1V
All other
Detachable screw terminal
0.2 – 2.5 mm 2 (AWG 24 – 12)
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USB
Electrical specification
Data rate
Circuit type
Maximum supply current
Connection
Console
Electrical specification
Data rate
Data format
Circuit type
Connection
USB 2.0 host interface
Up to 12 Mbit/s (full-speed mode)
SELV
500 mA
USB receptacle connector type A
LVTTL/LVCMOS-level
115.2 kbit/s
8 data bits, no parity, 1 stop bit, no flow control
SELV
2.5 mm jack, use only Westermo cable 1211-2027
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Location of interface ports and LED’s
LED Indicators (for details see page 16)
Power connection (for details see page 9)
USB
Position Direction Description
No. 1 Out VBUS
No. 2
No. 3
In/Out
In/Out
D–
D+
No. 4
Shield
Out
In/Out
GND
Connected to protective earth
I/O connection (for details see page 10)
Ethernet connection TX (4 ports)
Position Signal Direction Description
No.1
TD+ In/Out Transmitted/Received data
No. 2
No. 3
No. 4
TD–
RD+
–
In/Out
In/Out
Transmitted/Received data
Transmitted/Received data
Not Connected
No. 5
No. 6
No. 7
No. 8
Shield
–
RD–
–
–
In/Out
Not Connected
Transmitted/Received data
Not Connected
Not Connected
Connected to PE
RJ-45 connector (Front view)
Male
Pin 8 Pin 1
Female
Pin 8 Pin 1
Pin 1 Pin 8
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RS-422/485 (for more details see below)
Position
No. 1
No. 2
No. 3
No. 4
No. 5
No. 6
No. 7
No. 8
RS-422
(4-wire)
T+
Signal
RS-485
(2-wire)
T+/R+
Direction Description
Out/In
T–
R–
–
–
R+
–
–
T–/R–
–
–
–
–
–
–
Out/In
In
–
–
In
–
–
RS-422: Transmit
RS-485: Transmit/Receive
RS-422: Transmit
RS-485: Transmit/Receive
RS-422: Receive
Not used
Not used
RS-422: Receive
Not used
Not used
RS-232
Position Signal
No. 1
No. 2
No. 3
DSR
DCD
DTR
No. 4
No. 5
No. 6
No. 7
No. 8
SG
RD
TD
CTS
RTS
Direction Description
Out
Out
In
Data Set Ready
Data Carrier Detect
Data Terminal Ready
–
Out
In
Out
In
Signal Ground, not chassis ground
Receive Data
Transmit Data
Clear To Send
Request To Send
Lynx DSS is equipped with internal termination that is configurable through software in RS-422/485 mode. The following termination schemes are supported:
No termination Terminate Rx Terminate Tx Terminate Tx and Rx
Tx Tx Tx Tx
RS-422
Rx Rx Rx Rx
No termination
Termination
RS-485
When the unit is powered-off or during reboot, any internal termination will be disconnected from the signal lines.
Note: Due to that the port is configurable for both RS-232 and RS-422/485,
there are no fail-safe biasing available for RS-422/485 signals.
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I/O connection (for details see page 10)
Console port
(for details see page 10)
Cable 1211-2027
Bottom view
Connection to console port
The console port can be used to connect to the CLI
(Command Line Interface).
The following steps needs to be taken
1. Connect the serial diagnostic cable to the console port
(use only Westermo cable 1211-2027).
2. Connect cable to your computer (USB port, if drivers are needed they can be downloaded from our Web page).
3. Use a terminal emulator and connect with correct speed and format (115200, 8N1) to the assigned port.
For more information about the CLI, see the WeOS management guide.
Accessories
Description
Westermo console cable
RJ45 to terminal block
RJ45 to DB9 cable
Art no
1211-2027
1200-2490
1211-2210
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Power connection
4-position Product marking
No. 1 +DC1
Direction
Input
Description
Supply voltage input DC1
4
1
2
3
No. 2
No. 3
+DC2
-COM
Input
Input
Supply voltage input DC2
Common
No. 4 -COM Input Common
LynxDSS supports redundant power connection. The positive inputs are +DC1 and +DC2, the negative input for both supplies are –COM. Connect the primary voltage (e.g. +24 VDC) to the +DC1 pin and return to one of the
–COM pins on the power input.
I/O connection
3
4
1
2
4-position Product marking
No. 1 Status +
No. 2
No. 3
Status –
Digital in +
Direction
Output
Output
Input
Description
Alarm relay (status) contact
Alarm relay (status) contact
Digital in +
No. 4 Digital in – Input Digital in –
The Status output is a potential free, opto-isolated normally closed solid-state relay.
This can be configured to monitor various alarm events within the Lynx DSS unit, see WeOS Management Guide.
An external load in series with an external voltage source is required for proper functionality.
For voltage/current ratings, see Interface Specification section.
The Digital in is an opto-isolated digital input which can be used to monitor external events. For voltage/current ratings, see Interface
Specification section:
Lynx DSS
1
2
External
Load
V Status
3
4
+
V
Digital In
–
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15
LED indicators
LED
ON
Status
OFF
GREEN
RED
Description
Unit has no power.
All OK, no alarm condition.
Alarm condition, or until unit has started up.
(Alarm conditions are configurable, see ''WeOS
Management Guide'').
DC1
DC2
BLINK
OFF
GREEN
RED
OFF
GREEN
RED
OFF
Location indicator ("Here I am!"). Activated when connected to IPConfig Tool, or upon request from
Web or CLI.
Unit has no power.
Power OK on DC1.
Power failure on +DC1.
Unit has no power.
Power OK on DC2.
Power failure on +DC2.
FRNT disabled.
FRNT
RSTP
GREEN
RED
BLINK
OFF
GREEN
FRNT OK.
FRNT Error.
Unit configured as FRNT Focal Point.
RSTP disabled.
USR1
BLINK
OFF
GREEN
RED
Rx/TD, TD OFF
RSTP enabled.
Unit elected as RSTP/STP root switch.
Configurable, see WeOS Management Guide.
GREEN
FLASH
Tx/RD, RD OFF
1 to 4
GREEN
FLASH
OFF
No serial data received.
Serial data received.
No serial data transmitted.
Serial data transmitted.
GREEN
GREEN
FLASH
No Link.
Link established.
Data traffic indication.
YELLOW Port alarm and no link. Or if FRNT or RSTP mode, port is blocked.
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Mounting
This unit should be mounted on 35 mm DIN-rail, which is horizontally mounted inside an apparatus cabinet or similar. It is recommended that the DIN-rail is connected to ground.
Snap on mounting, see figure.
Mounting Lynx with integrated DIN-clip:
Removal
Removing Lynx with integrated DIN-clip:
Press down the support at the back of the unit using a screwdriver. See figure.
Cooling
This unit uses convection cooling.
To avoid obstructing the airflow around the unit, use the following spacing rules. Minimum spacing 25 mm
(1.0 inch) above / below and 10 mm
(0.4 inches) left / right the unit.
Spacing is recommended for the use of unit in full operating temperature range and service life.
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17
Getting Started
This product runs Westermo Operating System (WeOS) which provides several management tools that can be used for configuration of the unit.
• IPConfig tool
This is a custom Westermo tool used for discovery of attached Westermo units.
Note! Version of IP Config tool must be 10.4.0 or higher.
• Web
Configuration of the unit using the web browser.
• CLI
Configuration of the unit via the Command Line Interface.
Username: admin
Password: westermo
If the computer is located in the same subnet as the switch you can easily use a web browser to configure the unit. Within the web you can configure most of the available functions.
For advanced network settings and more diagnostic information, please use the CLI.
Detailed documentation is available in the chapter ”The Command Line Management
Tool ” in the WeOS management guide.
Factory default IP address: 192.168.2.200
Netmask: 255.255.255.0
Gateway: Disabled
Note! If you are not sure about the subnet – consult your network administrator.
Configuration
Configure the unit via Web browser
The unit can easily be configured via a Web browser.
Open the link http://192.168.2.200 in your web browser, and you will be prompted with a Login screen, where the default settings for Username and Password are:
Username: admin
Password: westermo
Once you have logged in, you can use the extensive integrated help function describing all configuration options. Two common task when configuring a new switch is to assign appropriate IP settings, and to change the password of the admin account.
The password can be up to 64 characters long, and should consist of printable ASCII characters (ASCII 33-126); 'Space' is not a valid password character.
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Referring documents
Type
Management Guide
Description
Westermo OS management guide
Document number
6101-3201
Factory default on L106-S2 and L206-S2
It is possible to set the unit to factory default settings by using two straight standard
Ethernet RJ-45 cables.
1. Power off the switch and disconnect all Ethernet cables (copper and fibre).
2. Connect one Ethernet cable between Ethernet ports 1 and 4, and the other between
Ethernet ports 2 and 3.
The ports need to be connected directly by an Ethernet cable, i.e., not via a hub or switch. Use a straight cable – not a cross-over cable – when connecting the ports.
3. Power on the unit.
4. Wait for the unit to start up. Control that the ON LED is flashing red.
The ON LED flashing indicates that the unit is now ready to be reset to factory default. You now have the choice to go ahead with the factory reset, or to skip factory reset and boot as normal.
• Go ahead with factory reset:
Acknowledge that you wish to conduct the factory reset by unplugging the
Ethernet cables. The ON LED will stop flashing.
This initiates the factory reset process*, and the unit will restart with factory default settings. When the switch has booted up, the ON LED will show a green light, and is now ready to use.
• Skip the factory reset:
To skip the factory reset process, just wait for approximately 30 seconds
(after the ON LED starts flashing RED) without unplugging the Ethernet cables.
The switch will conduct a normal boot with the existing settings.
* Note Do not power off the unit while the factory reset process is in progress.
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19
Westermo • SE-640 40 Stora Sundby, Sweden
Tel +46 16 42 80 00 Fax +46 16 42 80 01
E-mail: [email protected] www.westermo.com
Sales Units
Westermo Data Communications
China [email protected] www.cn.westermo.com
France [email protected] www.westermo.fr
Germany [email protected] www.westermo.de
North America [email protected] www.westermo.com
Singapore [email protected] www.westermo.com
Sweden
[email protected] www.westermo.se
United Kingdom [email protected] www.westermo.co.uk
Other Offices
For complete contact information, please visit our website at www.westermo.com/contact or scan the QR code with your mobile phone.
REV.C 6643-2240 2013-08 Westermo Teleindustri AB, Sweden – A Beijer Electronics Group Company
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Key Features
- Industrial Ethernet switch
- 2 serial ports
- RS-232/422/485 support
- WeOS operating system
- FRNT technology
- Supports redundant power
- Convection cooling
- DIN-rail mounting
- IP40 protection
- Compact design