Westermo EDW-100 EX User Manual

©

Westermo Teleindustri AB

www.westermo.com

Serial Adapter

User Guide

6616-2203

EDW-100

2

6616-2203

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

Software tools

Related software tools are available in the folder software tools under
technical support on the Westermo website.

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Safety

Before using this unit:

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.

Hazardous voltage may occur within this unit when connected to power supply or
TNV circuits.

Prevent access to hazardous voltage by disconnecting the unit from power supply
and all other electrical connections.

Prevent damage to internal electronics from electrostatic discharges (ESD) by
discharging your body to a grounding point (e.g. use of wrist strap).

Before installation:

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 the power supply. Ensure compliance to
national installation regulations.

Branch circuit protection (fuse) is required for this unit with rating not exceeding
20 A.

This unit uses convection cooling. To avoid obstructing the airflow around the
unit, follow the spacing recommendations (see Installation section).

Care recommendations

Follow the care recommendations below to maintain full operation of unit and to fulfil
the warranty obligations.

This unit must not be operating with removed covers or lids.
Do not attempt to disassemble the unit. There are no 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 paint the unit. Paint can clog the unit and prevent proper operation.
Do not expose the unit to any kind of liquids (rain, beverages, etc). The unit is not

waterproof. Keep the unit within the specified humidity levels.
Do not use or store the unit in dusty, dirty areas, connectors as well as other mechanical

part may be damaged.
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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General

This unit is intended for use in Zone 2 hazardous location only.

Marking

Baseefa 14ATEX0294X
II 3 G

Ex nA IIC T4 Gc
IECEx BAS 14.0137X
SPECIAL CONDITION

WARNING – DO NOT SEPARATE WHEN ENERGIZED

ATEX and IECEx Information (Applicable for EDW-100 Ex only)

Indicate that this unit complies with relevant European standards that are
harmonised with the 2014/34/EU Directive (ATEX).

II

Equipment group II.
This unit can be installed in all places with an explosive gas atmosphere other
than mines susceptible to firedamp

3

Equipment category 3.
A category is the classification according to the required level of protection.
This unit ensures the requisite level of protection during normal operation and
is intended for use in areas in which explosive atmosphere caused by gases,
vapours, mists, or dust mixtures are unlikely to occure or, if they do occure, are
likely to do so only infrequently and for a short periode only.

G

Indicates protection concerning explosive atmospheres caused by gases, vapours
or mists (G).

Ex Indicates that this unit is in conformity with relevant European Ex standard(s).

nA

Type of protection used.
This unit is a non-sparking device "nA" which is constructed to minimize the
risk of occurence of arcs or sparks capable of creating an ignition hazard during
conditions of normal operation.

IIC Gas group, a typical gas i hydrogen.

T4

Temperature class T4 (T4 = 135°C).
This unit is classified in accordance with its maximum surface temperature
(external and internal).

Gc

Equipment protection level Gc (EPL Gc).
Equipment for explosive gas atmospheres, having a "enhanced" level of
protection, which is not a source of ignition in normal operation and which may
have some additional protection to ensure that it remains inactive as an ignition
source in the case of regular expected occurences. EPL Gc are analogous to the
ATEX Categories (Category 3 G = EPL Gc).

SPECIAL

CONDITION

This unit has a special condition of use.
The special conditon for safe use contains safety related information that is
necessary for the correct installation and safe use.

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Ratings

Power 12 – 48 VDC; 250 mA

Ambient temperature –25ºC ≤ Ta ≤ +70ºC

Ingress protection (IP) IP21

Maximum surface temperatur 135ºC (temperature class T4)

Safety Control Drawing

Position Descripton Input / Output values

1 In/Out / TD+

U = ± 1 V (4μV/s)
I = ± 20 mA
Data rate:
10/100 Mbit/s

2 In/Out / TD–
3 In/Out / RD+
4 Not connected
5 Not connected
6 In/Out / RD–
7 Not connected
8 Not connected

Galvanically isolated via signal transformer and capacitively
isolated to signal ground through a 3 kV 470 pF capacitor.
See user manual for proven transient protection.

Position Descripton Input values

1 In / Common

U

min/max

= 10 – 60 VDC

I

max

= 300 mA

P

max

= 3 W

2 In / +Voltage A

3 In / +Voltage B

4 In / Common

See section Type tests and environmental conditions in this user
manual for proven transient protection.

1234

1234

Degree of protection IP 21
Ambient temperature –25°C to +70°C

Installation spacing

Minimum 25 mm above / below
Minimum 10 mm left / right

Position Descripton Input /Output values

1 Not connected (DCD)

U

max

= ± 12 Vpk

I

max

= ± 60 mA

Data rate:

0.3 – 115.2 kbit/s

2 In / Received Data (RD)
3 Out / Transmitted Data (TD)
4 Out / Data Terminal Ready (DTR)
5 – / Signal Ground (SG)
6 In / Data Set Ready (DSR)
7 Out / Request To Send (RTS)
8 In / Clear To Send (CTS)
9 Not connected

Position Descripton Input / Output values

1 In / R+ line RS-422 U

max

= ± 5 Vpk

I

max

= ± 250 mA

Data rate:

0.3 – 115.2 kbit/s

2 In / R– line RS-422
3 In/out / T+ line RS-422/485

4 In/out / T– line RS-422/485

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SPECIAL CONDITION FOR SAFE USE

Ambient temperature:

This unit is designed for use in extreme ambient temperature conditions as follows:
–25ºC ≤ Ta ≤ +70ºC

Installation in an apparatus cabinet:

The equipment must be installed in an area of not more than pollution degree 2 in accordance with
IEC 60664-1, and in an enclosure that provides a minimum degree of pretection of at least IP54 and
complies with the relevant requirements of EN 60079-0 and EN 60079-15.

Secureness of energisation:

External connections to the equipment must not be inserted or removed unless either the area in
which the equipment is installed is known to be non-hazardous, or the circuits connected have been
de-energised.

Resistance to impact:

This unit requires installation in an apparatus cabinet where adequate resistance to impact is
provided by the apparatus cabinet. See "Installation in an apparatus cabinet" above for requirements
on the external apparatus cabinet.

Resistance to light:

This unit requires installation in an apparatus cabinet where it is protected from light (for example
daylight or light from luminaires). See "Installation in an apparatus cabinet" above for requirements
on the external apparatus cabinet.

Secureness of plugs:

When this unit is installed in explosive atmospheres, all connectors must be mechanically secured to
prevent loosening by the use of cable ties or similar.

Conductor temperature:

When this unit is installed in locations with high ambient temperature, special precautions shall be
taken upon the choice of external conductors and the temperature rating of the conductor(s).

Directive 2014/34/EU alongside with other directives:

Directive 2014/35/EU (EMC) applies and to assure a safe performance of this unit under the scope
of Directive 2014/34/EU, refer to the electromagnetic immunity level specified under "Type tests and
environmental conditions" in this manual.

Standards and date of compliance

ATEX: EN 60079-0: 2012
EN 60079-15: 2010
IECEx: IEC 60079-0: 2011 EDITION 6
IEC 60079-15: 2010 EDITION 4

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Agency approvals and standards compliance

Type Approval / Compliance

EMC

EN 55022, Emission IT equipment

EN 55024, Immunity IT equipment

EN 61000-6-1, Immunity for residential, commercial and light-industrial environments

EN 61000-6-2, Immunity industrial environments

EN 61000-6-4, Emission industrial environments

EN 50121-4, Railway signalling and telecommunications apparatus

IEC 62236-4, Railway signalling and telecommunications apparatus

Safety

UL/CSA/IEC/EN 60950-1, IT equipment*
EN 60950-1, IT equipment**

ATEX** EN 60079-0 and EN 60079-15

IECEx** IEC 60079-0 and IEC 60079-15

* Applicable for EDW-100 only
** Applicable for EDW-100 Ex only

FCC Part 15.105
Notice:

This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.

EN 55022 Notice: Warning

This is a class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate
measures.

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Westermo Teleindustri AB

Declaration of Conformity

Org.nr/

Postadress/Postal address Tel. Telefax Postgiro Bankgiro Corp. identi ty number Registered office

S-640 40 Stora Sundby 016-428000 016-428001 52 72 79-4 5671-5550 556361-2604 Eskilstuna

Sweden Int+46 16428000 Int+46 16428001

The manufacturer Westermo Teleindustri AB

SE-640 40 Stora Sundby, Sweden

Herewith declares that the product(s)

Type of product Model Art no
Ethernet to serial adapter EDW-100 3616-0020

EDW-100 EX 3616-5020
EDW-120 3616-0010
EDW-120 EX 3616-5010

is in conformity with the following EU directive(s).

No Short name
2014/30/EU Electromagnetic Compatibility (EMC)

2014/35/EU Low Voltage Directive (LVD)
2014/34/EU

1

Equipment Explosive Atmospheres (ATEX)

2011/65/EU Restriction of the use of certain hazardous substances in electrical and electronic

equipment (RoHS)

References of standards applied for this EU declaration of conformity.

No Title Issue
EN 61000-6-1

Electromagnetic compatibility – Immunity for residential environments

2007

EN 61000-6-2

Electromagnetic compatibility – Immunity for industrial environments

2005

EN 61000-6-4 Electromagnetic compatibility – Emission for industrial environments 2007

+A1:2011

EN 50121-4 Railway applications - Electromagnetic compatibility

Emission and immunity of the signalling and telecommunications apparatus

2006

EN 60950-1 Information technology equipment -- Safety -- General requirements 2006
EN 50581 Technical documentation for the assessment of electrical and electronic

products with respect to the restriction of hazardous substances

2012

EN 60079-0

1

Explosive atmospheres Equipment – General requirements

2012

EN 60079-15

1

Electrical apparatus for explosive gas atmospheres –
Construction, test and marking of type of protection “n” electrical apparatus

2010

Pierre Öberg
Technical Manager
24

th

October 2017

1

Only applicable for EDW-100 EX and EDW-120 EX.

Declaration of Conformity, EDW-100 / EDW-100 EX

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Type tests and environmental conditions

Electromagnetic Compatibility

Phenomena Test Description Test levels

ESD EN 61000-4-2 Enclosure contact ± 6 kV

Enclosure air ± 8 kV

RF field AM
modulated

IEC 61000-4-3

Enclosure 20V/m 80% AM (1 kHz), 80 – 2 000 MHz

12V/m 80% AM (1 kHz), 2 000 – 2 700 MHz
RF field 900 MHz ENV 50204 Enclosure 20 V/m pulse modulated 200 Hz, 900 ± 5 MHz
Fast transient EN 61000-4-4

Signal ports

± 2 kV

Power ports ± 2 kV

Surge

EN 61000-4-5 Signal ports

unbalanced

± 2 kV line to earth, ± 2 kV line to line

Signal ports balanced ± 2 kV line to earth, ± 1 kV line to line
Power ports ± 2 kV line to earth, ± 2 kV line to line

RF conducted EN 61000-4-6 Signal ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz

Power ports 10 V 80% AM (1 kHz), 0.15 – 80 MHz
Pulse magnetic field EN 61000-4-9 Enclosure 1000 A/m, 6.4 / 16 ms pulse
Voltage dips and

interruption

EN 61000-4-29 DC power ports 10 & 100 ms, interruption

10 ms, 30% reduction
10 ms, 60% reduction
+20% above & –20% below rated voltage

Radiated emission CISPR 16-2-3 Enclosure EN 61000-6-4

ANSI C63.4 FCC part 15
Conducted emission CISPR 16-2-1 DC power ports EN 61000-6-4
Dielectric strength EN 60950 Signal port to other

isolated ports

1.5 kVrms 50 Hz 1 min

Power port to other
isolated ports

2 kVrms 50 Hz 1 min

Environmental

Temperature EN 60068-2-1

EN 60068-2-2

Operating –25 to +70ºC
Storage & Transport –40 to +70ºC
Maximum surface

temperature

135ºC (temperature class T4)

Humidity EN 60068-2-30 Operating 5 to 95% relative humidity

Storage & Transport 5 to 95% relative humidity
Altitude Operating 2 000 m / 70 kPa
Service life Operating 10 year
Vibration IEC 60068-2-6 Operating 7.5 mm, 5 – 8 Hz

2 g, 8 – 500 Hz

Shock IEC 60068-2-27 Operating 15 g, 11 ms

Packaging

Enclosure
EDW-100 UL 94 PC / ABS Flammability class V-1
EDW-100 Ex – Cabelec CA6141 –
Dimension

W x H x D

35 x 121 x 121 mm

Weight 0.2 kg
Degree of protection IEC 529 Enclosure IP21
Cooling Convection
Mounting On 35 mm DIN-rail

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Introduction

The EDW-100 is an Industrial Ethernet to serial adapter or Ethernet Terminal Server. The
serial interface is selectable between RS-232 and RS-422/485. The Ethernet interface is
10/100BASE-T and supports the following networking protocols: TCP, UDP, ICMP, IGMP,
HTTP, ARP.

Two EDW-100 can be used to provide a serial point to point link over an Ethernet
network using either UDP or TCP. When using TCP the EDW-100 can be configured as
client or server.

In addition to a transparent serial point-to-point link and ethernet to serial adapter, the
EDW-100 MG can also be configured to act as a Modbus gateway.

Each unit passes data
from its serial interface
to the serial interface
of the other unit. This
enables long distance serial
communication using pre­existing networks.

When EDW-100 is used
with the UDP protocol
it is also possible to
communicate one to many
(e.g. master to multiple
slaves), by using a broadcast
address or multicast
addressing

Network

Serial

Device

Configured
as UDP- or

TCP-server

Configured
as UDP- or

TCP-client

Serial

Device

Serial

Master

Serial

Slave

Serial

Slave

Serial

Slave

Network

Broadcast

Multicast

EDW-100 can also provide a remote serial interface
for a computer connected through a TCP/IP network
using a comport redirection software.

A COM port redirector or customer written
software can be used to create virtual COM ports.
This software will redirect data, originally sent to a
local COM port, to the remote serial interface of the
EDW-100. No changes are required on the computer
application software.

Application software

Data to / from COM3

Data to / from COM4

Data to / from COM5

Data to / from COM255

COM port

redirector software

Network

COM3

COM4

COM5

COM255

Network Interface

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For more information on applications and technical data visit www.westermo.com. The
Web tool also includes an integrated help where all functions and modes are described
in details.

More help can be found inside the web tool and the "?" button on each configuration
page.

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Product description

The EDW-100 is an industrial Ethernet to serial interface adapter designed for harsh
environments.

It allows serial devices to interface through a new or existing Ethernet network. The unit
can support either RS-232, RS-485 or RS-422 based protocols running at up to 115.2
kbit/s. Ethernet connection is via a standard RJ-45 port with MDI/MDI-X.

The protocols used for network communication is UDP or TCP. This allows the EDW­100 to be setup as a TCP-server or -client as well as an UDP unit.

Configuration of the unit

The EDW-100 can be easly configured via the onboard Web based configuration tool,
alternatively some functions can also be set by hardware DIP-switches on the PCB.

The network interface properties such as speed, duplex and auto-negotiation can be
configured by the Web based configuration tool and some settings can be made by
hardware DIP-switches.

It is also possible to monitor and override the hardware settings by using the Web tool, if
that is done this is indicated by the RC LED (Remotely Controlled).

The serial port properties such as data rate, flow control and data bits etc. are
configured by the Web based configuration tool.

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Termination and fail-safe of the RS-422/485 serial
interface can only be made by DIP-switches only.

The local IP address of the unit can be configured by
using a terminal program.

New Connection - Hyper Terminal

File

'EDW-100 IP CONFIGURATION'

Firmware : 4100-9002

-- Current IP configuration --

Local IP address : 169.254.100.100
Gateway address : 169.254.100.1
Subnet Mask address : 255.255.255.0

Press <Return> to select the value shown in braces,
or enter a new value.

Local IP address [169.254.100.100]?

Edit View Call Transfer

Connected 0:01:33 VT100 9600 8-N-1 NUM

SCROLL CAPS

Capture Print echo

Help

Unique features

… Packing algorithm that enables the user to decide how and when the serial data

should be encapsulated in a TCP or UDP data frame and sent out on the network.

… Galvanic isolation, this feature eliminate communication errors. One of the most

common errors is caused by potential differences between interconnected equipment.
… Redundant power supply with wide input range.
These features along with the high EMC immunity enable the device to be used in

projects where a high degree of reliability is required.

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The Telnet diagnostic service provide the user with information such as UDP- or TCP
mode, connected or listening state (TCP) etc.

C:\WINDOWS\System32\telnet.exe

Westermo EDW-100

login: edw100

Password: ******

Hello edw100

Welcome to Westermo EDW-100 diagnostics service

(TCP Server): Listening for TCP connection on port: [9000]...

Diagnostic information

The first level of diagnostic information is the status indicated by the LEDs.

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Getting started

IP Address

The default IP address of the EDW-100 when delivered is 169.254.100.100.
Default port 9000
Default gateway 169.254.100.1

IP address configuration

The IP address is configurable by the Web tool and/or by using a terminal program.
Below is an description of how to configure the IP address by using a terminal program.

1. If the address is known, connect the unit from a Web browser with the address to

EDW-100. If the address is unknown, connect the serial RS-232 interface to a terminal
program with settings:

Data rate: 9600 bit/s

Data bits: 8
Stop bits: 1
Parity: None
Flow control: None

EDW-100

DTE

3

2

7

8

6

5

1

4

9

3

2

7

8

6

5

1

4

9

Computer

DTE

Note! When connecting EDW-100 to a Comport in a

computer you have to use a “Cross-over” cable,
because both EDW-100 and the computer
interface is DTE. 1.8 m standard cable is supported by Westermo art.no.
1211-2172.

2. Setting DIP S1:1 to ‘On’ and power-up the EDW-100 will enable the local IP address

to be configured via serial interface.
Once connected with the terminal program you can change the IP address, Gateway
address and Subnet Mask according to the picture below:

3. Set DIP S1:1 to ‘Off’ and power cycle the EDW-100.

4. The unit is now ready for a complete configuration by the Web tool.

Address EDW-100 in a browser with the configured IP address.
Note that the used computer have to be on the same

New Connection - Hyper Terminal

File

'EDW-100 IP CONFIGURATION'

Firmware : 4100-9002

-- Current IP configuration --

Local IP address : 169.254.100.100
Gateway address : 169.254.100.1
Subnet Mask address : 255.255.255.0

Press <Return> to select the value shown in braces,
or enter a new value.

Local IP address [169.254.100.100]?

Edit View Call Transfer

Connected 0:01:33 VT100 9600 8-N-1 NUM

SCROLL CAPS

Capture Print echo

Help

See also configuration by
Web Tool

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Username and Password for configuration

The EDW-100 is username and password protected. These are used when connecting
with Web browser during configuration and with Telnet for diagnostics.

Default username: edw100
Default password: edw100

Browser Login

The Webtool has two different login accounts.
The first is the EDW-100 Guest account that only allows the user to read the units
settings but he has no rights to configure the unit in any way. This accounts Username
and Password are fixed and aren’t configurable.

EDW-100 Guest

Username: guest
Password: guest
or
Username: anonymous
Password: anonymous

EDW-100 Config

The second account is the EDW-100 Config that gives the user rights to configure the
unit with new parameter values. This accounts Username and Password can also be
configured when the user are logged in as EDW-100 Config. Default Username and
Password are listed below.

Default Username: edw100
Default Password: edw100

Restore Factory default settings

Note! This will clear your customized settings.

The factory default settings can be restored using DIP-switch S1:2.

1. Force this to ‘On’ and Power-up the EDW-100 for at least 5 seconds.

2. Force the DIP-switch to ‘Off’ and power cycle the EDW-100.

The EDW-100 now contains the factory default settings.

Note ! If the default address of the unit is valid on the connected network it is possible

to access the unit directly from a browser.

ON

1 2 3 4 5 6 7 8

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Configuration by Web Tool

The EDW-100 includes an easy-to-use Web
configuration tool. The Web tool is very intuitive
and includes useful help information for the
configurable parameters.

Connect and login to the EDW-100 with the
EDW-100 Config account on the default IP
address and with default username- and password
combination (or your customized if configured)
using a standard Web browser.

Use the Configuration Wizard to set all
parameters then press the button "Program Unit"
to write the parameters into the unit or save the
parameters to a file.

Serial/IP® and Telnet Options

EDW-100 are bundled with Serial/IP® virtual Com port director software. The Serial/
IP® use portions of the “Telnet Environment Option” (RFC1572) to verify that it is
connected to an EDW-100.

The EDW-100 has partial support for the “Telnet Com Port Control Option” (RFC2217).
This makes it possible to remotely (on the fly) change serial port parameters. Currently
supported parameters are baud rate, parity, number of data bits and number of stop bits.

As default the Telnet Options are disabled. If the Serial/IP® software is to be used, the
Telnet options must be enabled in the web tool. This parameter can be found on the
Serial/IP page.

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Diagnostics via Telnet

The EDW-100 provides the user with diagnostics information via a Telnet connection on
port 23.

Information presented to the user is:
… Operational mode (UDP, TCP-server or client)
… Operational status (Listening for connection (TCP server), connected to host (TCP

server or client), Attempting to connect (TCP client))

… The ‘Status’ LED on the EDW-100 will lit during Telnet session.

Below is an description of how to start a Windows Telnet session and get diagnostics
information from the EDW-100.

C:\WINDOWS\System32\telnet.exe

Welcome to Microsoft Telnet Client

Escape Character is 'CTRL+]'

Microsoft Telnet> o 169.254.100.100

1. Start a Telnet session.

2. Connect to EDW-100 by typing ‘o 169.254.100.100’

or the configured IP address of the EDW-100.

3. Login using default username and password

(or your customized settings if configured).

Application modes

The EDW-100 can be setup for use in one of four different application modes:
… TCP Server … TCP Client … UDP … Modbus gateway

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Short description of TCP and UDP

User Datagram Protocol (UDP)

UDP provides a connectionless datagram service. This means that the arrival of
datagram’s or data packets is not controlled and the reliability of the communication
is the responsibility of the application layer protocol. In this way UDP is a simpler
method of communication than TCP. As data is sent and received without any established
connection the data transfer is more efficient and often faster. UDP is therefore used
in applications that require efficient use of the bandwidth and also have a higher level
protocol to handle lost data.

Transmission Control Protocol (TCP)

TCP is a connection-oriented delivery service. Connection oriented means that a
connection must be established before hosts can exchange data. An acknowledgement
is used to verify that the data was received by the other host. For data segments sent,
the receiving host must return an acknowledgement (ACK). If an ACK is not received,
the data is retransmitted. Flow-control between the hosts is managed by TCP. For
larger amounts of data that have to be split between packets TCP provides a method
for reliably reassembling the data in the correct order. Because of the requirement to
establish a connection and acknowledge transmissions, TCP takes longer time to transmit
data than UDP and uses more bandwidth.

When delivered the EDW-100 is in TCP server mode.

TCP Server mode

This mode makes it possible to accept incoming TCP connections attempts to the
EDW-100 from an TCP client e.g. a EDW-100 in TCP client mode. Other examples of
TCP clients: Telnet client establishing a raw TCP connection, COM-port redirector
software running on a Windows PC.

TCP Client mode

This mode makes it possible to establish a TCP connection to a remote TCP server e.g. a
EDW-100 in TCP Server mode.

DSR signal rising or a powering up the unit will trigger the EDW-100 to make an
connection attempt to the specified server depending on configuration.

UDP mode

UDP is a connection less protocol sending datagram’s i.e. there are less overhead traffic
compared to TCP and no acknowledgement packets will be sent between the peer’s
during communication.
Using UDP will enable the EDW-100 to send and listen to broadcast- and multicast
messages.

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Short description of Modbus

Modbus is a communication protocol developed by Modicon systems. The EDW-100
Modbus gateway is used for interconnecting a TCP/IP Modbus network and a serial line
Modbus network (either RTU or ASCII). It permits Modbus clients (masters) on either of
the TCP/IP or the serial network to connect to Servers (slaves) on the other network.
In a standard Modbus network, there is one master and up to 247 Slaves, each with a
unique slave address from 1 to 247. The master can also write information to the slaves.
The official Modbus specification can be found at www.modbus.org.

Gateway Server mode

Allows up to 16 Modbus clients (masters) on a TCP/IP network to connect to servers
(slaves) on the serial network.

Ethernet

Modbus TCP Client

Modbus TCP Client

Modbus TCP

RS-485

Modbus RTU or

Modbus ASCII

Modbus Slave 2

Modbus Slave 1

Modbus Slave 3

Modbus Slave 4

Up to 16 TCP

Clients (Master)

EDW-100

Modbus Gateway

Up to 247 servers

(Slaves)

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Gateway Client mode

Allows one Modbus client (master) on a serial network to connect to one or more
servers (slaves) on the TCP/IP network.

Setting up the EDW-100 as a Modbus Gateway

Set the EDW-100 application mode to Modbus gateway to enable the gateway
functionality. Serial settings and ip-configuration is shared whit the other application
mode but the rest of the Modbus configuration is done on the specific Modbus
configuration page.
To set up the gateway it is necessary to know details about the TCP and the serial
Modbus network. Please refer to the web tool help page for more configuration details.

Ethernet

Modbus

Slave 5

Modbus TCP

RS-485

Modbus RTU or

Modbus ASCII

Modbus Slave 2

Modbus Client

Modbus Slave 3

Modbus Slave 4

Max total 247 Servers

EDW-100

Modbus gateway

1 Client (Master)

and up to

247 servers

(Slaves)

Modbus

Slave 6

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Advanced settings

Advanced settings configure the unit for special application requirements or special
interface functions, these settings are default disabled.

Detailed description can be received from the Web configuration tool.

Network

Received data

Conditions

Packing

Transmitted data

Packing algorithm

When data arrives at the serial port of the EDW-100 there must be one or more criteria
fulfilled to trigger the EDW-100 to encapsulate the received serial data into a frame and
send it out on the network.

These criteria are setup using different parameters i.e. the ‘packing algorithm’. The default
settings are selected to be compatible to most applications but can be optimized to
the customer specific application. Detailed description can be received from the Web
configuration tool.

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6616-2203

Interface specifications

* To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m

boundary to the rails and connected to this port.

The cable shield should be properly connected (360°) to an earthing point within 1 m from this port. This earthing
point should have a low impedance connection to the conductive enclosure of the apparatus cabinet, or similar,
where the unit is built-in. This conductive enclosure should be connected to the earthing system of an installation
and may be directly connected to the protective earth.

Power LV

Rated voltage 12 to 48 VDC

Operating voltage 10 to 60 VDC

Rated current 250 mA @ 12 VDC

125 mA @ 24 VDC

63 mA @ 48 VDC

Rated frequency DC

Maximum inrush
current @ 10 ms

0.3 A²s @ 48 VDC

Polarity Reverse polarity protected

Redundant power input Ye s

Isolation to All other 2 kVrms

Connection Detachable screw terminal

Connector size 0.2 – 2.5 mm² (AWG 24 – 12)

RS-422/485

Electrical specification EIA RS-485

2-wire or 4-wire twisted pair

Data rate 300 bit/s – 115.2 kbit/s

Data format 7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits

Protocol Transparent, optimised by packing algorithm

Retiming Not applicable

Turn around time < 3 bits

Circuit type TNV-1

Transmission range ≤ 1200 m, depending on data rate and cable type (EIA RS-485)

Settings 120 Ω termination and fail-safe biasing 680 Ω

Protection Installation Fault Tolerant (up to ±60 V)

Isolation to Power 2 kV

Ethernet 1; 1.5 k Vrms

Connection Detachable screw terminal

Connector size 0.2 – 2.5 mm² (AWG 24 – 12)

Shielded cable Not required, except when installed in Railway applications as

signalling and telecommunications apparatus and located close to
rails*

Conductive housing No

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6616-2203

* To minimise the risk of interference, a shielded cable is recommended when the cable is located inside 3 m

boundary to the rails and connected to this port.

The cable shield should be properly connected (360°) to an earthing point within 1 m from this port. This earthing
point should have a low impedance connection to the conductive enclosure of the apparatus cabinet, or similar,
where the unit is built-in. This conductive enclosure should be connected to the earthing system of an installation
and may be directly connected to the protective earth.

RS-232

Electrical specification EIA RS-232

Data rate 300 bit/s – 115.2 kbit/s

Data format 7 or 8 data bits, Odd, even or none parity, 1 or 2 stop bits.

Protocol Transparent, optimised by packing algorithm

Retiming Not applicable

Circuit type SELV

Transmission range 15 m

Isolation to Power 2 kV

Ethernet 1; 1.5 kVrms

Connection 9-pin D-sub male (DTE)

Shielded cable Not required, except when installed in Railway applications as

signalling and telecommunications apparatus and located close to
rails*

Conductive housing Isolated to all other circuits

Number of ports 1

Ethernet

Electrical specification IEEE std 802.3. 2000 Edition

Data rate 10 Mbit/s or 100 Mbit/s, auto-negotiated or manually set by

DIP-switches

Protocol UDP, TCP, ICMP, HTTP and ARP

Duplex Full- or half duplex, auto-negotiated or manually set by DIP-

switches

Circuit type TNV-1

Transmission range 100 m

Isolation to Power 2 kVrms

RS-232 1.5 kVrms
RS-422/485 1.5 kVrms

Connection RJ-45 shielded, auto MDI/MDI-X

Shielded cable Not required, except when installed in Railway applications as

signalling and telecommunications apparatus and located close
to rails*

Conductive housing Isolated to all other circuits

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6616-2203

LED indicators, also
integrated in the RJ-45
connector.
(for details see next page)

S2 DIP-switch
Termination
(for details see page 25)

S1 DIP-switch under lid
(for details see page 25)

Ethernet 1
RJ-45 connection
(for details see next page)

Connections

Power connection
screw terminal

RS-232 (DTE)

* Direction relative this unit

RS-422/485 interface
screw terminal

The EDW-100 supports redundant power
connection. The positive input are +VA and
+VB, the negative input for both supplies are
COM. The power is drawn from the input
with the highest voltage.

4-position Direction* Description

No. 1 In R+

line RS-422

No. 2 In R–

line RS-422

No. 3 In/Out T+

line RS-422/485

No. 4 In/Out T–

line RS-422/485

4-position Description

No. 1 Common

No. 2 +VA

No. 3 +VB

No. 4 Common

9-position Direction Description

No. 1 N/C Not connected (DCD)

No. 2 In Received Data (RD)

No. 3 Out Transmitted Data (TD)

No. 4 Out Data Terminal Ready

(DTR)

No. 5 – Signal Ground (SG)

No. 6 In Data Set Ready (DSR)

No. 7 Out Request To Send (RTS)

No. 8 In Clear To Send (CTS)

No. 9 N/C Not connected (RI)

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6616-2203

LED Indicators

8
7

6

5
4

3
2
1

Ethernet

Ethernet TX connection (RJ-45 connector), automatic MDI/MDI-X crossover*.

CAT 5 cable is
recommended.
Unshielded (UTP)
or shielded (STP)
connector might be
used.

* Depend of settings on S1; 6, 7 and 8.

Contact Signal Name Direction Description/Remark

1 TD+ In/Out Transmitted/Received data

2 TD– In/Out Transmitted/Received data

3 RD+ In/Out Transmitted/Received data

4 NC

5 NC

6 RD– In/Out Transmitted/Received data

7 NC

8 NC

Shield HF-connected

LED Status Description

PWR

Power

OFF No internal power

ON Internal Power OK

TD

Transmit data

OFF No serial data transmitted from the unit,

(RS-232 or RS-422/485)

ON Serial data transmitted from the unit, (RS-232 or RS-422/485)

RD

Receive data

OFF No serial data received to the unit, (RS-232 or RS-422/485)

ON Serial data received to the unit, (RS-232 or RS-422/485)

RTS

Request to send

OFF No RTS to the RS-232 interface or RS-422/485 transmitting.

ON RTS to the RS-232 interface or RS-422/485 receiving.

CTS

Clear to send

OFF No CTS from the RS-232 interface

ON CTS from the RS-232 interface

LINK OFF No Ethernet link.

Cable not connected.

ON Good Ethernet link.

Flash Ethernet data is transmitted or received, traffic indication.

STAT

Status

OFF Normally Off

ON Telnet session established to Telnet diagnostics service or

Ongoing configuration by Web tool

RC

Remotely controlled

OFF DIP switch settings are valid.

ON One or more DIP switches are overrid by remote configuration

SPD

Speed Integrated in RJ-45
Green

ON Ethernet 100 Mbit/s

OFF Ethernet 10 Mbit/s

DPX

Duplex Integrated in RJ-45
Yellow

ON Full duplex

OFF Half duplex

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6616-2203

DIP-switch settings

Before DIP-switch settings:

Prevent damage to internal electronics from electrostatic discharges (ESD) by
discharging your body to a grounding point (e.g. use of wrist strap).

!

S1:1S1:8

Note! DIP-switch alterations are only effective after a power on.
A setting configured by any other method during normal operation, possibly overrides

the DIP-switch setting. However, an override situation is indicated by the RC LED.

S1* DIP-switch

ON

1 2 3 4 5 6 7 8

Normally OFF

* DIP switch functions may be override by WEB configuration tool. Override is indicated by RC LED. S1, 3, 4

and 5 not used.

ON

1 2 3 4 5 6 7 8

Enable local IP configure via serial
interface.

ON

1 2 3 4 5 6 7 8

Normally OFF

ON

1 2 3 4 5 6 7 8

Restore factory default.

ON

1 2 3 4 5 6 7 8

Ethernet Auto-negotiation enabled.
Auto-crossover enabled.
10 Mbit/s.

ON

1 2 3 4 5 6 7 8

Ethernet Auto-negotiation disabled.
Auto crossover (MDI/MDIX)
disabled. 10 Mbit/s.

ON

1 2 3 4 5 6 7 8

Ethernet 100 Mbit/s when Auto­negotiation disabled

ON

1 2 3 4 5 6 7 8

Ethernet 10 Mbit/s when Auto­negotiation disabled

ON

1 2 3 4 5 6 7 8

Ethernet Full duplex when Auto­negotiation disabled or is not
supported.

ON

1 2 3 4 5 6 7 8

Ethernet Half Duplex Auto­negotiation disabled or is not
supported.

S2 Below panel

4-wire termination.
120 ohm 4-wire termination and fail-safe

ON

1 2 3 4

2-wire termination.
120 ohm 2-wire termination and fail-safe

ON

1 2 3 4

Factory settings

ON

1 2 3 4

ON

1 2 3 4 5 6 7 8

S1 S2

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6616-2203

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.

Removal

Press down the black support at the top of the unit. See figure.

Mounting

This unit should be mounted on 35 mm DIN-rail, which is
horizontally mounted inside an apparatus cabinet, or similar.

Snap on mounting, see figure.

CLICK!

10 mm *

(0.4 inches)

25 mm

25 mm

* Spacing (left/right) recommended for

full operating temperature range

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6616-2203

Applications

=Termination

EDW-100

Slave unit Slave unit Slave unit

EDW-100

Slave unit Slave unit Slave unit

Max 0.3 metre

=Termination

T+

T–

T+T- T+T- AB

R+

R–

T+

T–

R– R+ R+T– T– B’ A’

BA

T+T+ R–

2-wire termination

4-wire termination

Termination recommendations

The RS-422/485 line must be terminated regardless of the cable length. The termination
is ideally placed at the extreme ends of the cable see examples above. The description
of the RS-422/485 pin outs will vary between manufactures. For some brands the T+
corresponds to A T- to B, R+ to A´ and R- to B´, but other brands might use some other
naming convention. If a unit does not work it can help to swap A and B. If difficulty is
being experience contact Westermo for further guidance.

RS-422/485 general advice

Power

SDRAM
8 MB

FLASH
2 MB

DIP-switch

JTAG

PROCESSOR

DEBUG

Data
Address
CTRL

MAC

XTAL

PHY

XTAL

CLK
RESET

5 V = >3.3 V

3.3 V = >1.5 V

PowerAPower

B

Connector

I/O

I/O

RJ-45

LED
stretch

D-sub

SERIAL CH 1

Ethernet 1

Power secondary 5 V

RS-232

Screw terminal

RS-422/485

Isolation from all other interfaces

Buffer size

Transmit Buffer 8Kbyte.
Receive Buffer 8Kbyte.

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6616-2203

One to many using UDP using broadcast or multicast

Description

The one to many function can be used in place of a traditional RS-422 or RS-485 multidrop
application. Data entering one of the EDW-100 will be broadcast or Multicast to any other device
in the broadcast or multicast group. A typical application would be a SCADA host computer
communicating to a number of PLC’s.

Point to point using TCP connection, server and client

Network

Network

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6616-2203

Point to point using UDP connection

Communication one to many using TCP

Description

In a point to point application the EDW-100 can be to replace or extend a cable link. The distance
between the EDW-100 units is only limited by the size of the LAN. Data can be sent across
the network using ether UDP or TCP. A typical application would be a SCADA or Data logging
application interrogating a sensor or PLC. To understand the differences between a UDP and TCP
please see page 16–17.

IP address:port = Com X
IP address:port = Com Y
IP address:port = Com Z

Virtual IP

Description

Many legacy software applications do not have any facilities to directly use Ethernet but there is a
requirement to use a newly installed or existing LAN to communication to many serial devices. This
problem is solved by installing a serial port redirection software on the host PC. The redirection
software works by creating virtual serial ports on the computer. The Virtual serial port can be
selected and use in the same way as a hardware based port. The serial redirection software will
encapsulate the serial data in a TCP/IP and send it to the relevant EDW-100 device. The EDW-100
will then strip off the TCP/IP frame and just forward the serial data to the target device. In th e
reverse direction the EDW-100 will encapsulate the data and the serial redirection software will
strip off the TCP/IP frame. The serial redirection software can create up to 255 serial comms ports
on a single computer.

Network

Network

REV. H 6616-2203 2016-04 Westermo Teleindustri AB, Sweden

Westermo • SE-640 40 Stora Sundby, Sweden

Tel [phone] Fax [phone]

E-mail: [e-mail]

www.westermo.com

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