Westermo EDW-100 EX User manual

©Westermo Teleindustri AB
www.westermo.com
Serial Adapter
User Guide
6616-2203
EDW-100

26616-2203
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.
GIndicates 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
1In/Out / TD+
U = ± 1 V (4μV/s)
I = ± 20 mA
Data rate:
10/100 Mbit/s
2In/Out / TD–
3In/Out / RD+
4Not connected
5Not connected
6In/Out / RD–
7Not connected
8Not 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
1In / Common Umin/max = 10 – 60 VDC
Imax = 300 mA
Pmax = 3 W
2In / +Voltage A
3In / +Voltage B
4In / 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
1Not connected (DCD)
Umax = ± 12 Vpk
Imax = ± 60 mA
Data rate:
0.3 – 115.2 kbit/s
2In / Received Data (RD)
3Out / Transmitted Data (TD)
4Out / Data Terminal Ready (DTR)
5– / Signal Ground (SG)
6In / Data Set Ready (DSR)
7Out / Request To Send (RTS)
8In / Clear To Send (CTS)
9Not connected
Position Descripton Input / Output values
1In / R+ line RS-422 Umax = ± 5 Vpk
Imax = ± 250 mA
Data rate:
0.3 – 115.2 kbit/s
2In / R– line RS-422
3In/out / T+ line RS-422/485
4In/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. identity 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
1Only 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 pre-
existing 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 EDW-
100 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)