Westermo ED-20 User Manual

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PPP Router

INSTALLATION MANUAL

6609-2222

www.westermo.com

ED-20 PPP

Westermo Teleindustri AB • 2004 • REV.A

Galvanic Isolation

Transient

Protection

Balanced

Transmission

Approved

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Contents

1. Description .................................................................................................................................................................. 3

2. Safety .................................................................................................................................................................................. 4

3. Approvals ....................................................................................................................................................................... 4

3.1 Declaration of Conformity ....................................................................................................................... 5

4. Specification ........................................................................................................................................................ 6–7

5. Maintenance .............................................................................................................................................................. 8

6. Installation .......................................................................................................................................................... 8–15

6.1 Mounting/Removal .......................................................................................................................................... 8

6.2 Connections ................................................................................................................................................ 9–11

6.3 Settings ................................................................................................................................................................. 12

6.3.1 Ethernet Router ................................................................................................................................. 12

6.3.1.1 DIP Switch Settings ................................................................................................... 12–13

6.3.2 Configuration ports ......................................................................................................................... 14

6.3.3 LED indicators .................................................................................................................................... 14

6.4 MAC address .................................................................................................................................................... 15

6.5 Installation of ED-Tool for ED-20 .................................................................................................... 15

7. Functional description .................................................................................................................... 16–17

7.1 Application mode ......................................................................................................................................... 16

7.1.1 About PPP .............................................................................................................................................. 16

7.1.2 Network interfaces .......................................................................................................................... 16

7.1.2.1 Ethernet connection ........................................................................................................... 16

7.1.2.2 PPP connection ....................................................................................................................... 16

7.1.2.3 Brouter function ..................................................................................................................... 17

7.1.2.4 Firewall function ..................................................................................................................... 17

7.1.2.5 Proxy ARP function .............................................................................................................. 17

7.2 Configuration mode .................................................................................................................................. 17

8. Configuration .............................................................................................................................................. 18–31

8.1 Configuration by ED-Tool for ED-20 ............................................................................................. 18

8.1.1 ED-Tool for ED-20 commands ................................................................................................ 19

8.1.1.1 General commands ............................................................................................................. 19

8.1.1.2 Serial Interface – Channel 1 specific commands .......................................... 19

8.1.1.3 Modem Settings ............................................................................................................ 20–21

8.1.1.4 Network Settings .................................................................................................................. 22

8.1.1.5 Brouter Settings ..................................................................................................................... 23

8.1.1.6 Firewall Settings ..................................................................................................................... 24

8.2 Configurable parameters .............................................................................................................. 25–31

8.2.1 Serial interface .................................................................................................................................... 25

8.2.2 Modem settings ........................................................................................................................ 25–29

8.2.3 Network Settings .................................................................................................................... 29–30

8.2.4 Brouter settings ........................................................................................................................ 30–31

8.2.5 Firewall Settings ................................................................................................................................ 31

9. Application examples ....................................................................................................................... 32–35

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1. Description

The ED-20 is an industrialised DIN Rail mounted, serial to Ethernet Router. The device will allow access to a remote Ethernet network via a Westermo communication product. The device is easy to set-up using the ED-Tool for ED-20, via TELNET or serial connection.

Standard PPP dial-up networking tools can be used from Microsoft Windows 9x, ME, NT, 2000 or XP. Any other platform supporting the PPP protocol could equally be used.

Passwords are provided to increase the remote site security. Once connected to the remote network all TCP/IP, FTP,TELNET and UDP protocol types can be used. Connection to the ED-20 is via 10Base-T on the Ethernet and RS-232 on the serial side. The serial port supports speeds up to 115 kbit/s.

Total galvanic isolation ensures that the data communication will not be effected by ground loops or transfer electrical noise between communications ports.The high EMC specification, like all other Westermo production ensures reliability of operation in the harshest of site conditions.

ED-20

TD-33

TD-35

PSTN

TCP/IP

Ethernet

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2. Safety

General:

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.

Before installation, maintenance or modification work:

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

Prevent access to hazardous voltages by disconnecting the unit from AC/DC mains supply and all other electrical connections.

Installation:

This unit should only be installed by qualified personnel. This unit should only be installed in a “restricted access area”, for example

a lockable cabinet where access is restricted to service personnel only. This unit is intended for permanent connection to the AC/DC mains supply. The power supply wiring must be sufficiently fused, and if necessary it must be

possible to disconnect manually from the AC/DC mains supply. Ensure compliance to national installation regulations.

Units with the rated voltage exceeding 42.4 V peak or 60 VDC, are defined as class I equipment with a protective earthing conductor terminal.

Units with the rated voltage up to 42.4 V peak or 60 VDC, are defined as class III equipment and shall be separated from hazardous voltage by double or reinforced insulation.

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

3. Approvals

Conformity with the Directive 89/339/EEC (Electromagnetic compatibility) has been assessed by application of standards EN 61000-6-2 (industrial immunity) and EN 61000-6-4 (industrial emission).

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3.1 Declaration of Conformity

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4. Specification

ED-20

Rated voltage 12 – 48 VDC (polarity independent) Operating voltage 9.6 – 57.6 VDC Rated current 300 mA @ 12 VDC Rated frequency DC Connection Detachable screw terminal Connector size 0.2 – 2.5 mm

(AWG 24-12)

Power interface

Ethernet TX Interface 10Base-T

Electrical specification IEEE std 802.3. 2000 edition Data rate 10 Mbit Duplex Half Connection RJ-45 Circuit type TNV-1 Transmission range 100 m

RS-232 Interface 1 (CH-1)

Electrical specification RS-232 V.24 Data rate 1200 bit/s – 115.2 kbit/s Connection 9-pol. D-sub female DCE Circuit type SELV

RS-232 Interface 2 (CH-2)

Electrical specification RS-232 V.24 Data rate 19.2 kbit/s Connection 9-pol. D-sub female DCE Circuit type SELV

RS-422 Interface (CH-1)

Electrical specification RS-422 Data rate 1200 bit/s – 115.2 kbit/s Connection Detachable screw terminal Connector size 0.2 mm

– 2.5 mm2(AWG 24-12)

Circuit type TNV-1

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Mechanical

Dimension (W x H x D) 55 x 100 x 128 mm Weight <0.35 kg Mounting DIN-rail Degree of protection IP 20 (IEC 529)

Isolation between interfaces

Power to all other* 4.2 kV DC, 3 kV RMS @ 50 Hz and 60s duration TX signal Interface to all other 2.1 kV DC, 1.5 kV RMS @ 50 Hz and 60s duration TX shield Interface to all other 1.5 kV DC, 1 kV RMS @ 50 Hz and 60 s duration

Environmental

Temperature, operating +5 to +50°C Temperature, storage

and transportation –25 to +70°C Relative humidity, operating 5 to 95% (non-condensing) Relative humidity,

storage and transportation 5 to 95% (condensation allowed outside packaging)

Configuration

Configuration of the Router is made with DIP-switches and with ED-tool for ED-20 locally via RS-232 port or remotly via Ethernet.

* Power to network interface, 2.1 kV DC, 1.5 kV RMS @ 50 Hz and 60 s duration.

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5. Maintenance

No maintenance is required, as long as the unit is used as intended within the specified conditions.

6. Installation

6.1 Mounting / Removal

Before mounting or removing the unit:

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

Prevent access to hazardous voltages by disconnecting the unit from AC/DC mains supply and all other electrical connections.

Mounting

This unit should be mounted on 35 mm DIN-rail which is horizontally mounted on a wall or cabinet backplate.

This unit uses convection cooling.To avoid obstructing the airflow around the unit, use the following spacing rules. Recommended spacing 25 mm (1.0 inch) above/below and 10 mm (0.4 inches) left/right the unit.

Snap on mounting, see figure

Removal

Press down the black support at the back of the unit using a screwdriver, see figure.

10 mm *

(0.4 inches)

25 mm

* Spacing (left/right) recommended

for full operating temperature range

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6.2 Connections

Power

LED indicators

Channel 1: RS-232 connection

Channel 1: RS-422 connection

Channel 2: RS-232 connection

Ethernet 10Base-T connection

8 7

5 4

3 2 1

Ethernet 10Base-T Connection (RJ-45 connector) Media Dependent Interface (MDI)

Contact Signal Name Direction** Description

1 TD+ Out Transmitted Data

2 TD– Out Transmitted Data

3 RD+ In Received Data

4NC

5NC

6 RD– In Received Data

7NC

8NC

** Direction relative ED-20 NC Not connected

CAT 5 cable is recomended. Unshielded (UTP) or shielded (STP) cables might be used.

Pin Signal Name*

Direction** Description

Number Description V.24 RS-232C

1 DCD 109 CF – Data Carrier Detect, NC 2 RD 104 BB Out Received Data 3 TD 103 BA In Transmitted Data 4 DTR 108.2 CD – Data Terminal Ready, NC 5 SG 102 AB In/Out Signal Ground 6 DSR 107 CC – Data Set Ready, NC 7 RTS 105 CA In Request to Send, NU 8 CTS 106 CB Out Clear to Send, NU 9 RI 125 CE – Ring Indicator, NC

Pin Signal Name*

Direction** Description

Number Description V.24 RS-232C

1 DCD 109 CF Out Data Carrier Detect 2 RD 104 BB Out Received Data 3 TD 103 BA In Transmitted Data 4 DTR 108.2 CD In Data Terminal Ready 5 SG 102 AB In/Out Signal Ground 6 DSR 107 CC Out Data Set Ready 7 RTS 105 CA In Request to Send 8 CTS 106 CB Out Clear to Send 9 RI 125 CE – Ring Indicator, NC

CH1: RS-422 Connections (Upper left screw terminal)

* Numbered right to left (front view). ** Direction relative ED-20.

Twisted pair cable is recommended

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CH1: RS-232 Connections, DCE

* Functionality might differ from standard ** Direction relative ED-20 NC Not connected

CH2: RS-232 Connections, DCE

* Functionality might differ from standard ** Direction relative ED-20 NC Not connected NU Not used

543

Terminal

Signal Name*

Number

Marked on According

ED-20 to Standard

Direction** Description

1 SG – – Not connected 2 T– B Out RS-422 4-wire Transmitter 3 T+ A Out RS-422 4-wire Transmitter 4 R– B’ In RS-422 4-wire Receiver 5 R+ A’ In RS-422 4-wire Receiver

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ED-20

(ED-20)

=Termination

4-wire termination

R+

R–

T+

T–

R– R+ T– T+

RS-422 general advice

4-wire

Twisted pair cable is recommended

Termination recommendations

The RS-422 line must be terminated. The receiver on each side shall be terminated. RS-422 connection pins can be differently named.For some brands the T+ corresponds

to A, but other brands might use some other naming convention. If a unit does not work it can help to swap A and B.

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6.3. Settings

6.3.1. Channel 1 serial interface

Settings of the Ethernet Router are made with DIP switches and with ED-Tool for ED-20 (Windows based configuration software).

6.3.1.1. DIP Switch Settings

DIP-switches are accessible under the lid on top of the unit. DIP-switches are used to set-up the serial port.

Warning!

Prevent damage to internal electronics from electrostatic discharges (ESD) by discharging your body to a grounding point (e.g. use of wrist strap), before the lid on top of the unit is removed.

Warning! Do not open connected equipment.

Prevent access to hazardous voltages by disconnecting the unit from AC/DC mains supply and all other electrical connections.

NOTE! Always reboot the unit after any changes

of the DIP-switches has been made.

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Termination and fail safe

(4-wire) Channel 1

Port type

Channel 1

12345678

RS-422

12345678

RS-232

Factory settings

12345678

Not used

12345678

Channel 1

12345678

Termination and fail safe off

12345678

120 Ω termination

between R+ and R– Terminal open interpreted as Mark (1)

IC2

Not used with RS-232

S2: 1–8

S1: 1–8

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6.3.2 Configuration ports

The unit have two configuration ports, locally via the RS-232 port (Channel 2) and remotely via Ethernet (Telnet port).

6.3.3 LED indicators

Indicators (LED) Power (PWR)

Link (NET) Serial status,TD, RD, RTS and CTS Configuration

LED Status Indication of

PWR ON Power OK

OFF No Ethernet link

NET ON Good Ethernet link

Flash* Ethernet data is transmitted or received, traffic indication

CONFIG ON Configuration mode (unit has been reconfigured,

new parameters not valid until a reboot has been made)

OFF Application mode (or during start up of configuration mode)

Serial specific indication of

RS-232 selected RS-422 selected**

TD ON Received data on serial port Received data on serial port RD ON Transmitted data on serial port Transmitted data on serial port RTS** OFF Request To Send deactivated Always OFF

ON Request To Send activated

CTS** OFF Clear To Send deactivated Shall always be OFF

ON Clear To Send activated Reconfigure flow control

* Constant flashing at constant rate may indicate a speed mismatch ** Only on channel 1

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6.4 MAC address

The MAC address of the unit can be found on the product label “00 30 56 F” + last 5 digits on IC2 see figure in section 6.3 Switch settings on page 13. Example: Label on IC2 “SC12 RTOS 0092C2” this will give the unit MAC address “00 30 56 F0 92 C2”

The MAC address can also be find out with the DOS command “ARP –a”. (Perform the “PING” command with the ED-20 local IP address before the ARP command.)

6.5 Installation of ED-Tool for ED-20

This section describes the installation of ED-Tool for ED-20.

System Requirements:

To install and run the ED-Tool for ED-20 program following requirements are needed.

Minimum:

… 386, 486 or Pentium‚ Processor-based personal computer … Microsoft‚ Windows‚ 95/98/Me, Windows NT 3.51/4.0‚

or Windows 2000‚ Windows XP, compatible OS … 16 MB of RAM for Windows 95/98/Me systems … 24 MB of RAM for Windows NT systems … 32 MB of RAM for Windows 2000/XP systems … CD-ROM drive … 8 MB of space on hard drive … Serial and/or Ethernet network connections … Internet Explorer 5.0 or higher

Recommended:

… Pentium processor-based personal computer … 32 MB of RAM

Installation:

To install ED-Tool for ED-20

… Insert the ED-Tool for ED-20 CD-ROM into the CD-ROM drive … Locate the ‘setup.exe’ file on the ED-Tool for ED-20 CD-ROM … Run the ‘setup.exe’ and follow the instructions

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7. Functional description

The ED-20 can be in either configuration mode or in application mode. Normally the ED-20 is in application mode, where the serial-to-network data transfer is enabled and all configuration settings are readable.

Change of configuration parameters are done in ED-20 configuration mode. Configurable parameters are listed in chapter 8.2.

7.1 Application mode

In application mode the ED-20 transfers data between the serial interface (CH1) and the network interface (10Base-T). At the network interface data is transferred using the TCP/IP protocol suit. At the serial interface data is transferred using PPP.

7.1.1 About PPP

PPP (the Point to Point Protocol) is a mechanism for creating and running TCP/IP over a serial link – a direct serial connection or a link made using one of following: Westermo analogue PSTN-, Leased-line-, ISDN-, GSM-, Fibre- or Short-haul modem. Other computers can connect via the ED-20 and communicate over the PPP link using FTP,Telnet,Web, etc. in the same manner as with an Ethernet TCP/IP link. One major difference between a PPP and an Ethernet connection is of course the speed.A standard Ethernet connection operates at 10 Mbit/100 Mbit maximum theoretical throughput, whereas an analogue modem operates at speeds up to 56 kbit.

PPP is strictly a peer to peer protocol; there is no difference between the machine that dials in and the machine that is dialed into. However, it is still useful to think in terms of servers and clients.When you dial into a site to establish a PPP connection, you are a considered the client.The machine to which you connect is considered the server.

Authentication is provided with the protocols PAP or CHAP.

7.1.2 Network interfaces

ED-20 has two network interfaces, Ethernet and PPP, so the unit can forward IP-packets between these interfaces.

7.1.2.1 Ethernet interface

This interface is a part of the local network and the ‘Local IP Address’* and ‘Subnet Mask’ must be set to the right ‘Network ID’

7.1.2.2 PPP Network interface

The PPP connection can be established over PSTN, Leased Line or private lines. ED-20 can act as a PPP Server, PPP Client or both.These functions is set on the ‘Modem settings’ tab in ED-Tool for ED-20. See application example in chapter 9.

* The IP address must be compliant to the attached network. Ask the network administrator when in doubt.

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Connections can be established in several ways depending on the application:

• Standard PPP dial-up networking tool.

• ‘Connect’ command on CH2: or via TELNET

• Using the ‘Brouter’ function.

7.1.2.3 Brouter function

The Brouter function will establish a dial-up connection when valid outbound IP address (Defined on the tab ‘Brouter Settings’ in ED-Tool for Ed-20) is sent to the ED-20. See application example on page 34.

The connection will be open until one of following is true:

• There is no traffic during and the ‘Idle Time’ parameter is set to a value greater

than zero. e.g. Idle Time is set to 600s and there is no traffic sent to the ED-20 for more than 10 minutes.

• ‘Close’ command on CH2: or via TELNET

Note! It may be wise to use the Firewall function while the Brouter function being used to reduce the traffic over the PPP link.

7.1.2.4 Firewall function

The Firewall function can be set-up to allow or block certain IP Addresses through the ED-20. See application example on page 34.

7.1.2.5 Proxy ARP function

The Proxy ARP function can be activated and used to divide an existing network into several networks and keep the original IP address settings. I.e the networks would appear to be one single network instead of multiple networks connected to each other.This will allow the connected equipment to communicate to each other without using gateways and is a benefit when attaching equipment not supporting gateway functionality.

7.2 Configuration mode

Local or remote configuration is managed by ED-Tool for ED-20. ED-Tool for ED-20 is a Windows based set-up program which provides easy configuration. Configuration is possible locally by using serial connection and remote using network (telnet) connection. Configuration mode will be entered automatically by ED-Tool for ED-20. ’Config ’ LED will lit when ED-20 is in configuration mode. (The unit is not in configuration mode until the ‘Write config’ button been pushed.) The unit will be in configuration mode until a reboot is made.

First time configure: ED-20 is shipped with IP-address 169.254.100.100. Please make sure that 169.254.100.100 is compliant to your network, before ED-20 is connected. Otherwise use serial interface to locally set a valid IP address compliant with the network in use and not chosen arbitrarily, ask your network administrator when in doubt.

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8. Configuration

Before read, write or reboot can be made, Select type of connection:

• Network

• Serial com port must be selected from menu ‘Tools – Serial COM Port’

8.1 Configuration by ED-Tool for ED-20

This section describes the configuration of the ED-20 with the software ED-Tool for ED-20.

Program Start:

To start ED-Tool for ED-20

• Locate ED-Tool for ED-20 under Program/Westermo on the Start-Menu.

• Click on the ED-Tool for ED-20 icon

When the ED-Tool for ED-20 has been successful opened the user is presented with an empty configuration screen.The user can now get an existing configuration by reading the configuration from an ED-20, create a new file from default values or by opening a stored configuration file.

After all the parameters are set the user can write the configuration to the ED-20.

Typical configuration procedures:

• Read configuration from an ED-20

• Change some parameters

• Write configuration to the ED-20

• Reboot

• Done

• Read configuration from a file

• (Change some parameters)

• Write configuration to the ED-20

• Reboot

• Done

• Set parameters

• Write configuration to ED-20

• Reboot

• Done

• Set parameters

• Save configuration to a file

• Done

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8.1.1 ED-Tool for ED-20 commands

This section describes the ED-Tool for ED-20 commands. The commands are described by there use. Details about allowed values and default values is described is section 8.2.

8.1.1.1 General commands

1 Selects type of connection, Serial or over the Network.

If ‘Serial’ is selected, use the “Tools menu – Serial COM port” to select which of COM1:, COM2:, COM3:, or COM4: your serial cable is connected to.

2 Read Config Reads configuration from the ED-20. 3 Write Config Writes configuration to the ED-20.

Note! ED-20 must be rebooted before any new configuration

is activated.

4 Reboot Reboots the ED-20.

8.1.1.2 Serial Interface – Channel 1 specific commands

Communication 5 Data Rate Selects Data Rate for serial communication, ED-20 – Modem.

6 Flow Control Selects if flow control is used or not.

Note! All interconnecting wires are required between the ED-20

and the attached modem.Flow control must be set to none when using RS-422.

57600

RTS/CTS

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PSTN

1 2 3 4 5 6 7

8.1.1.3 Modem Settings

General 1 Modem Select Type of connection, PSTN or LL.

Connection • Use PSTN for dial-up connections, e.g. Phone modem, GSM

modem or ISDN adapter.

• Use LL for fixed connections, e.g. LeasedLine-, Radio-, Fibreor any Short-haul- modem.

2 Dial IN/OUT Select if the ED-20 shall act as a PPP Server, PPP Client or both.

When the unit is set to be a server, it will answer incoming calls.

3 Connect at Select if the ED-20 shall initiate a connection at power on

PWR On with the Modem Connect (Dial Out) command.

4 DCD Control Select if the ED-20 shall disconnect the PPP link at modem DCD

loss. Note! All interconnecting wires are required between the ED-20

and the attached modem.

5 Escape Set the modem escape sequence wich switches the modem into

Sequence command mode. Not used for Leased Line mode. Usually ‘+++’.

6 Escape Delay Set the delay time in seconds after the escape sequence before

any other command.

7 Idle Time Set the idle time in seconds, after which the PPP server closes the

connection if no data being sent.

DIAL IN/OUT

+++

600

AT&F&DOSO

ATDS=0

CONNECT

60 0

ATH

RING

ATA

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AT&F&DOSO

ATH

ATDS=0

CONNECT

60 0

RING

ATA

9 10 11 12 13 14 15

16 17 18

19 20 21

Modem Init

8 Command Set the modem init string. 9 Answer Set the expected answer from the modem on the command

string. Note! Modem result codes must be enabled.

10 Timeout Set the timeout in seconds for how long the ED-20 shall wait

for the answer string.

11 Retries Set the number of retries before the modem init fails.

Modem Hangup 12 Command Set the modem hangup string.

13 Answer Set the expected answer from the modem on the command

string. Note! Modem result codes must be enabled.

14 Timeout Set the timeout in seconds for how long the ED-20 shall wait for

the answer string.

15 Retries Set the number of retries before the modem hangup fails.

Modem Connect (Dial Out) 16 Command Set the modem connect string.

17 Answer Set the expected answer from the modem on the command.

string. Note! Modem result codes must be enabled.

18 Timeout Set the timeout in seconds for how long the ED-20 shall wait for

the answer string.

19 Retries Set the number of retries before the modem connect fails.

Modem Connect (Dial In) 20 Command Set the modem connect string.

21 Answer Set the expected answer from the modem on the command. 22 Timeout Set the timeout in seconds for how long the ED-20 shall wait for

the answer string.

Modem AT-Commands

Refer to the user guide or installation manual to the attached modem.

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6 7 8 9

8.1.1.4 Network Settings

2 Username Set the login username.

This is also used for Telnet sessions (Network configuration).

3 Password Set the login password

This is also used for Telnet sessions (Network configuration).

PPP Network Interface* 4 Local IP Set the Server IP address.

5 Remote Address Set the Client IP address. 6 Subnet Mask Set the Subnet mask.

Ethernet Interface* 7 Local IP Address Set the Local IP address i.e. the address of the ED-20. 8 Subnet Mask Set the Subnet mask. 9 Proxy Arp Set the Proxy ARP funktion Off/On.

* The IP address must be compliant to the attached network.Ask the network administrator when in doubt.

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8.1.1.5 Brouter Settings

Brouter Mode 1 Off / On Disables or enables the Brouter mode.

See 8.2.4

Brouter Settings 2 IP Address Set the target IP address that shall initiate a connection.

3 Connect Set the Connect message that shall be sent to the attached

Message modem. E.g. ATDnnnnnn

4 Add >> Adds the values IP Address and Connect message to the

brouter entry list

5 Remove ... Remove marked entry from entry list. 6 Brouter Entry List

Displays the Brouter entry’s: IP Address, Connect message. Up to 32 entry’s can be added.

• To Add an entry: Fill in the field IP Address and the field Connect message, Press add.

• To Edit an entry: Double click the entry that shall be edited, Edit the values in the fields to the left, Press add.

• To Remove an entry: Click the entry that shall be removed, Press remove.

. . .

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. . .

8.1.1.6 Firewall Settings

Firewall Mode 1 Off / Pass / Block Disables or enables the Firewall mode and selects if the firewall

shall work in Block or Pass mode. See 8.2.5

Firewall Settings 2 IP Address Set the source and destination IP addresses that shall be allowed

to pass through the ED-20, or set the source or destination IP addresses that shall be blocked from passing through the ED-20.

3 Add>> Adds the values IP Address and Connect message to the

Firewall entry list.

4 Remove ... Remove marked entry from entry list. 5 Firewall Entry List.

Displays the Firewall entry’s: IP Address. Up to 32 entry’s can be added.

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8.2 Configurable parameters

8.2.1 Serial interface

Communication

Data Rate

The data rate can be set from 1 200 bit/s to 115.2 kbit/s.

Allowed values:

1 200, 2 400, 4 800, 7 200, 9 600, 14 400, 16 000, 19 200, 38 400, 56 000, 57 600 and 115 200 bit/s.

Default: 57 600 bit/s.

Flow Control

Flow control can be chosen between NONE or RTS/CTS. If the RTS/CTS being used then the cable must have all interconnecting wires between the ED-20 and the modem connected and the modem shall have the flow control enabled.

Note! When RS-422 is selected for channel 1, set flow control to NONE.

Allowed values: None, RTS/CTS Default: RTS/CTS.

8.2.2 Modem settings

General

The general settings is used to set the fundamental modes of the ED-20.

Modem Connection

Type of modem connection can be selected between PSTN (Public Switched Telephone Network) and LL (Leased Line). PSTN shall be used for dial-up/dial-in connections with PSTN, ISDN or GSM modem. LL shall be used in fixed connections, e.g. short-haul-, fibre-, LL-modem. In LL mode the unit will not use any modem AT-commands, Modem escape sequence, AT-commands and the Brouter function will be disabled.The modem will be handled as a transparent connection.

Allowed values: LL, PSTN Default: PSTN.

Communication

General

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Dial IN/OUT

Select the operating mode of the ED-20.

-Dial IN, The unit will act as an PPP Server and only accept incoming calls. Modem Connect (Dial OUT) and the Brouter function will be disabled.

-Dial IN/OUT, The unit will act both as an PPP Server and an PPP Client. When an incoming call is detected then the PPP Client is disabled. –Dial OUT, The unit will act as an PPP Client and not accept incoming calls. Modem Connect (Dial IN) and the function Connect at PWR on will be disabled.

Allowed values: Dial IN, Dial IN/OUT, Dial OUT Default: Dial IN/OUT

Connect at PWR on

Selects if the ED-20 shall establish a connection at Power on or not. In PSTN mode the ED-20 will dial up using the command string defined in Modem Connect (Dial OUT) and when the modem link is ready, Establish the PPP link. In LL Mode the ED-20 will establish the PPP link. This function is disabled in Dial IN mode.

Allowed values: NO,YES Default: NO

DCD Control

When the signal DCD is lost the ED-20 will close the PPP link and when PSTN mode is selected the AT commands for Modem hangup and Modem init will be sent to the modem. This function requires a special cable.

Allowed values: NO,YES Default: NO

TD-XX

With 9-pos. female

DCE connection

9-pos. female 9-pos. female 25-pos. female 9-pos. female

ED-20

With 9-pos. female

DCE connection

2 3 8 7 4 5 1

3 2 7 8 6 5 4

TD-XX

With 25-pos. female

DCE connection

ED-20

With 9-pos. female

DCE connection

3 2 5 4

7 8

3 2 7 8 6 5 4

Escape Sequence

When communication is established with another modem it is still possible to reach the command mode by sending an escape sequence to the modem. Note! Refer to the user guide or installation manual to the attached modem.

Default: +++

276609-2222

Escape Delay

Define the delay time in seconds after the escape sequence been sent until the next AT-command will be sent.

Allowed values, 1 to 9999

If this value is set to zero, the unit will do nothing but wait!

Default: 2 (seconds)

Idle Time

If no data is being sent over the PPP link the ED-20 will close the connection. Define the time in seconds.

Allowed values, 0, 1 to 9999 Default: 0 (function disabled)

Modem AT-Commands

Commands used in PSTN mode for controlling the behaviour of the attached modem.

Note! Refer to the user guide or installation manual to the attached modem.

Modem Init

Command

Init string that will be sent to the modem.

Default:AT&F&D0S0=0&K3+MS=V34;&W

Answer

Expected answer from the modem on the sent command. Allowed string length: 25 characters.

Default: OK

Timeout

Define the time in seconds between the sent command and the expected answer before the command have failed.

Allowed values: 0 to 9999 Default: 3

Retries

Define the number of retries in case if a failed command.

Allowed values: 0 to 9999 Default: 1

Modem Hangup

Command

Hangup string that will be sent to the modem. Allowed string length: 25 characters.

Default:ATH

Modem AT-Commands

Modem Init

Modem Hangup

28 6609-2222

Answer

Expected answer from the modem on the sent command.

Default: OK

Timeout

Define the time in seconds between the sent command and the expected answer before the command have failed.

Allowed values: 0 to 9999 Default: 3

Retries

Define the number of retries in case if a failed command.

Allowed values: 0 to 9999 Default: 1

Modem Connect (Dial Out)

Command

Dial out string that will be sent to the modem. Allowed string length: 25 characters

Default:ATDS=0 (dials the stored number in location 0, stored with AT&Z command)

Answer

Expected answer from the modem on the sent command.

Default: CONNECT

Timeout

Define the time in seconds between the sent command and the expected answer before the command have failed.

Allowed values: 0 to 9999 Default: 60

Retries

Define the number of retries in case if a failed command.

Allowed values: 0 to 9999 Default: 1

Modem Connect (Dial In)

Command

Dial in string that will be sent from the modem on an incoming call. Allowed string length: 25 characters

Default: RING

Answer

Command that will answer the incoming call.

Default:ATA

Modem Connect (Dial Out)

Modem Connect (Dial In)

296609-2222

Timeout

Define the time in seconds, For how long time the ED-20 will accept incoming calls from power-up. Normally not used, leave as is.

Allowed values: 0-9999 Default: 0

8.2.3 Network Settings

The login username and password is used on the dial-in connection and when the ED-20 is configured with ED-Tool for ED-20 over a network connection.

Authentication

Select if authentication shall be used over the PPP link or not. Authentication can be used with either the PAP (Password Authentication Protocol) or CHAP protocols (Challenge Handshake Authentication Protocol) If a invalid Username or password is entered the ED-20 will disconnect the PPP link and cause the modem to disconnect.

Allowed values: NONE, PAP, CHAP Default: NONE

Username

Allowed string length: 1 – 19 characters. Allowed characters: ‘0’ to ‘9’, ‘a’ to ‘z’ lower case. Default: ed20

Password

Allowed string length: 1 – 19 characters. Allowed characters: ‘0’ to ‘9’, ‘a’ to ‘z’ lower case. Default: ed20

PPP Network Interface

These values is used when the ED-20 is in Server mode. The server will provide the IP addresses for the PPP link.

Note! When connecting to a private remote network via the ED-20 using Windows

network connection wizard, Always Obtain an IP address automatically

Local IP*

When the ED-20 is in server mode, this will be the Servers IP address on the PPP link

Note! The Network ID must be different than the Network ID on the remote net-

work and the Network ID locally.

Allowed values: Should be in decimal dotted notation in one off the following ranges:

1.0.0.0 126.0.0.0

128.1.0.0 191.255.0.0

192.0.1.0 223.255.255.0 Default: 169.254.200.100

PPP Network Interface

* The IP address must be compliant to the attached network.Ask the network administrator when in doubt.

30 6609-2222

Remote address*

When the ED-20 is in server mode, this will be the Clients IP address on the PPP link Allowed values: Should be in decimal dotted notation And have the same

Network ID as Local IP and different then Local IP

Default: 169.254.200.101

Subnet Mask*

Set a valid subnet mask in decimal dotted notation.

Default: 255.255.255.0

Ethernet Interface

Local IP Address*

This is the address of the router and this address shall be used as default gateway in the units that will use the ED-20 as a gateway.

Set the local IP address in the rage of the Network ID. Note! The Network ID must be different than the Network ID on the PPP link

and the Network ID on the other network.

Allowed values: Should be in decimal dotted notation in one off the following ranges:

1.0.0.0 126.0.0.0

128.1.0.0 191.255.0.0

192.0.1.0 223.255.255.0

Default: 169.254.100.100

Subnet Mask*

Set a valid subnet mask in decimal dotted notation.

Default: 255.255.255.0

Prox Arp

Enable or disable the Proxy ARP function with the radio buttons.

Default: OFF

8.2.4 Brouter settings

The brouter function will initiate outgoing connections. This function is only available in PSTN + Dial Out mode (Refer to section 8.2.2 – General – Modem settings and Dial IN/OUT.) When a IP packet sent to the ED-20 have a IP Address that match a IP Address in the entry list, the ED-20 will send the connect message to the attached modem.This will result in an connection to another location and establishment of a PPP link. Note! Since the ED-20 and the attached modems need some time to establish a modem

connection and a PPP link, The IP packets sent before the PPP link is ready may be lost depending of the application used.

* The IP address must be compliant to the attached network.Ask the network administrator when in doubt.

Ethernet Interface

316609-2222

Brouter Mode

Enable or disable the brouter function with the radio buttons. Note! The brouter function can only be enabled when the ED-20 is allowed to act

as a PPP client. (Refer to section 8.2.2 – General – Dial IN/OUT.)

Default: Off

Brouter Settings

IP Address

Allowed values: Should be in decimal dotted notation and in another Network ID than the Local IP Address of the ED-20.

(Refer to section 8.2.3 – Ethernet Interface – Local IP Address)

Connect Message

This message will establish the modem connection. Allowed values: Is decided by the attached modem.

Note! Refer to the user guide or installation manual to the attached modem.

8.2.5 Firewall settings

The firewall function will allow the network administrator to control the network access and limit the traffic on the PPP link. It’s possible to accomplish this in two modes.

- Pass,Will only allow traffic where the source and destination IP address is present in

the entry list.

- Block,Will block traffic where either source or destination is present in the entry list.

See application exampes on page 34.

Firewall Mode

Disables or enables the Firewall mode with the radio buttons. And selects if the firewall shall work in Block or Pass mode.

Default: Off

Firewall Settings

IP Address

Allowed values: Should be in decimal dotted notation.

Brouter Mode

Brouter Settings

Firewall Mode

Firewall Settings

32 6609-2222

9. Application examples

Example of application with IP address settings.

Remote connection – LAN (Dial In)

LAN – LAN (Leased Line)

169.254.200.100

169.254.200.101

255.255.255. 0

169.254.100.100

255.255.255. 0

DIAL IN

PSTN

LAN

PLC

ED-20

TD-33

Remote connection

TD-33

IP: 169.254.100.101 GW: 169.254.100.100

IP: 169.254.100.102 GW: 169.254.100.100

169.254.200.100

169.254.200.101

255.255.255. 0

169.254.100.100

255.255.255. 0

169.254.200.100

169.254.200.101

255.255.255. 0

169.254.100.100

255.255.255. 0

+++

DIAL IN/OUT

L.L

+++

DIAL IN/OUT

L.L

YES

LAN

PLC

ED-20

TD-34

Leased Line

P P

R O

T E

R S e r

i a

l I n

t e

r f a

ED-20

E D

P P

P R

O U

T E

R S e r

i a l

I n t e

r f a

TD-34

IP: 179.254.100.101 GW: 179.254.100.100

IP: 179.254.100.102 GW: 179.254.100.100

IP: 169.254.100.101 GW: 169.254.100.100

IP: 169.254.100.102 GW: 169.254.100.100

336609-2222

LAN – LAN (PSTN, GSM)

+++

DIAL IN/OUT

PSTN

600

+++

DIAL IN/OUT

PSTN

600

PSTN

LAN

PLC

ED-20

GD-01

ED-20

TD-33/V.90

ID-90/V.90

LAN

34 6609-2222

LAN – LAN (PSTN, Brouter, Firewall)

169.254.100.101

ATDnnnnnn

PLC

TD-34

PLC

ED-20

TD-34

IP: 179.254.100.101 GW: 179.254.100.100

IP: 179.254.100.102 GW: 179.254.100.100

IP: 169.254.100.101 GW: 169.254.100.100

ED-20

169.254.100.135

. . .

PSTN

169.254.100.101 ATDnnnnnn

LAN

PLC

IP: 169.254.100.102 GW: 169.254.100.100

IP: 169.254.100.135

LAN

169.254.200.100

169.254.200.101

255.255.255. 0

179.254.100.100

255.255.255. 0

169.254.200.100

169.254.200.101

255.255.255. 0

179.254.100.100

255.255.255. 0

E D

P P R

O U

T E

e r

i a l

I n t e

r f a

c e

P P P

O U

T E

R S e

r i a

l I

n t

e r f a

356609-2222

LAN – LAN (LL, Brouter, Firewall)

T04-0194 • 6609-2222 04.05 Mälartryck AB, Eskilstuna, Sweden

Westermo Teleindustri AB • SE-640 40 Stora Sundby, Sweden

Phone +46 16 42 80 00 Fax +46 16 42 80 01

E-mail: info@westermo.se

Westermo Web site: www.westermo.com

Westermo Teleindustri AB have distributors in several countries, contact us for further information.

Westermo Data Communications Ltd Unit 14 Talisman Business Centre • Duncan Road Park Gate, Southampton • SO31 7GA Phone: +44(0)1489 580 585 • Fax.:+44(0)1489 580586 E-Mail: sales@westermo.co.uk

Westermo Data Communications GmbH Goethestraße 67, 68753 Waghäusel Tel.: +49(0)7254-95400-0 • Fax.:+49(0)7254-95400-9 E-Mail: info@westermo.de

Westermo Data Communications S.A.R.L. 9 Chemin de Chilly 91160 CHAMPLAN Tél : +33 1 69 10 21 00 • Fax : +33 1 69 10 21 01 E-mail : infos@westermo.fr

Subsidiaries

Westermo ED-20 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual