Helmholz REX 100 WAN User manual

Quick Start Guide REX 100 WAN | WiFi
en
FW 1.5.0
www.helmholz.com
Version
2

Quick Start Guide REX 100 WAN | WiFi
2
Content
1. Introduction 3
2. Preparing the REX 100 unit 3
2.1 REX 100 WiFi 3
2.2 REX 100 WAN 3
2.3 Connection 3
2.4 Optional wiring of IN1 and IN2 3
3. Creating a REX 100 conguration in the myREX24 portal 4
3.1 Registration 4
3.2 Log in to the myREX24 portal 4
3.3 Creating a router conguration 5
4. Router conguration transfer options 7
4.1 Transferring the conguration using a USB ash drive 8
4.2 Conguration Transfer Manager (CTM) 9
4.3 Transferring the conguration using a local LAN connection 14
5. Establishing a VPN connection to your REX 100 15
5.1 Establishing a VPN connection and transferring IP packages 15
5.2 Tips and tricks 15
6. Remotely servicing an Ethernet PLC 16
7. Description of LEDs and buttons 18
7.1 LED description 18
7.2 Button description 18
8. Restoring the REX 100 router to its default settings 18
9. Load conguration/rmware update from USB stick 18
10. Technical specications 19
10.1 UL 20

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2. Preparing the REX 100 unit
2.1 REX 100 WiFi
Connect a WiFi-compatible antenna and ensure that a radio connection to a WLAN
access point (e.g. DSL modem) is possible.
(Antennas are available separately as accessories)
2.2 REX 100 WAN
Connect the WAN port of the REX 100 (P1 WAN) to the network or DSL modem
being used to establish an Internet connection.
1. Introduction
Before getting started:
For commissioning please use the latest version (as of v3) of the dial-up software
“shDIALUP”.
Write down the serial number and MAC address of your REX router before installing the
router in your system. You will need the serial number in order to congure the device!
The REX 100 is an industrial router designed to be installed on DIN rails and is suit-
able for worldwide remote access to IP-enabled devices (PLCs, HMIs, IP cameras, etc.)
This Quick Start Guide goes over the basic settings in the myREX24 portal and shows
how to transfer the conguration made there to the REX 100 unit.
2.3 Connection
Now connect a supply voltage of 18–30 V DC to the provided connector for all
device variants.
There is also a connection for the functional earth (FE). The connection of a function-
al earth is recommended.
2.4 Optional wiring of IN1 and IN2
IN1: The establishing of the connection to the myREX24 server can, for example, be
activated by an externally installed switch.
IN2: When the alarm management in the device has been activated and congured,
e-mails, for example, can be sent through an externally installed button or relay
contact.
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WLAN Accesspoint
Ext.V DC
18...30 V
- + FE
PWR
RDY
CON
USR
FCN
USB
IN1 IN2
RST
P1 WAN P2 LAN P3 LAN P4 LAN
SN: 1234567890
Ext.V DC
18...30 V
- + FE
PWR
RDY
CON
USR
FCN
USB
IN1 IN2
ANT
RST
P1 LAN P2 LAN P3 LAN P4 LAN
SN: 1234567890
Ethernet
Ethernet
Ethernet

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3. Creating a REX 100 conguration in the myREX24
portal
REX 100 routers are fully congured using the myREX24 portal. A completed cong-
uration le can be transferred to the actual REX 100 unit in a variety of ways.
3.2 Log in to the myREX24 portal
Once you install and open the shDIALUP program, you can use your login data to
log in to the myREX24 portal.
Note: Your login name is composed of a user name preceding the @ character and the
name of your company.
Example: admin@helmholz
Other users can be created and administered after you log onto the myREX24 portal.
3.1 Registration
If you do not yet have a myREX24 account, you will rst have to visit www.myREX24.
net and register under “Request access.” Make sure to ll out all mandatory elds.
Once you submit the form, you will receive an e-mail containing your login data.
You can download the software necessary for establishing a connection with my-
REX24-Portal (shDIALUP and shCHECK), as well as other documents with supplemen-
tary example applications anytime from the download area under www.myREX24.
net and www.helmholz.com.

Quick Start Guide REX 100 WAN | WiFi 5
3.3 Creating a router con guration
The following information describes the con guration points required to establish
a VPN portal connection. For a more detailed description of the advanced functions
and con guration options available, please use the portal’s online help.
Note: You should always individualize your login information (user names/passwords).
All relevant explanations can be found in the online help.
Once a connection to the myREX24 portal is successfully established, a new browser
window with your myREX24.net online account will open. Create a new device in
the “Machines” menu.
Click the icon to get to the next submenu.
Note: The device name must start with a letter. Umlauts, special characters and spaces
are generally not permitted. In addition, every device name must be unique.
The description page for the device you just created will appear now. The entry of
location and contact information data is optional.
The “Change VPN Password”  eld requires no entry. The password is generated
automatically.
To make sure that the con guration is sent to the right device, you will need to enter
the REX 100 router's serial number. The purpose of the additional description  eld is
to make it possible to distinguish between several remote servicing units internally.
Open the “Network” tab without clicking "Save".

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All REX 100 routers come with a LAN-side IP address of 192.168.0.100/24 as a
default. Modify the IP address and the subnet mask in keeping with the specications
from the machinery network.
If you want to connect additional TCP/IP components to the REX 100 LAN interface
for remote servicing purposes, this IP address will also be the default gateway for the
connected devices (see page 16).
The input eld WiFi Settings is only displayed for the device versions with WiFi. The
WLAN-specic access data for an access point must be entered here. The responsible
network administrator should be able to provide you with this data.
Open the “Internet” tab without clicking “Save”.
Under "Connect to the server", select the actions with which this device should
connect to your myREX24 account.
When using static IP addresses, the customer specications for the subsequent router
location must be used for the gateway, DNS server, and VPN port.
Prior to dening a pre-selectable VPN port, clarify whether this is also open on the
system side at the customer location (also see the chapter 5.2 "Tips and Tricks", page
15).
You have now congured the basic settings and can click on "Save" to proceed to
transfer the conguration to the REX 100 unit using one of the options available in
the menu (see chapter 4, page 7).
In the event that the dialog for "Submit to Device" appears automatically, you can
cancel this dialog and call it up later when needed.
Note: The myREX24 portal’s online help provides information on the function of the
advanced settings. If you enable DHCP, make sure that the DHCP server does not assign
the WAN port an IP address that is already in use on the LAN side. IP addresses from two
different subnets must be assigned to every router's LAN and WAN ports.

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4. Router conguration transfer options
Once you have created a conguration, you can click the oppy disk icon in order to
select one of three transfer methods.
1* Download conguration to PC
Save the conguration le and then use a USB stick to transfer it to the REX 100 unit
(see chapter 4, page 8).
Choose this option if the REX 100 router cannot be reached through the local net-
work (LAN) or through
the Internet when it is rst being set up.
2* Transfer conguration to CTM
The conguration is downloaded from the myREX24 portal using the REX 100
router's Internet connection (CTM = Conguration Transfer Manager; see chapter
4.2, page 9).
This Internet transfer method will become the default conguration option as soon
as the REX 100 router has established a connection to the myREX24 portal. When the
REX 100 has a connection to the myREX24 portal, the CTM is automatically used for
all subsequent conguration changes.
3* Transfer conguration to device
The conguration is transferred via a local LAN connection of the computer on which
shDIALUP is running (see chapter 4.3, page 14).
You can use this option if the REX 100 router can be reached directly through the
local network (LAN).
1*
2*
3*

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3. Store the configuration file
1. Login via shDIALUP
2. Create/edit and download
the REX 100 configuration
4. Transfer the configuration
4.1 Transferring the conguration using a USB ash drive
Use the USB-based parameter conguration method if the REX 100 router cannot be
reached either through the local network (LAN) or through the Internet.
In the myREX24 portal, go to the "Device Administration" page and select the
"Download to PC" option.
Once the le has been stored on the local computer, carry out the steps as described
in chapter 9 "Load conguration/rmware update from USB stick" on page 18.

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Cyclic check whenever
there is an Internet
connection
1. Login via shDIALUP
2. Create/edit the REX 100
configuration and deposit
it in the CTM
3. The configuration is
downloaded and activated
4.2 Conguration Transfer Manager (CTM)
The Conguration Transfer Manager makes it possible to transfer the conguration
to the REX 100 router once the router has established an Internet connection to the
myREX24 portal.
If the REX 100 unit has a connection to the myREX24 portal, it will check whether
there is a new conguration available for its serial number. If there is one, it will load
it automatically. This method is ideal for retroactive changes to the conguration.
Note:
-The CTM function is only supported as of version 3 of the dial-up software "shDIALUP".
- In order to be able to transfer the conguration, the Conguration Transfer Manager
needs an Internet connection established using a WAN/WLAN network. If you are
commissioning your REX 100 unit for the rst time, this can be commissioned directly
on the REX 100 router through the "First Start" webpage.
4.2.1 Establishing an Internet connection through the "First Start" website
If you have not yet congured your REX 100 router using one of the other congu-
ration methods (directly on the computer or using a USB ash drive), you can also
establish an Internet connection for the commissioning directly with the REX 100
router's web interface at the "First Start" website.
If the REX 100 can already set up an Internet connection, please continue to chapter
4.2.3 "Automatic download of the conguration" on page 13.
Commissioning via the "First Start" website presumes that the REX 100 can be ad-
dressed in the local network under its default IP address. REX 100 routers come with
a default IP address of 192.168.0.100 (subnet mask: 255.255.255.0).
In order to be able to reach the REX 100 router, the PC network adapter must also be
set to the IP address space and subnet of the router.
The device with serial number must be created in the myREX24 portal for successful
commissioning.

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Your IP address must lie within the address range "192.168.0.x". The subnet mask
must match the subnet mask used by the REX 100 unit (default: 255.255.255.0).
Note: Make sure that there are no address space conicts with any other network ports
(do not assign the same IP address more than once). If there are, you will not be able to
communicate with your REX 100 unit properly.
Open the properties of your LAN connection in order to set the PC network card to
the IP address range and the subnet of the router.
Windows¹ XP:
Start -> Settings -> Control panel -> Network connections.
Windows¹ 7:
Start -> Control panel -> Network and sharing center -> Change adapter settings
Open the Properties dialog box for the network connection that you want to use in
order to establish a connection to your REX 100 unit. To change your computer's IP
address, select "Internet Protocol (TCP/IP)" and click on the "Properties" button.
When your PC network card has accepted the new settings, start a browser (Firefox,
Chrome, Opera) and enter the IP address of the router in the address line (URL) as
follows: http://192.168.0.100.
Enter the following standard login data for the login to the REX 100 required now:
User name: helmholz
Password: router
The Internet connection path of the REX 100 is now dened uniquely at the "First
Start" website.
Note: Please note that the login data must be changed for your security after the router
is set up. To change them, go to the conguration menu on the myREX24 portal.

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In the case of wired models, access to the Internet can only be established through
the "external router" on the system side. To this purpose, the WAN interface must be
connected with the customer server/DSL modem.
In the case of WLAN devices, the registration data of the access point should be at
the ready.
If you select "DHCP," no IP address adjustments need to be carried out. "DHCP" is the
usual setting for WLAN participants.
It may be necessary to approve the MAC address of the REX device in the higher
level DSL modem or the rewall. If it should not be possible to establish a connec-
tion, please ask your network administrator whether a MAC address lter has been
activated.
REX 100 WAN
The values for the statically set WAN port are established by the responsible network
administrator. The settings for access through proxy servers are also are also stored in
this input screen as needed.

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The default portal server does not have to be changed. The code for the session key
is optional and does not have to be entered for initial commissioning.
As soon as all settings have been transferred and saved in the REX 100 router, the
router will establish an Internet connection.
REX 100 WiFi
The access data for the WLAN-specic settings are available to the responsible net-
work administrator. The settings for access through proxy servers are also stored in
this input screen as needed.

Quick Start Guide REX 100 WAN | WiFi 13
4.2.3 Automatic con guration download
If the REX 100 is able to establish an Internet connection, the router will connect
to the myREX24 portal and verify itself using its serial number. Once a connection
is successfully established, the "CON" LED on the router will start  ashing (see LED
description, chapter 7, page 18).
If a con guration  le is available on the portal server, it will be automatically loaded
onto the device and enabled.
4.2.2 REX 100 Quick Start status page
The status page on the REX 100 router's web interface will show the router's connec-
tion status and active con guration data.
To get more information on each step of the router connection, click on the Info
icon in the status  elds.
You can use the status page to trigger test functions or to manually make the router
obtain its con guration using the CTM.
4.2.4. Change con guration with Con guration Transfer Manager (CTM)
If the REX 100 router has already gotten a con guration  le, you will be able to
transfer any new con guration changes to the router using the CTM. If the router
has already been con gured using the CTM and you click on "Save" in the "Device
Administration" page after making changes to a con guration, the "Prepare for CTM"
dialog box will appear.
Alternatively, the transfer of the con guration to the Device Administration of the
myREX24 portal can also be triggered manually via the diskette symbol. If there is a
con guration ready to be transferred using the CTM, the
myREX24 portal can also be triggered manually via the diskette symbol. If there is a
icon will be shown on
the “Device Administration” screen.
Note: In order to establish a VPN connection with the REX 100, please read Chapter 5,
page 15.

Quick Start Guide REX 100 WAN | WiFi14
4.3 Transferring the con guration using a local LAN connection
LAN
1. Login via shDIALUP
3. Search for the device on the LAN network
4. Transfer the configuration
2. Create/edit and download
the REX 100 configuration
LAN
In order to be able to transfer the con guration through the LAN network, it must be
possible to reach the REX 100 unit (the one being con gured) in the same network
in which the computer with the shDIALUP software is also found.
-Connect your computer’s LAN port (LAN card) to one of the REX 100 unit’s LAN
ports. Make sure to use a standard Cat5 patch cable to establish the direct connec-
tion between your computer and the router.
-In the myREX24 portal (shDIALUP) in Device Administration, select the option
"Transfer con guration to the device".
After you have selected the corresponding PC-LAN network card in the device search
menu, the search for locally connected REX routers is carried out automatically in the
following dialogue.
The transfer can be started when the device with the corresponding serial number is
found. The REX 100 uses the new con guration following a restart.

Quick Start Guide REX 100 WAN | WiFi 15
5. Establishing a VPN connection to your REX 100
Note: In order for the following steps to work, the REX router must have already been
con gured.
5.1 Establishing a VPN connection and transferring IP packages
After you log in successfully with shDIALUP, your online account will be opened.
Logged-in REX routers will be indicated with a green circle.
If you now want to connect to a REX router, you can click on the "QuickConnect"
button to establish a connection to your system.
In the "Connect Status"  eld, you are shown the REX "LAN IP" address on the system
side (important, for example, for the "Ethernet interface properties", see chapter 6,
page 16).
Once a connection to the REX 100 has been established, all the IP packets that are
valid for the LAN network on the system side will be forwarded.
To terminate the remote access connection, click on the "Disconnect" button.
The "Status Legend" provides more information on additional "statuses."
5.2 Tips and tricks
-If the connection to the myREX24 portal does not work on the  rst try, please
install our "shCHECK" testing tool on a PC. This free program will check whether
the ports needed to successfully establish a connection to the myREX24 portal are
open. This test can be carried out both in the network from which a REX router
is to create a connection to the Internet and from the Internet PC on which the
shDIALUP dial-up software has been installed.
-In order to be able to establish a connection to the myREX24 server with shDIALUP,
at least one of the TCP ports (80, 1194, or 443) required for the VPN tunnel must
be open.
-The required outbound TPC address is 5.39.123.5
-Alternatively, you can also view the status of your machines with a direct invoca-
tion from your browser: https://vpn2.myrex24.net
Please use your shDIALUP access data to register. Following successful registration,
device con gurations can be adapted as needed and made available on the CTM.
WEB2go sessions can also be opened where available.
-If you would like to use the function for the automatic sending of e-mail of the REX,
the SMTP port 25 may not be blocked.

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In order to be able to access an Ethernet PLC through a VPN connection, the "Use
router" option must be enabled and correctly lled out in the PLC for the Ethernet
port being used for remote servicing purposes.
The IP you need to enter under "Address" corresponds to the LAN IP address of the
REX 100.
Note: The IP address of the PLC must lie within the address range of the LAN interface
of the REX 100. If it should not be possible to activate the "Use router" option in your
project, or if you want to reach an Ethernet device for which you cannot enter a gateway
IP, please check the security settings in Device Administration of the myREX24 portal in
the "Settings" tab.
The SNAT function should be enabled under "General Firewall Settings" so that you will
be able to reach devices in which a gateway IP has not been entered. This function is
always enabled in myREX24 congurations.
Ext. V DC
18 ... 30 V
- + FG
PWR
RDY
CON
USR
FCN
USB
IN1 IN2
ANT
RST
P1 LAN P2 LAN P3 LAN P4 LAN
SN: 1234567890
6. Remotely servicing an Ethernet PLC
Note: The integrated 3 or 4-port switch is suitable for 100 Mbps and full duplex
operation and supports auto-crossover and auto-negotiation. No special PROFINET
functions that are required for use in systems with PROFINET conformance class B or C
are supported.
Please note that the P1 LAN interface is started delayed for technical reasons in the event
of a device reset in the case of REX 100 WiFi devices.

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In order to be able to reach the PLC through the VPN tunnel, you will have to select
the appropriate Open VPN adapter in the PG/PC interface. The virtual network con-
nection responsible for this is the TAP Windows¹ Adapter V9.
Note: You can use either crossover or standard Ethernet cables in order to connect PLCs
to the REX 100 unit.
The SIMATIC STEP 7² "Available stations" function is not supported by the software
when using VPN connections.
As soon as a VPN connection to the REX 100 unit has been established (see chapter
5, page 15), you can start working with the PLC from the project (e.g., transferring a
hardware project, monitoring variables, etc.).

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7. Description of LEDs and buttons
7.1 LED description
PWR Indicator light for the power supply
RDY Readiness indicator
(this LED must show a solid light after a max. of 110 s)
CON Off: There is no active Internet or VPN connection
Solid light: Internet connection active or possible, but VPN connection
inactive
Rapid ashing (3 Hz): The router is attempting to establish a VPN
connection
Flashing (1.5 Hz): VPN connection active
USR Solid light: When loading default settings, rmware les, or device
congurations
Flashing (1.5 Hz): A portal conguration was recognized on the USB
stick (see FCN button, point 7.2.)
Rapid ashing (3 Hz): A rmware le was recognized on the USB stick
(see FCN button, point 7.2.)
FCN 1. Function button used to manually establish a connection with the
portal server (see screenshot on page 6)
2. If the USR LED starts ashing, this means that you have ten seconds to
press this button in order to load data from an inserted USB stick.
RST Reset button for restarting the router
7.2 Button description
8. Restoring the REX 100 router to its default settings
In order to reset the REX 100 to the factory settings, the following steps are neces-
sary:
-Apply a supply voltage (or press "RST") until the "PWR" LED lights up
-Wait until the RDY LED ashes
-Press the FCN button for approx. 10 –15 seconds until the USR LED ashes orange
-After you release the "FCN" key, the REX 100 reboots and once again has the
factory settings
Important: The IP address of the REX 100 LAN interface is reset to 192.168.0.100/24.
9. Load conguration/rmware update from USB stick
Note: Ensure that either only the rmware le or only the conguration le is found
in the root directory of the USB stick. If you wish to update both the rmware and the
conguration, carry out the following steps for each le separately.
To provide the REX 100 with a conguration or perform a rmware update from a
USB stick, please carry out the following steps:
-The boot process of the device must be completed (PWR & RDY LEDs light up
continuously)
-Don't change the le name and save this in the root directory of a standard FAT-for-
matted USB stick
-Insert the USB stick into the USB interface of the REX 100
-Once the USR LED starts ashing, you will have ten seconds to press the FCN
button
-The voltage supply should not be interrupted during the procedure
-Once the USR LED lights up continuously, you can release the FCN button, at
which point the data will be loaded from the USB stick
-The process is complete once the PWR and RDY LEDs light up again permanently
Note: Once the conguration le has been successfully transferred, the le will auto-
matically be renamed “Xmyrex24.mbn", making it impossible to accidentally reuse it
a second time.

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10. Technical specications
WAN (700-875-WAN01) WiFi (700-875-WIF01)
Dimensions (D x W x H) 32 x 59 x 76 mm 35 x 59 x 76 mm
Weight Approx. 270 g Approx. 270 g
WLAN antenna connection — SMA plug (external thread)
WLAN standards — IEEE802.11b/g & 802.11n (1T1R mode), to 150 Mbps
WLAN specication —EU (2,412 GHz - 2,472 GHz, 1-13 channels)
USA (2,412 GHz-2,462 GHz, 1-11 channels)
WPA/WP2, 64/128/152 bit WEP, WPS
802.11b: 1,2,5.5,11 Mbps
802.11g: 6,9,12,18,24,36,48,54 Mbps
802.11n: (20 MHz) MCS0-7, up to 72 Mbps
802.11n: (40 MHz) MCS0-7, up to 150 Mbps
Number of inputs/switching point 2/24 V (DC), as per DIN EN 61131-2 Type 2 2/24 V (DC), as per DIN EN 61131-2 Type 2
Router functions Firewall, NAT/PAT, SMS wake-up Firewall, NAT/PAT, SMS wake-up
VPN OpenVPN OpenVPN
Interfaces 1x WAN 10/100 Mbps
3x LAN 10/100 Mbps
USB 2.0 Type A port
1x WLAN 802.11b/g/n
Four 10/100 Mbps LAN ports
USB 2.0 Type A port
Voltage DC 24 V (18 ... 30 VDC, SELV and limited energy circuit) DC 24 V (18 ... 30 VDC, SELV and limited energy circuit)
Current draw Max. 250 mA with DC 24 V Max. 250 mA with DC 24 V
Ambient temperature in operation -40 °C ... +75°C 0 – +60 °C
Transport and storage temperature -40 – +85 °C -40 – +60 °C
Humidity 0 to 95 %, non-condensing 0 to 95 %, non-condensing
Location of use Dry location Dry location
Protection rating IP20 IP20
Certications CE, UL CE, UL

Helmholz GmbH & Co. KG | Hannberger Weg 2 | 91091 Großenseebach | Germany | Phone [phone] | Fax [phone] | [email protected] | www.helmholz.com
Note
The contents of this Quick Start Guide have been checked by us so as to ensure that they match the hardware and software described. However, we assume no liability for any existing
differences, as these cannot be fully ruled out.
The information in this Quick Start Guide is, however, updated on a regular basis. When using your purchased products, please make sure to use the latest version of this Quick Start
Guide, which can be viewed and downloaded on the Internet at www.helmholz.com. Our customers are important to us. We are pleased to receive suggestions for improvement and
new impulses..
This product was created with OpenSource software. The license terms of the open source software used can be found in the download area of the product on www.helmholz.de. You
get a compilation of the used OpenSource software within the rst three years after the purchase of the product for a cost contribution of 30 € plus shipping costs as a DVD if you
send us an email.
1) Windows is a registered trademark of the Microsoft Corporation.
2) SIMATIC and STEP 7 are registered trademarks of Siemens AG.
10.1 UL
WAN (700-875-WAN01) WiFi (700-875-WIF01)
Pollution degree 2 2
Altitude Up to 2000 m Up to 2000 m
Temperature cable rating 87 °C 87 °C