Helmholz REX 100 3G User manual

Quick Start Guide REX 100 3G | LTE
Version
2en as of FW 1.5.0
www.helmholz.com

Quick Start Guide REX 100 3G | LTE
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Content
1. Introduction 3
2. Preparing the REX 100 unit 3
2.1 Connection 3
2.2 Optional wiring of IN1 and IN2 3
2.3 Antenna connections 4
3. Creating a REX 100 conguration in the myREX24 portal 5
3.1 Registration 5
3.2 Log in to the myREX24 portal 5
3.3 Creating a router conguration 6
4. Router conguration transfer options 8
4.1 Transferring the conguration using a USB ash drive 9
4.2 Conguration Transfer Manager (CTM) 10
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 data 19
10.1 UL 20

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2. Preparing the REX 100 unit
Access to a GSM network requires a Standard SIM card of a provider: This is required
for purposes of identication for the network operator. The insert is found on the
housing side. The insert is unlocked by pressing the recessed yellow button next to
the card reader and can be removed.
2.1 Connection
Now connect a supply voltage of 10–30 V DC to the provided connector for all
device variants.
There is also a connection for the functional ground (FG). The connection of a func-
tional ground is recommended.
1. Introduction
Before getting started:
Please use the most current version (as of v3) of the dual-up software "shDIALUP" for
the commissioning.
Write down the serial number for your REX 100 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 use the portal to create a conguration and transfer it to your REX 100 unit.
2.2 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.
SIM card reader
Standard SIM card
Release button

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2.3 Antenna connections
Please note prior to installation that the antenna(s) must be positioned within the
reception range of an adequate GSM signal. These may not be installed, for example,
in metal housings. Please also observe the technical data sheets or instructions of the
antenna manufacturer.
2.3.1 REX 100 3G (UMTS)
The antenna required for radio reception is screwed onto the SMA socket "ANT".
2.3.2 REX 100 LTE (4G)
For general radio reception, at least one antenna must be screwed onto the SMA
socket "MAIN" (ANT 2).
An optional connection for a second reception antenna is available on the LTE router
at the SMA socket "Rx" (ANT1) for improving the data throughput. This functionality
is called antenna diversity in the "WCDMA mode" and Downlink-MIMO in the "LTE
mode".
The second receiver antenna should not be located in the immediate vicinity of the
main antenna. In order to improve the diversity gain and reduce other reciprocal
interactions (interference effects), the two antennas should be (taking the space
available for usage into account) installed with the greatest possible distance be-
tween them.
For the same reason, the second antenna should be mounted cross-polarized (with
reference to the main antenna, 90° to one another).

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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-
guration 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
myREX24-Portal (shDIALUP and shCHECK), as well as other documents with supple-
mentary example applications anytime from the download area under
www.myREX24.net and www.helmholz.com.

Quick Start Guide REX 100 3G |LTE6
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).
You can  nd all relevant explanations 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.
If you have the telephone number of the SIM card available, you can enter this in
the appropriate  eld so that the myREX24 portal can control the REX 100 with SMS
messages.
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).
Open the “Internet” tab without clicking "Save".
Under "Connect to the server", select the actions with which this device should con-
nect to your myREX24 account.
In the case of "Modem settings", all information concerning the access point (Access
Point Name) of the card provider must be provided and the SIM PIN entered.
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 8).
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.

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1*
2*
3*
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 9).
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 10).
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).

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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 conguration method if the REX 100 router can be reached nei-
ther through the local network (LAN) nor 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 a conguration
to a 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 SIM card. 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gura-
tion 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
4.2.4 "Automatic download of the conguration" on page 12.
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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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
Note: For your own security, you must change the login data after setting up your
router. To change them, go to the conguration menu on the myREX24 portal.
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.
Your IP address must fall within the “192.168.0.x” address range. 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.
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.
Now enter the following default login data to successfully log in to the REX 100 unit:
User name: helmholz
Password: router
The Internet connection path of the REX 100 is now dened uniquely at the "First
Start" website.

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For the modem settings you will only need to provide the access data of the carrier
(APN) and the SIM card ID number (SIM PIN).
4.2.3 Conclude "First Start" steps
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 when setting up the router.
As soon as all settings have been transferred and saved in the REX 100 router, the
router will establish an Internet connection.
4.2.4 Automatic conguration download
If the REX 100 router is able to establish an Internet connection, it 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.

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4.2.5 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.
4.2.6. 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, you can also start transferring the con guration manually from the
“Device Administration” of the myREX24 portal by clicking the  oppy disk icon. If
there is a con guration ready to be transferred using the CTM, the
“Device Administration” of the myREX24 portal by clicking the  oppy disk icon. If
icon will be
shown in “Device Administration”.
Note: In order to establish a VPN connection with the REX 100, please read Chapter 5,
page 15.

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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) on the same network
on which the computer with the shDIALUP program is 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 will start if a device with the right serial number is found. Once the
transfer is complete, the REX 100 router will start using the new con guration after
being restarted.

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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 an REX router, you can click on the "QuickCon-
nect" 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 "PG/PC interface", 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 in the  eld 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 if available.
-In the event that the provider interrupts the connection of your REX 100 router dur-
ing GSM remote maintenance, this may have taken place for the following reasons,
among others: incorrect user name/password, ports blocked by the provider or no
more credit for prepaid SIM cards.

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6. Remotely servicing an Ethernet PLC
Note: The integrated 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 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 REX 100 unit's LAN IP
address.
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.

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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 to connect PLCs to the
REX 100 unit.
The SIMATIC STEP 7² "Available Nodes" 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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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
necessary:
-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 fac-
tory settings
Important: The IP address of the REX 100 LAN interface is reset to 192.168.0.100/24.
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 con-
nection
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 2.)
Rapid ashing (3 Hz): A rmware le was recognized on the USB stick
(see FCN button, point 2.)
FCN 1. Function button used to manually establish a connection with the
portal server (see screenshot on page 7)
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
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 individually.
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-
formatted 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 but-
ton.
-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.
7.2 Button description

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19
10. Technical data
3G (700-875-UMT01) LTE (700-875-LTE01)
Dimensions (D x W x H) 35 x 59 x 75 mm 35 x 59 x 75 mm
Weight Approx. 270 g Approx. 270 g
GSM modem Quad-band GPRS/EDGE data interface Multiband GSM/GPRS/WCDMA/LTE data interface
Antenna connection SMA connector (external thread) SMA connectors (external thread)
Type of SIM card Standard SIM, 1.8 V/3 V Standard SIM, 1.8 V/3 V
GSM frequency bands (MHz) GSM/GPRS/EDGE: 850, 900, 1800, 1900 GSM 900, DCS1800
UMTS/HSPA frequency bands (MHz) UMTS/HSPA: 800/850, 900, AWS 1700, 1900, 2100 class 1 B5(850), B8 (900), B1 (2100)
LTE frequency bands (MHz) —B20 (800), B3 (1800), B7 (2600)
Transmit power Class 1, E2, 3, 4 Class 1, E2, 3, 4
Data transfer rates HSPA+ (upload: 5.76 Mbps | download: 21.0 Mbps) HSPA+ (upload 5.76 Mbps | download 42.0 Mbps);
LTE (upload 50 Mbps | download 100 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 Four 10/100 Mbps LAN ports
USB 2.0 Type A port
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 -40 °C ... +75°C -40 °C ... +75°C
Transport and storage temperature -40 °C … +85 °C -40 °C … +85 °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] | inf[email protected] | www.helmholz.com
Note
Our products contain, among others, open source software. This software is subject to the applicable licensing conditions. We will send you the appropriate licensing conditions,
including a copy of the complete licensing text, together with the product. These are also available in our download area of the respective product under www.helmholz.com.
We also offer to send you or any third party the complete source code of the applicable open source software as a DVD upon request for a contribution towards costs of 10.00 Euro.
This offer is valid for a period of three years as of the delivery of the product.
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.
1) Windows is a registered trademark of the Microsoft Corporation.
2) SIMATIC and STEP 7 are registered trademarks of Siemens AG.
10.1 UL
3G (700-875-UMT01) LTE (700-875-LTE01)
Pollution degree 2 2
Altitude Up to 2000 m Up to 2000 m
Temperature cable rating 87 °C 87 °C