SSV RMG/941L User manual

Remote Maintenance Gateway
RMG/941(L,N)
with DNP/9535
First Steps
SSV Software Systems GmbH
Dünenweg 5
D-30419 Hannover
Phone: [phone]
Fax: [phone]
Emai : sa [email protected]
Document Revision: 1.0
Date: 2019-12-13

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CONTENT
1 INTRODUCTION ............................................................................................................... 3
1.1 Checklist ................................................................................................................................. 3
1.2 Conventions ........................................................................................................................... 3
2 SAFET GUIDELINES ..................................................................................................... 4
3 REQUIRED EQUIPMENT ................................................................................................. 5
4 SIM CARD ......................................................................................................................... 6
5 CONNECTIONS ................................................................................................................ 7
5.1 LTE/NB-IoT Antenna .............................................................................................................. 7
5.1 Ethernet Link .......................................................................................................................... 8
5.2 erial Port COM2 ................................................................................................................... 9
5.3 Power upply ....................................................................................................................... 10
6 OPERATION ................................................................................................................... 11
6.1 Booting the RMG/941 .......................................................................................................... 11
6.2 Accessing the V/WebUI .................................................................................................... 11
6.3 Using the V/WebUI .......................................................................................................... 12
6.4 Accessing the V/WebUI with DHCP enabled ................................................................... 13
6.5 RMG/941N: Checking NB-IoT Connection ........................................................................... 15
6.6 RMG/941L: LTE Modem Configuration ............................................................................... 16
6.7 RMG/941L: WAN Configuration .......................................................................................... 17
6.8 RMG/941L: Firewall Configuration ...................................................................................... 18
6.9 LAN1 Configuration .............................................................................................................. 19
6.10 Access via Telnet .................................................................................................................. 20
6.11 Access via FTP ...................................................................................................................... 21
6.12 erial Console via COM1 ( ervice Port) ............................................................................... 23
7 TECHNICAL DATA ......................................................................................................... 24
8 PINOUT SCREW TERMINALS ....................................................................................... 24
9 HELPFUL LITERATURE ................................................................................................ 25
CONTACT ............................................................................................................................. 25
DOCUMENT HISTOR ......................................................................................................... 25

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1 INTRODUCTION
This documentation gives you an overview about the initial operation and the first steps of
use with the RMG/941.
1.1 Checklist
ompare the content of your RMG/941(L,N) start-up package with the checklist below.
If any item is missing or appears to be damaged, please contact SSV!
 Remote Maintenance Gateway RMG/941(L,N)
 1x LTE/NB-IoT antenna (only for RMG/941L and RMG/941N)
 Adapter cable with power and RS232 connector
 Plug-in power supply
 Screwdriver
IMPORTANT!
You will need further equipment to operate the RMG/941. Please refer to chapter 3.
1.2 Conventions
Convention
sage
bold
Important terms
monospace
Filenames, Pathnames, program code, command
lines
Table 1: Conventions used in this document

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2 SAFETY GUIDELINES
Please read the ollowing sa ety guidelines care ully! In case o property or personal
damage by not paying attention to this manual and/or by incorrect handling, we do not
assume liability. In such cases any warranty claim expires.
• The power supply should be in immediate proximity to the device.
• The power supply must provide a stable output voltage between 11 – 28 VD . The out-
put power should be at least 2.5 W.
• Please pay attention that the power cord or other cables are not squeezed or damaged
in any way when you set up the device.
• Do NOT turn on the power supply while connecting any cables, especially the power
cables. This could cause damaged device components! First connect the cables and
THEN turn the power supply on.
• The installation of the device should be done only by qualified personnel.
• Discharge yourself electrostatic before you work with the device, e.g. by touching a
heater of metal, to avoid damages.
• Stay grounded while working with the device to avoid damage through electrostatic
discharge.
• The case of the device should be opened only by qualified personnel.

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3 REQUIRED EQUIPMENT
To operate the RMG/941 the following hardware is required:
• one Ethernet cross-over cable or two Ethernet patch cables and a switch.
To operate the RMG/941L the following hardware is required:
• a valid SIM card with an appropriate mobile tariff. Please refer to chapter 4 to see how
the SIM card is inserted.
The RMG/941N comes with a preinstalled SIM card for NB-IoT.
To configure the RMG/941(L,N) a computer with the following features is required:
• Windows 7 or higher
• Web browser (e.g. Firefox, hrome)
• Telnet/SSH client (e.g. TeraTerm)
• FTP client (e.g. FileZilla)
• 10/100 Mbps Ethernet network controller and T P/IP configuration
• D-ROM drive

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4 SIM CARD
The internal SIM card of the RMG/941L and RMG/941N can be changed through the slot on
the backside.
To remove the SIM card just push it gently with a screw driver until you hear a soft "click".
The SIM card is ejected a few millimeters and can be pulled out easily.
Figure 1: Removing the SIM card
To insert the SIM card just push it by hand as deep as possible into the slot.
Please note:
Pay attention to the correct orientation of the SIM card like shown in ig. 2!
Then use a screw driver to push it gently further into the slot until you here a soft "click".
Figure 2: Inserting the SIM card

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5 CONNECTIONS
For a quick and easy start with the RMG/941 there are a few cable connections necessary.
The following chapters describe how these connections have to be made.
5.1 LTE/NB-IoT Antenna
onnect the LTE/NB-IoT antenna with the RMG/941(L,N) like shown in ig. 3 and place it
where the LTE/NB-IoT signal strength is high.
Figure 3: Connecting the LTE/NB-IoT antenna

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5.1 Ethernet Link
The Ethernet link between the P and LAN1 of the RMG/941 can be made on two ways:
• Direct with an Ethernet cross-over cable like shown in ig. 4.
• With two standard Ethernet patch cables over a hub or switch like shown in ig. 5.
Figure 4: Ethernet link with cross-over cable
Please note:
For the Ethernet connection in ig. 4 it is required to use a cross-over cable. Do not
use an ordinary patch cable. Both types of cables are in most cases visual indistin-
guishable. But the internal wiring is fully different. Mixing up these types of cables
leads to LAN errors. Hence pay attention to the label of the cable or packing.
Figure 5: Ethernet link with hub or switch
The IP address of the LAN1 interface is ex-factory set to 192.168.0.126.

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5.2 Serial Port CO 2
You can create an RS485 serial link on port OM2 of the RMG/941.
Figure 6: Serial link on COM2
Terminal
Signal
A1
OM
2
Serial Port
:
RS485 RX /TX+
A2
OM
2
Serial Port
:
RS485 RX /TX
-
B
4
Signal
Ground
Table 2: Screw terminals COM2
Please note:
The RS485 (officially called TIA/EIA-485-A) connection between your RMG/941 and
the field devices needs termination resistors on both ends for proper operation. The
RMG/941 does not o er internal termination resistors. Please make sure, that the
RS485 cable connection is equipped with external termination resistors.

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5.3 Power Supply
The RMG/941 needs a supply voltage of 11 – 28 VD to work.
onnect the cables of an appropriate power supply to provide the system with the neces-
sary power like shown in ig. 7.
Figure 7: Power supply or the RMG/941
Terminal
Sign
al
A3
Vin (11 .. 28 VD )
A4
GNDin
Table 3: Screw terminal power
CAUTION!
Providing the RMG/941 with a higher voltage than the regular 11 – 28 VD could cause
damaged device components!
Do NOT turn on the power supply while connecting it with the RMG/941. This could cause
damaged device components! First connect the power supply and THEN turn it on.

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6 OPERATION
6.1 Booting the R G/941
Just power up the RMG/941 and the boot process starts immediately. The RMG/941 boots
an embedded Linux out of its Flash memory. This may take up to one minute.
6.2 Accessing the SSV/WebUI
To open the login page of the SSV/WebUI enter the ex-factory IP address and port number
of LAN1 of the RMG/941 manually in a web browser:
https://192.168.0.126:7777
Enter your username and password and click on [Login].
Figure 8: Login page o the SSV/WebUI

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6.3 Using the SSV/WebUI
The SSV/WebUI allows to view log files and to configure the system settings of the
RMG/941 with a web browser, e.g. enabling and disabling services like Telnet or changing
the IP address.
Please note:
To keep changed settings after a reboot or an interruption of the power supply they
must be persisted. Therefore choose from the menu System > System management
(fig. 9). The section Temporary con iguration shows which settings are not persisted
yet. To save the settings permanently just click on the button [Persist].
I there are any unsaved settings you can also always see on the right side o the
SSV/WebUI’s header under unsaved changes.
Figure 9: System management within the SSV/WebUI

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6.4 Accessing the SSV/WebUI with DHCP enabled
If the automatic IP address configuration of LAN1 via DH P is enabled, you have to check
the assigned IP address, which is necessary to access the RMG/941 via a Telnet client or a
web browser.
Therefore open in Windows Control Panel > Network and Internet > View network com-
puters and devices. The RMG/941 should show up in this list.
Figure 10: Selecting the RMG/941
Just right-click on the RMG/941 to open the properties dialog, where you can see the cur-
rent IP address of the RMG/941 like shown in ig. 11.
A double-click on the RMG/941 opens the SSV/WebUI in a web browser.
Please note:
To access the SSV/WebUI, it is important to add the port number 7777 to the cur-
rent IP address of the RMG/941, e.g.: http://192.168.0.126:7777!

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Figure 11: The properties dialog shows the current IP address
Now you are able to access the RMG/941 via a Telnet client or a web browser.

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6.5 R G/941N: Checking NB-IoT Connection
The RMG/941N comes with a preinstalled NB-IoT SIM card with 500 MB free traffic volume.
To check if there is a connection with the NB-IoT mobile network choose from the menu
Network > Mobile.
Figure 12: Mobile network settings o the RMG/941N
In the section Modem con iguration the line Status should display CONNECTED.
You can also check the signal strength by clicking on the button [Check signal].
Please note:
If the connection to the NB-IoT network fails, the modem tries to connect with the
regular mobile network with 2G!

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6.6 R G/941L: LTE odem Configuration
The RMG/941L does NOT come with a SIM card. To connect with the LTE mobile network
you have to insert a valid SIM card first. Chapter 4 shows how to insert/change a SIM card.
To configure the LTE modem settings choose from the menu Network > Mobile.
Figure 13: Mobile network settings
1. In the section Modem con iguration enable the checkbox.
2. If the provider is not recognized automatically disable the checkbox in the section ISP
settings and choose your provider manually.
3. Enter the PIN of the SIM card.
4. In the section Connection settings choose On System start.
5. lick on [Apply].
In the section Network con iguration you can enter a DNS server if needed.
In the section Modem con iguration the line Status should display CONNECTED after the
successful configuration.
You can also check the signal strength by clicking on the button [Check signal].

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6.7 R G/941L: WAN Configuration
To operate the RMG/941L as an LTE router the WAN (Wide Area Network) settings need to
be configured.
hoose from the menu Network > WAN.
Figure 14: WAN settings
1. In the section WAN con iguration choose Mobile.
2. In the section Internet click on [Check] to test the Internet connection.
3. lick on [Apply].
Please note:
I the RMG/941L operates as an LTE router it is highly recommended to enable the
irewall (please re er to chapter 6.8)!

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6.8 R G/941L: Firewall Configuration
I the RMG/941L operates as an LTE router it is highly recommended to enable the ire-
wall!
hoose from the menu Services > Firewall and NAT.
Figure 15: Firewall and NAT settings
1. In the section Firewall con iguration enable the checkbox.
2. In the section Forwarding with IP-Masquerading and NAT enable the checkbox.
3. lick on [Apply].

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6.9 LAN1 Configuration
The IP address of the LAN1 interface is ex-factory set to 192.168.0.126.
To configure the LAN1 settings choose from the menu Network > LAN1.
Figure 16: LAN1 settings
To enable the automatic IP address assignment via DH P follow these steps:
1. In the section IP address con iguration enable the radio button automatically.
2. lick on [Apply].
Please note:
After DH P was enabled, it is necessary to re-log into the SSV/WebUI with the new
assigned IP address of LAN1. Please refer to chapter 6.4 to find out the current IP
address.

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6.10 Access via Telnet
Please note:
The Telnet server must be enabled via the SSV/WebUI. Therefore choose from the
menu Services > General, enable the checkbox in the line Telnet server and click on
[Apply].
To access the RMG/941 via Telnet open a Telnet client program (like TeraTerm) on your
host P and enter the current IP address of the RMG/941 to activate a Telnet session.
In the upcoming Telnet window you can enter your login data.
Figure 17: Accessing the RMG/941 via Telnet client