WM Systems M2M Router PRO 4 User manual

User Manual
M2M Industrial Router 2 DCU MBUS
___________________________________________________
Rev: 1.00
2023-02-10

Document specifications
This document was completed for the M2M Industrial Router 2 DCU MBUS® device
and contains the hardware specification, with the most important information and
software settings of the device.
Document category:
User Manual
Document subject:
M2M Industrial Router 2 DCU MBUS
®
Author:
WM Systems LLc
Document version No.:
REV 1.00
Number of pages:
86
Hardware Identifier No.:
BE0109D_ROUTER_9X60_7070_AXP
Firmware version:
202302061 or later
OpenWRT Linux Kernel version:
5.10.154
Document status:
Final
Last modified:
10 February, 2023
Approval date:
10 February, 2023

Table of contents
CHAPTER 1. Product information .......................................................................................... 5
CHAPTER 2. Technical data.................................................................................................... 5
2.1 Power voltage / Current ratings .............................................................................................................................................. 7
2.2 Cellular modules (order options) .......................................................................................................................................... 7
CHAPTER 3. Device exterior design and appearance ....................................................... 9
3.1 Safety cautions .................................................................................................................................................................................... 10
3.2 Mounting, fastening ....................................................................................................................................................................... 12
3.3 Antenna................................................................................................................................................................................................... 13
3.4 Further accessories......................................................................................................................................................................... 13
CHAPTER 4. Software system................................................................................................ 15
4.1 Operation system.............................................................................................................................................................................. 15
4.2 LAN block feature ............................................................................................................................................................................ 15
4.3 Device Manager platform........................................................................................................................................................... 15
4.4 TLS protocol communication.................................................................................................................................................. 16
4.5 Accessing the device (via SSH connection).................................................................................................................... 16
CHAPTER 5. Starting the device ........................................................................................... 17
5.1 Connecting the DCU....................................................................................................................................................................... 17
5.2 First start................................................................................................................................................................................................. 18
5.3 Web user interface of the router .......................................................................................................................................... 19
5.4 Access via SSH connection........................................................................................................................................................ 21
CHAPTER 6. Web Administration user interface ............................................................... 23
6.1 Main page (Dashboard)................................................................................................................................................................. 23
6.2 Menu ......................................................................................................................................................................................................... 25
6.3 Status menu......................................................................................................................................................................................... 25
6.4 System menu...................................................................................................................................................................................... 25
6.5 Services menu .................................................................................................................................................................................... 26
6.6 Network menu................................................................................................................................................................................... 27
6.7 VPN menu............................................................................................................................................................................................ 27
CHAPTER 7. Important notes................................................................................................. 28
CHAPTER 8. Network configuration of the device ........................................................... 30
8.1 Interface settings .............................................................................................................................................................................. 30
8.2 Cellular / Mobile internet settings ....................................................................................................................................... 31
8.3 Ethernet (LAN) settings ............................................................................................................................................................... 33
8.4 DHCP, DNS settings....................................................................................................................................................................... 35
8.5 DNS settings........................................................................................................................................................................................ 37
8.6 Defining the route rules .............................................................................................................................................................. 38
8.7 Firewall settings ................................................................................................................................................................................ 38

8.8 Port Forward settings ................................................................................................................................................................... 43
8.9 IP routing, NAT settings............................................................................................................................................................... 45
8.10 Dynamic DNS settings ............................................................................................................................................................... 46
CHAPTER 9. Special settings ................................................................................................. 47
9.1 Ping an IP address............................................................................................................................................................................ 47
9.2 Network Time Service (NTP) ..................................................................................................................................................... 48
9.3 TFTP settings....................................................................................................................................................................................... 48
9.4 LED configuration ........................................................................................................................................................................... 49
9.5 Remote access (SSH) ..................................................................................................................................................................... 51
9.6 UCI usage from the command line ..................................................................................................................................... 53
9.7 IPSEC settings .................................................................................................................................................................................... 53
9.8 VPN client (OpenVPN) configuration................................................................................................................................. 54
9.9 RS485 / Modbus settings (Ser2net)...................................................................................................................................... 58
9.10 MBus settings................................................................................................................................................................................... 63
9.11 Voice call settings............................................................................................................................................................................ 63
9.12 Run commands remotely (SMS config settings) ...................................................................................................... 63
CHAPTER 10. Software refresh and DCU maintenance ..................................................... 66
10.1 Firmware refresh ............................................................................................................................................................................. 66
10.2 Installing applications ................................................................................................................................................................. 67
10.3 Restarting the device ................................................................................................................................................................. 70
10.4 Shutdown / halt of the devuce ............................................................................................................................................. 71
10.5 Reset the device.............................................................................................................................................................................. 71
10.6 Password change........................................................................................................................................................................... 72
10.7 Backup and restore of settings............................................................................................................................................. 72
10.8 Clone configuration...................................................................................................................................................................... 75
10.9 Start or stop a system service ................................................................................................................................................ 76
10.10 Log.......................................................................................................................................................................................................... 76
CHAPTER 11. Troubleshooting................................................................................................ 79
CHAPTER 12. Support availability ......................................................................................... 85
12.1 Contact the support line............................................................................................................................................................. 85
12.2 Product support .............................................................................................................................................................................. 85
CHAPTER 13. Legal notice ...................................................................................................... 86

Chapter 1. Product information
The robust DCU device features an Ethernet port, an RS485 port, an MBus port, a
cellular module, and compact industrial design.
It is currently available with LTE Cat.1 or LTE Cat.M/Cat.NB modules that provide
enhanced coverage.
The Data Concentrator has undergone a complete redesign, providing improved
processing speed with an eMMC chip for secure boot and encrypted data storage.
It also features an OTP-enabled memory chip, an option for a Chip SIM (MFF2), and
supercapacitor protection along with the latest security protocols and features for
maximum security.
Reliable and Rugged Communication Device for Smart Grid and Industrial
Applications.
This Data Concentrator is designed for use in various smart grid and industrial M2M /
IoT applications, including Automated Metering Infrastructure (AMI) and industrial
automation projects.
The DCU is capable of reading Modbus registers from connected PLCs and data from
up to 30 MBus meters. It transmits valuable data to the data center through the MQTT
protocol, providing a cost-effective solution for industrial automation and smart
metering connectivity.
Ports / Interfaces
The device offers the following ports: Ethernet, RS485, Mbus, and micro-USB port (for
configuration).
System Software
The DCU utilizes the open-source OpenWRT®operating system, allowing clients to
compile their own applications to the firmware. It features a user-friendly web admin
interface for easy access and configuration.
The product can also be managed with the state-of-the-art Device Manager®platform
(order option), providing clients with the ability to perform OTA firmware updates and
mass deployments more efficiently.

Secure storage / Secure Boot
The device has a built-in eMMC chip (4 or 8 GByte storage –by order option) for Secure
Boot process / encrypted storage of all customer data. It uses an OTP-enabled
memory chip.
The device is secured with Secure Boot system and secure storage mechanism. It uses
an SHA-256 encrypted file system (with RSA and SHA-256 assigments).
The device operates with multiple encrypted partitions and file systems, which
ensures the security of the device.
Security features
The device uses Secure Boot system with Secure Key Storage features (on encrypted
eMMC memory chip).
The DCU continuously monitoring the operation parameters (QoS, module operation,
vital signals, etc.).
It has detection of network interface connections / disconnections with an alarm
event sending to the Device Manager®management platform.
The software of the device applies unique passwords, firewall and it has support for
IPSec tunneling.
Management
Remote management of routers, DCUs using Device Manager®software (order
option) via a secure TLS v1.2 connection (by option) during the communication with
the router.
The DCU allows clients to do OTA firmware updates and mass deployments
significantly faster via Device Manager®platform.
Last GASP –notification of power outage
The device has built-in supercapacitor parts with LastGASP feature (in case of a power
outage, the router is operating further, while an immediate notification will be sent
from the event to the Device Manager®software).

Chapter 2. Technical data
2.1 Power voltage / Current ratings
•Power Voltage / Ratings: • 12V DC, 1A power supply (9-32VDC) –powered via
Microfit 4-pins power input connection (from external 12V DC power adapter)
•Current / Consumption: Average: 200mA - 260mA, 12VDC (according to
module version) / 2.4W –3.1W, 12VDC
For the connection it is recommended to use the DC microfit connection power
adapter or a 12V DC supply according to the pinout which can be seen on the next
figure.
2.2 Cellular modules (order options)
•LTE Cat.1 / 450 MHz module with 2G „fallback”
Module:
oSIMCOM A7676E
Bands:
oLTE Cat.1 / 450MHz: B1/B3/B8/B20/B31/B72
oGSM/EGPRS: 900/1800MHz
•LTE Cat.M / Cat.NB / 450 MHz module with 2G „fallback”
Module:
oSIMCOM SIM 7070E

Bands:
oLTE Cat.M / 450MHz: B1/B2/B3/B4/B5/B8/B12/B13/B14/B18/B19/B20/B25/
B26/B27/B28/B31/B66/B72/B85
oLTE Cat.NB: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B28/B31/
B66/B85
oGSM/EGPRS: 850/900/1800/1900MHz

Chapter 3. Device exterior design and appearance
Industrial DCU, assembled in aluminum casing
with interface connectors / ports
* SIM insertion: push the APN-activated SIM into the SIM tray (2) - the SIM chip surface
must be look to top and the cutted edge of the SIM must be look to the DCU –then
push the SIM until it will be fixed and closed (you will hear a soft click sound).
1 –POWER (9-32V DC): Microfit 4-pin power connector (for DC power/adapter)
2 –*SIM card slot (2FF)
3 –micro-USB connector (for configuration)
4 –Reset button (hole)
5 –Ethernet (RJ45, 10/100 Mbit)
6 –Antenna connector (SMA-M, 50 Ohm)
7 –3 Operation LEDs
8 –RS485 / Modbus connector (3-pin terminal block)
9 –Mbus connector (2-pin terminal block)
3
1
2
4
5
6
7

Industrial DCU MBUS with Mbus and RS485 / Modbus connectors
Industrial DCU MBUS, assembled in aluminum casing,
attachable to 35mm DIN rail (with an adapter)
8
9

3.1 Safety cautions
The device must be used and operated according to the user manual provided.
Only a responsible and skilled person with adequate experience and knowledge
in wiring and installing a DCU device, as instructed by the service team, should
carry out the installation.
It is forbidden for the user to touch or alter the wiring or installation. The device
enclosure should not be opened during operation or when connected to power, and
the device PCB should not be removed or modified. No modification or repair should
be made without the manufacturer's permission, as this will result in the loss of
product warranty.
CAUTION! Only certified experts or the manufacturer are authorized to open the
device enclosure.
The device uses 9-32V DC power supply within the enclosure, and the enclosure
should NOT be opened or the PCB touched.
DCU current and consumption
•Power voltage: 9..32 VDC
•Current average: 200mA, 12V DC
•Consumption: 1.9W (during 2G/3G communication), 3.1W (during LTE or
Cat.1 / LTE Cat.M communication)
The IP51 immunity protection will only be effective if the device is used under
normal conditions and with undamaged hardware in the provided enclosure /
chassis.
Any deliberate damage or malfunction of the device will result in the loss of
product warranty.
To ensure safety, the following guidelines should be followed:
■ Keep the chassis area clean and free of dust during and after installation.
■ Wear appropriate clothing to avoid loose clothing getting caught in the chassis.

■ Avoid actions that could cause a hazard to people or equipment.
Safety preucations for Electricity
■ Read all safety warnings before working on equipment powered by electricity.
■ Locate the emergency power-off switch for quick access in case of an electrical
accident.
■ Disconnect all power before installing or removing a chassis, working near power
supplies, or inserting a SIM card.
■ Look for potential hazards in your work area, such as moist floors, ungrounded
power cables, frayed cords, and missing safety grounds.
■ Never work alone if hazardous conditions exist.
■ Always verify that power is disconnected from a circuit before working on it.
■ Do not open the internal power supply enclosure of the DCU.
■ In case of an electrical accident, follow these steps:
■ Use caution to avoid becoming a victim.
■ Turn off power to the device.
■ If possible, send someone for medical aid. If not, assess the victim's condition
and call for help.
■ Determine if rescue breathing or external cardiac compressions are needed,
and take appropriate action.
Preventing Electrostatic Discharge Damage
■ Electrostatic discharge (ESD) can cause damage to equipment and impair electrical
circuitry.
■ Always follow ESD prevention procedures when removing and replacing modules:
■ Ensure that the DCU chassis is grounded.

■ Wear an ESD-preventive wrist strap and connect it to an unpainted surface of
the chassis frame to safely channel ESD voltages to ground.
■ If a wrist strap is not available, ground yourself by touching a metal part of the
chassis.
3.2 Mounting, fastening
The device's bopla aluminum enclosure can be fixed to a DIN-rail using the optional
AB800MKL fixation part, or mounted to a wall, placed in a server rack, or fixed in a
similar manner.
The device enclosure can be mounted using either the AB-MKL one-sided DIN-rail adapter (left)
or the AB800MKL adapter (right) on a wall or DIN-rail.
These accessories can be ordered - more information:
https://m2mserver.com/en/product/din-rail-mount-unit-two-sided/
https://m2mserver.com/en/product/din-rail-mount-unit-one-sided/
3.3 Antenna
Please be aware that the presence of metal parts in close
proximity, the metal material of the cabinet, and industrial
conditions such as the use of high power levels or
exposure to external radio frequency signals can cause
radio interference and result in weak wireless signals
during transmission or reception, as well as reduced
signal quality.

In these cases, we recommend testing the wireless
signal reception and quality. If necessary, you can
improve reception by using an external magnetic
mount antenna that is mounted outside of the
cabinet and placed on its surface.
3.4 Further accessories
The following accessories are not part of the product, these are order options.
Microfit power cable:
Type: min. 70 cm, OMYA type, 2 x 1 mm^2, halogen free, double insulated wires, min.
24 V DC voltage, wires are marked by colors and
blanked.
Connector type: 4-pins Microfit (2-pins are wired)
Feature: to provide 9..32V DC power supply
connecting for the DCU (12V DC 1A).
For the wiring and assuring the power supply you
should take note to the following figure.
More information:
https://m2mserver.com/en/product/microfit-psu-cable/

RS485 cable:
You should use the following cable type: 70 cm OMYA type, 3 x 0,75 mm^2, halogen-
free, double insulated wire pair, up to min. 24V DC breakdown voltage, colour signed
cabling, blanked on the cable end –for supporting the 24V DC power
voltage.
Type of connection: terminal block, 3-pin
Function: RS485 connection for external devices
Cabling must be done considering the next pinout (from left to right): GND, A, B.
Mbus cable:
You should use the following cable type: 70 cm OMYA type, 2 x 0,75 mm^2, halogen-
free, double insulated wire pair, up to min. 24V DC breakdown voltage, colour signed
cabling, blanked on the cable end –for supporting the 24V DC power
voltage.
Type of connection: terminal block, 2-pin
Function: Mbus connection for external devices (up to 30 slaves)
Cabling must be done considering the next pinout (from left to right): -, +
DC power adapter:
Connector: 4-pins microfit
Function: 12V DC 1A power voltage for the DCU
More information:
https://m2mserver.com/en/product/universal-power-
supply-12v-1a/
UTP (Ethernet) cable:
Type: Cat5e UTP PVC
Connector: RJ45

Chapter 4. Software system
4.1 Operation system
The device runs on OpenWRT®system with a micro Linux microkernel. The secure
boot system is integrated into the hardware-level eMMC secure chip and partitions
are encrypted by secure boot.
The DCU comes with a pre-installed system, which is tailored to the customer's
requirements and includes the operating system, software, and a factory default
configuration. The device uses a web user interface (LuCi®), and standard Linux-based
and UCI commands at the command line.
4.2 LAN block feature
If the Ethernet (LAN) cable is disconnected from the DCU or the device it's connected
to, the device will notify of the event and the LAN controller will be stopped for security
reasons. This can occur at the DCU or the connected device. The LAN controller can
be re-enabled from the Device Manager®.
To block the LAN interface, go to the Device Manager software, access the Device
config tab, and allow it in the DCU's configuration. If the Ethernet removal event
occurs, it will be signaled in the Device Manager and the LAN controller will be
disabled, stopping LAN traffic immediately. After restarting the device, the DCU will
still not be able to communicate on the LAN interface until you allow usage again
from the Device Manager®platform.
4.3 Device Manager platform
The Device Manager®software can be used for the remote management of the
routers, DCUs. The application allows for remote maintenance and reconfiguration of
the devices, as well as continuous monitoring of operating characteristics such as
network access, field strength, runtime, and QoS.
You can also replace and install firmware on the device and manage thousands of
routers, DCUSs from this program, allowing for remote control and execution of tasks
on the device. In the Device Manager software, individual or group settings can be
made. Legacy or TLS communication can also be allowed in the Device Manager
software during the M2M Industrial Router 2's communication.

4.4 TLS protocol communication
TLS v1.2 protocol communication can be activated between the DCU and the Device
Manager®from the software side, by choosing TLS mode or legacy communication.
The device uses the mbedTLS library and the Device Manager®(DM) uses the
OpenSSL library. The encrypted communication is double encrypted using a TLS
socket for added security.
The TLS solution uses mutual authentication to identify the two parties involved in
communication. Both sides have a private-public key pair, with the private key visible
only to the DM and DCU, and the public key in the form of a certificate. The device
firmware includes a factory default key and certificate, and until a custom certificate
from the DM is received, the DCU will authenticate itself with the embedded
certificate. The router only implements factory default, so any TLS connection can be
established with any certificate, including self-signed, as long as the encryption inside
TLS is known. Access requires knowledge of the encryption and a successful self-
authentication with the root password.
4.5 Accessing the device (via SSH connection)
The DCU can be accessed via an ssh connection, either remotely through the cellular
network (LTE Cat.1, Cat.M or Cat.NB) within the IP address range of the SIM card on
the WAN interface or via the local Ethernet interface (LAN). Access is protected with
RSA2 key.

Chapter 5. Starting the device
5.1 Connecting the DCU
1. Ensure that the DCU is not under power voltage, therefore the power adapter
cable is removed from the POWER titled microfit connector (1) –or the adapter
is not connecting to the power network. Ensure, that all the 3 LEDs (7) are blank.
2. Mount a proper LTE antenna to the left SMA connector (6).
3. Insert an activated SIM card to the SIM slot (2) - the SIM chip surface must be
look to top and the cutted edge of the SIM must be look to the DCU –then push
the SIM until it will be fixed and closed (you will hear a soft click sound).
(In case of necessary of SIM removal you have to power off the DCU and push
the SIM a bit, while it will be released and can be removed).
4. Connect an UTP cable to the device’s Ethernet titled RJ45 port (6). During the
configuration the cable’s opposite connector must be connected to the PC’s
Ethernet port. (After the configuration connect it to the network- or industrial
device’s RJ45 port.)
5. You can also configure the DCU through the micro-USB slot (4) by a microUSB-
USB cable of the PC connection.

6. Connect the RS485 device, Modbus meter, etc- to the RS485 port (8) to receive
the data of the external device or meter.
7. Connect Mbus device(s) you want to read out to the MBus port (9) to receive the
data of the external device(s). Max. 30 Mbus slave devices can be used at the
same time.
5.2 First start
The DCU is provided with pre-installed system (which contains the operating
firmware and the OpenWrt®system, which is accessible on the local website of the
device).
1. Connect the microfit connection power connector (1) when the DCU begins its
operation, where the LED lights will be signing and inform you about the
current status of the device.
2. After long time off, when powering the device on, all 3 LEDs will active with
red / orange color for a few seconds. this means that the charging of the
supercapacitor has began.
Normally, in case of rebooting, the supercapacitors are already charged,
therefore LEDs will be active with green.
LED1
LED2
LED3
3. Then the LED1 light is lighting continously by green, which signs that the
system is during loading (boot progress).
LED1
LED2
LED3
LED1
LED2
LED3
9-32V DC power voltage input (interface nr. 1) should be used by the DC
powering with microfit connection 12V DC power adapter, or you can use
alternatively 9-32V DC power voltage with own cabling (follow pinout hints).

4. The system start requires about 1-2 minutes, while the device loads the
necessary modules or the operation and prepares the web configuration user
interface –the LED2 will sign it. Then the web interface will be ready to login.
5. Configure the device’s wireless internet module settings (SIM and APN data
on the device web interface) for the cellular internet connection –otherwise
the DCU will be restarting in ever 10 minutes.
6. The module registration to the cellular network is signed by the LED3 flashing
after the settings. If it was succesful (to register the SIM card data to the
network) then the LED2 will lighting, which shows that the DCU can access the
cellular network already.
LED1
LED2
LED3
7. If you notice an unusual LED sign or other operation misbehaviour sympthoms,
read the Troubleshooting chapter.
8. If you’d like to make the DCU settings via USB connection (micro-USB port) then
install the USB Ethernet / RNDIS Gadget driver to your computer by using your
web browser: https://m2mserver.com/m2m-downloads/RNDIS_win10.ZIP
5.3 Web user interface of the DCU
1. To connect to the DCU, allow the device IP address for the Ethernet connector
interface in the Windows®’s network settings (IP address for Ethernet
connection: 192.168.127.100, Subnet mask: 255.255.255.0)
Attention!
•We suggest to change the login password on the web interface.
•If it is necessary, enable the DHCP service.
•Enable the firewall rules and IP route rules for the Ethernet connecting
devices.
•Check the RS485 settings (Ser2net).