WM Systems M2M PRO4 MODEM User manual

M2M Router PRO4 ®
Installation Guide
v1.70
_________________________________________
2021-04-12

Document specifications
This document was made for the M2M Router PRO4® device and it contains all relevant
installation steps of the device.
Document category:
Installation Guide
Document subject:
M2M Router PRO4
®
Author:
WM Systems LLC
Document version No.:
REV 1.70
Number of pages:
33
Linux Kernel:
4.14.23
OpenWRT software version:
202011161
Document status:
FINAL
Last modified:
12 April, 2021
Approval date:
12 April, 2021

Table of contents
CHAPTER 1. WIRING AND PREPARATION ......................................................... 4
1.1 Description of interfaces ..................................................................................................... 4
1.2 Safety declaration .............................................................................................................. 5
1.3 Mounting, fixation .............................................................................................................. 9
1.4 Cabling, wiring................................................................................................................... 10
1.5 Important notes ................................................................................................................. 13
1.6 Understanding the LED signals............................................................................................ 13
CHAPTER 2. INSTALLING THE DEVICE.............................................................. 15
2.1 The very first startup.......................................................................................................... 15
2.2 Normal startup................................................................................................................... 16
2.3 Local access via Ethernet.................................................................................................... 17
2.4 Local access via USB LAN ................................................................................................... 17
2.5 Web user interface and Login ............................................................................................. 18
2.6 SSH access ........................................................................................................................ 21
2.7 Wireless access.................................................................................................................. 22
2.8 LED indication.................................................................................................................... 24
2.9 Power On / Supercap Charging mode .................................................................................. 25
2.10 Service features ............................................................................................................... 27
CHAPTER 3. DEVICE CONFIGURATION (MAIN IMPORTANT SETTINGS) ............. 30
CHAPTER 4. SUPPORT ..................................................................................... 32
CHAPTER 5. LEGAL NOTICE ............................................................................. 33

1. Wiring and Preparation
1.1 Description of interfaces
➢1 –Power supply connector ~100-230V AC, 50Hz (4-pins terminal block), pinout (left to
right): L, N, -, PE
➢2 –micro SD card slot (for micro-SD card, for alternative micro-SD boot or data storage)
➢3 –micro-USB connector (PC connection - USB LAN bridge - for configuration, debug)
➢4 –Primary SIM-card slot (2FF-type mini SIM card, push-insert) for LTE 4G module
➢5 –Secondary SIM-card slot (2FF-type mini SIM card, push-insert) –active in case of
presence of the optional LTE450, LTE Cat.M/Cat.NB module
➢6 –Ethernet LAN1 port (IEE 802.3, 100/10 Mbit FastEthernet, full duplex, bridged, RJ45
connector)
➢7 –Ethernet LAN2 port (IEE 802.3, 100/10 Mbit FastEthernet, full duplex, bridged, RJ45
connector)
➢8 –Ethernet LAN3 port (IEE 802.3, 100/10 Mbit FastEthernet, full duplex, bridged, RJ45
connector)
➢9 –Ethernet LAN4 port (IEE 802.3, 100/10 Mbit FastEthernet, full duplex, bridged, RJ45
connector)
➢10 –Industrial terminal block (isolated RS485 port (upper 3-pins), optional M-Bus connector
(middle 3-pins), 2 digital inputs (lower 3-pins))
➢11 –Reset button –has multiple features, see Reset features chapter later
2
13
3
4
8
9
10
12
11
1
6
7
5
L N - PE

➢12 –ANT Main –Primary antenna connector, SMA-M, 50 Ohm antenna for 4G LTE
connection
➢13 –ANT Diversity - Diversity antenna connector, SMA-M, 50 Ohm antenna (recommended
to use for 4G LTE connection)
1.2 Safety declaration
The device must be used and operated according to the related user manual.
The installation can be carrying out only by a responsible, instructed and skilled
person by the service team, who has enough experience and knowledge about
carrying oug the wiring and installing the router device.
Its prohibited to touch or modify the wiring or the installation by the user. It is prohibited to
open the device enclosure during its operation or under power connection.
It is also prohibited to remove or modify the device PCB. The DCU and it’s parts must not be
changed by other items or devices.
Any modification and repairation is not allowed without the permission of the manufacturer. It
all causes the loss of product warranty.
Only a certified expert or the manufacturer is allowed to open the enclosure!
Caution! Please consider the following, ~100-230V AC 50Hz, electric
shock hazard inside the enclosure! DO NOT open the enclosure and DO
NOT touch the PCB!
Consumption: Min. 3W / Average (2G/3G communication): 4W / Advanced (4G LTE
communication): 10W / Max: 15W (with expansion and 2nd wireless module)
The IP51 immunity protection will be effective only in case of under normal usage
and operation conditions with unharmed hardware conditions by using the device in
the provided enclosure/chassis.
Deliberate damage or occing casualty of the device means the loss of product
warranty.
To ensure general safety, please follow the following guideline!
■Keep the chassis area clear and dust-free during and after installation.
■Keep tools and chassis components away from walk areas.

■Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and
roll up your sleeves.
■Wear safety glasses when working under conditions that might be hazardous to your eyes.
■Do not perform any action that creates a hazard to people or makes the equipment unsafe.
Safety with Electricity
Follow this guideline when working on equipment powered by electricity.
■Read all the warnings in Safety Warnings.
■Locate the emergency power-off switch for your installation location. If an electrical accident
occurs, you can quickly turn off the power.
■Disconnect all power before:
–Installing or removing a chassis
–Working near power supplies
■Look carefully for possible hazards in your work area, such as moist floors, ungrounded
power extension cables, frayed power cords, and missing safety grounds.
■Do not work alone if hazardous conditions exist.
■Never assume that power is disconnected from a circuit. Always check.
■Never open the enclosure of the device’s internal power supply.
■If an electrical accident occurs, proceed as follows:
–Use caution; do not become a victim yourself.
–Turn off power to the device.
–If possible, send another person to get medical aid. Otherwise, assess the victim’s
condition and then call for help.
–Determine if the person needs rescue breathing or external cardiac compressions; then
take appropriate action.

Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It may
occur if electronic printed circuit cards are improperly handled and may cause complete or
intermittent failures. Always follow ESD prevention procedures when removing and replacing
modules:
■Ensure that the router chassis is electrically connected to earth ground.
■Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the
clip to an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to
ground. To guard against ESD damage and shocks, the wrist strap and cord must operate
effectively.
■If no wrist strap is available, ground yourself by touching a metal part of the chassis.
Caution: For the safety of your equipment, periodically check the resistance value of the
antistatic strap. It should be between 1 and 10 megohms (Mohm).
Warning!
IMPORTANT SAFETY INSTRUCTIONS
This warning symbol means danger. You are in a situation that could cause bodily injury.
Before you work on any equipment, be aware of the hazards involved with electrical circuitry
and be familiar with standard practices for preventing accidents. Use the statement number
provided at the end of each warning to locate its translation in the translated safety warnings
that accompanied this device.
SAVE THESE INSTRUCTIONS
Warning: Before working on equipment that is connected to power lines, remove jewelry
(including rings, necklaces, and watches). Metal objects will heat up when connected to power
and ground and can cause serious burns or weld the metal object to the terminals. Statement
43
Warning: In order to comply with FCC radio frequency (RF) exposure limits, antennas should
be located at a minimum of 7.9 inches (20 cm) or more from the body of all persons.
Statement 332
Warning: Do not work on the system or connect or disconnect cables during periods of
lightning activity. Statement 1001
Warning: Before performing any of the following procedures, ensure that power is removed
from the AC circuit. Statement 1003

Warning: Read the installation instructions before you connect the system to its power source.
Statement 1004
Warning: This product relies on the building’s installation for short-circuit (overcurrent)
protection. Ensure that the protective device is rated not greater than: 20A. Statement 1005
Warning: This unit is intended for installation in restricted access areas. A restricted access
area can be accessed only through the use of a special tool, lock and key, or other means of
security. Statement 1017
Warning: The plug-socket combination must be accessible at all times, because it serves as the
main disconnecting device. Statement 1019
Warning: This equipment must be grounded. Never defeat the ground conductor or operate
the equipment in the absence of a suitably installed ground conductor. Contact the appropriate
electrical inspection authority or an electrician if you are uncertain that suitable grounding is
available. Statement 1024
Warning: This unit might have more than one power supply connection. All connections must
be removed to de-energize the unit. Statement 1028
Warning: Only trained and qualified personnel should be allowed to install, replace, or service
this equipment. Statement 1030
Warning: Ultimate disposal of this product should be handled according to all national laws and
regulations. Statement 1040
Warning: For connections outside the building where the equipment is installed, the following
ports must be connected through an approved network termination unit with integral circuit
protection:
10/100 Ethernet. Statement 1044
Warning: To prevent the system from overheating, do not operate it in an area that exceeds
the maximum recommended ambient temperature of: Statement 1047
Warning: Installation of the equipment must comply with local and national electrical codes.
Warning: To prevent airflow restriction, allow clearance around the ventilation openings to be
at least: 3 inches (7.6 cm). Statement 1076
Warning: Hot surface. Statement 1079
Caution: This industrial router can only be accessed by service personnel or by users who have
been instructed about the reasons for the restrictions applied to the location. Access is through
the use of a tool or lock and key, or other means of security, and is controlled by the authority
responsible for the location.

Caution: Be aware of the size and weight of the industrial router when mounting. Ensure that
the mounting location has a stable flat surface and can safely support the weight of the device.
1.3 Mounting, fastening
The device enclosure (unit) contains a DIN-Rail fixation due its case, which is to be intended to
mount to DIN-35 rail or using a 3-point fixation by screws, or using the hook (in hanging
position).
You can also mount the enclosure to wall, place into server rack or similar fixation opportunity.
The unit must be mounted inside a cabinet by the listed fixation points, in vertical orientation.
Bottom side of the unit enclosure
➢A –Device housing case back plate
➢B –Hook for fixation to wall/mount
B
A
C
D
E
E

➢C –DIN-rail sleede for fixation
➢D –DIN-rail position holder (release/fixate)
➢E –Additional hooks for fixation to wall/mount
Please note that close metal parts, the cabinet metal material and the industrial conditions as
the usage of high rate power or other external gained radio frequency signals can cause radio
signal disturbance and could cause weak wireless signal at reception or data transmitting or
could cause less effective signal reception, weak wireless fidelity. In any of these, we recommend
you to test the wireless signal reception and quality and if it is necessary use external, magnetic
mount antenna which is leaded outside of the cabinet and placed onto the cabinet’s surface –
to ensure enough reception.
1.4 Cabling, wiring
1. Remove the plastic, transparent port protector (No. 15) part by releasing the two
screws (No. 14) from the top of the enclosure and slide up the plastic part, then remove
upside.
Now you can free to connect
wires and cables to the ports
and interfaces.
2. Mount a 4G LTE antenna to
the ANT Main titled (no. 12)
SMA antenna connector and
mount an recommended to
also using a secondary
antenna also and mount to the
ANT Diversity (no. 13) SMA
connector. Twist the antenna
to the connector until it is
fastened.
You can use LTE wireless antenna with 3-6dB, 9dB or more gained versions. RG174 cable
SMA antenna with magnetic mount can be also using for external usage.
The antenna must be placed and oriented that it should has a some clearance in any
direction.
14
14
15

3. Insert and push an activated mini SIM card to the SIM 1 titled tray (No. 4), top SIM
holder. Insert by following the hints of SIM card figure for the proper orientation. (The SIM
chip-side will be face down and the cutted edge towards to inside and push until it sleeves).
4. If you are using an LTE450 module than you need to insert the SIM card into the bottom
SIM 2 tray (No. 5). Orientation: the SIM chip will face up and the SIM title down.
5. You can use the micro-USB (No. 3) connector with a microUSB-to-USB cable connection as
USB LAN - instead of the Ethernet connection.
6. Beside / instead of USB connection you can connect an UTP cable to the LAN1 (No. 6)
and/or LAN2 (No. 7), LAN3 (No. 8), LAN4 (No. 9) RJ45 interface Ethernet port.
The other side of the UTP cable must be plugged to your computer or a network device
(hub or switch, if you are attempted to use one).
Note, that the Ethernet ports are bridged by default, which means its equal which port you
are using.
7. By default, the router has an installed OpenWRT®operating system which is ready to use
and configure to your SIM card APN and for you usage requirements.
8. Plug the 100-230V AC power supply to power input terminal block (No. 1), according the
pinout.
Current / power consumption (AC power source) –optional mains input
•Power supply / Voltage range: ~110-230V AC, 50 Hz
•Current: 0.1A at ~230V AC
•Consumption: 3 - 15W

The following cables are not part of the accessories of the delivered package.
Use the following hints and the recommendation to choose useful cable and type to prepare
the necessary connection(s) according to your requirements.
AC cable (optional):
The power cord 70 cm type, OMYA 4 x 1 mm^2, voltage Insulation min. 500 V, maintaining
colors and ends with the power supply enabling connection to a 230V AC
Function: ~100-230V AC power supply to the router
Pins must be wired for usage: L (phase), N (null), -, PE (grounding) (see schematic for pinout)
UTP (Ethernet) cable:
Cable Type: Cat5e UTP PVC
Connector type: RJ45 Ethernet
Function: RJ45 (LAN) Ethernet connector to external device
RS485 cable:
Type: 2 + 3x LgY 0.75 mm2m signed by color, blanked cables
Connector type: 3-pins terminal block
Pinout (from left-to-right): B, A, GND
Function: RS485 connection, up to max. 32 external devices
*M-Bus cable (optional to use, available only with M-Bus expansion):
Cable type: 3 + 3x LgY 0.75 mm2, signed by color, blanked cables for data connection

Connection type: 3-pins terminal block
Pinout (from left-to-right): Ex3 (M-), Ex2 (M+), Ex1 (COM)
Function: M-Bus connection, up to max. 30 external devices
Digital inputs:
Cable type: 3 + 3x LgY 0.75 mm2, signed by color, blanked
cables for data connection
Connection type: 3-pins terminal block
Pinout (from left-to-right): DI1 (input #2), DI0 (input #1),
GND (ground)
Function: receiving 2 digital inputs of external devices
microUSB-USB configuration cable:
Type: micro-USB-USB cable
Connector típe: USB 2.0 micro Type B connector
Function: alternative LAN bridge (USB LAN) for configuration –connecting to computer
1.5 Important notes
•The 4G LTE modules can be used by inserting SIM card into the SIM1 tray
•For the SIM2 tray you can use LTE 450 Cellient MPL-200 module or an LTE Cat.M1 /
Cat.NB2 Quectel module - which is connecting on the internal miniPCI-Express 2.0 slot.
These modules can only work with an LTE450, Cat.M, Narrow Band (NB-IoT) compatible SIM
card that can be inserted into the SIM2 slot. (In this case, only the SIM2 slot can be used.)
Please pay attention to the use the SIM2 tray, the chip is facing up.
•The IPv6 protocol is disabled for the LAN interfaces by default, change it if you want to
use it instead of the IPv4 protocol. Use the Network / Interfaces menu LAN1..LAN4
interface and the IPv6 relevant fields.
•You have to use two 4G LTE antenna for the stable wireless network operation. You can
check the signal reception and wireless availability in the Overview menu.
•The available APN settings will be assured by the SIM card provider mobile operator or your
mobile internet service provider. Ask them about APN, password, SIM PIN and further
necessary information for the configuration.
RS485
MBUS*
2DI

•When configuring the SIM or APN settings, after the saving the device, it will not restart the
modem automatically with the new settings. You need to restart the modem by the Restart
WAN button in the OpenWrt®menu at Network / Modem settings.
1.6 Understanding the LED signals
The router has 16 LEDs to assign the device’s current status, communication, physical
connection.
These LEDs are located in four groups:
-Operation status LEDs (Group A)
oPWR –Power source connected / mains on
oON –The device has been started
oSUPERCAPACITOR CHARGE (in case of exhausted supercapacitor it shows the
recharge)
-Connectivity LEDs (Group B)
oMBUS activity (on terminal block, MBus pins)
oRS485 connection and activity (on on terminal block, RS485 pins)
oWAN –wireless network connection and access
oUSBLAN connection (on microUSB port)
oKERNEL –for sign possible failures, stand-by mode
-cellular network signal strength indication LEDs (Group C)
osignal 1 to signal 4: wireless signal reception (higher is better)
-LAN (Ethernet) connectivity LEDs (Group D)
oLAN1 port to LAN4 (by the detected the RJ45 port connection)

The power indication group (group A) and signal level leds (group C) are is fixed, but the other 9
LEDs (group B and group D) are free to reonfigurable.
D
C
A
B

Chapter 2. Installing the device
2.1 The very first startup
The router has a super-capacitor component insidem, which can protect the device against the
possible short (<5sec) power outages. Therefore this component can be charged and it can be
exhausted after an outage or if you store the device for months without connecting power source
or using.
In these cases you cannot start the router as usual by adding the AC power supply only, because
only the PWR led will be active (lighing by green), but the device won’t start further.
First, you must start the router by the adding the power source and pushing the Reset button
(No. 11) for 2 seconds by a sharp object (e.g. by a pen) –while the ON led will be also active (all
the two leds are lighting by green colour) –then you can release the Reset button.
Then the device will start immediately and charging the supercapacitor (SUPERCAPACITOR
CHARGE led will be also active –by yellow colour).

Next time you don’t need to push the Reset.
You can stop the device anytime by removing the power source and start the device by adding the
AC power on.
2.2 Normal startup
The router has a pre-installed system (which contains the firmware and the pre-configured
OpenWrt®system).
After adding power source to the device you will just need to configure some necessary and unique
settings for your SIM card, network access, and some other required connection parameters.
Please, start the router by the following sequence.
1. If you are using 4G LTE module, insert an activated SIM card into SIM 1 tray (No. 4) in the
right position. The usage of SIM 1 holder is obligatory to use for wireless communication.
2. If you are using LTE450 or Cat.M/Cat.NB module, insert active SIM card into SIM 2 titled
tray.
3. Mount two antennas to the Antenna interfaces (No. 12 and 13).
4. After plugging the AC Power source (No. 1), the device begins to perform booting –the
LED signals are always showing the current activity during the operation. The system start
needs about 40-50 seconds while it will be ready for usage, network communication.
5. During the boot, the device begins to operate, whereas its LED signals are showing the
current activity during the operation.
6. After adding power to the device, you need to set a few custom configuration parameters for
the SIM card, mobile network access, and other desired parameters. The device must be
turned on in the following order.
Boot sequence:
a.) First the LAN1 –LAN4 leds are blinking for half a second, which signs that the power was
added. The PWR and ON leds are also active (lighing by green).
b.) Then the MBUS and RS485 LEDs are ligthing for ~10 seconds during the firmware start.

c.) The MBUS, RS485, WAN, USBLAN leds will be flashing during 30 seconds until boot.
d.) At the end of the boot process, only the WAN, USBLAN leds are flashing for 5-10 seconds.

e.) When the connectivity LEDs are not blinking anymore the load of the system has finished.
f.) If the WAN (APN) interface was not configured yet, the SIGNAL LEVEL low LED is blinking
which means the router tries to connect to the wireless network. If it will was configured
properly (APN, password and SIM PIN is matching) and the registration was succesful, then
the WAN led will be lighting and the current SIGNAL LEVEL leds will be also lighting its
signal strength value which means connected and you have useful wireless signal reception
for the usage and data transmitting.
g.) If you have already connected the USBLAN or LAN1..LAN4 or the MBUS, RS485, the
interface connectivity led will be also active and signing the network connection and data
traffic.
When the device has reached the listed point „e.)” then the device is already accessible on its LAN
and USBLAN interfaces, therefore now you can login to the LuCi®web user interface (or connect
via SSH).

2.3 Local access via Ethernet port (LAN1..LAN4 interfaces)
The default Ethernet IP address of the device is 192.168.1.1
Add the 192.168.1.x IPv4 address (where x can be between 2 and 255) to your computer’s
Ethernet interface for connecting to the device.
Then you can access the device through the web user interface or by SSH.
For connecting to the router on web interface use the https://192.168.1.1 URL.
Important!
The DHCP service is turned on for the Ethernet interfaces, by default.
The ETH1..ETH4 interfaces are bridged, therefore its not important which port are you currently
using, all network data and TCP/IP packets will be relied.
2.4 Local access via USB LAN (USB connection)
1. Download, unpack and install the USBLAN driver for using the USB connection:
https://www.m2mserver.com/m2m-downloads/USB_Ethernet_RNDIS_DRIVER.zip
2. After you’ve connected the USB-microUSB cable, you can add the driver in the Windows®/
Start / Control Panel / System / Device Manager. Find the Network Cards, extend
it and you will found the „USB Ethernet / RNDIS Gadget”. Double click on the entry and
choose the Driver tab, and the Refresh button, then browse the uncompressed file’s
directory then Install the driver.)
3. Build a connection between the PC and the device with a microUSB-to-USB cable.
4. Configure the USB-Ethernet interface IP address on your PC for the „USB
Ethernet/RNDIS Gadget” and setup the next fixed ipv4 address: 192.168.10.10, subnet
mask is: 255.255.255.0 –connect these settings.
(You can ping the device through the USB connection on its IP address.)
5. The USBLAN interface IP address is 192.168.10.1
For connecting to the device on web interface use the https://192.168.10.1 URL.