WM Systems M2M PRO4 MODEM User manual

M2M PRO4 MODEM®
Installation Guide
v0.92
_________________________________________
2020-02-17

Document specifications
This document was made for the M2M PRO4 MODEM® device and it contains all relevant
installation steps of the device.
Document category:
Installation Guide
Document subject:
M2M PRO4 MODEM
®
Author:
WM Systems LLC
Document version No.:
REV 0.92
Number of pages:
34
Hardware version:
BE008x
Linux Kernel:
4.14.23
OpenWRT software version:
202002071
Document status:
FINAL
Last modified:
17 February, 2020
Approval date:
17 February, 2020

Table of contents
1. WIRING AND PREPARATION........................................................................ 4
1.1 Description of interfaces ..................................................................................................... 4
1.2 Safety declaration .............................................................................................................. 4
1.3 Mounting, fixation .............................................................................................................. 8
1.4 Cabling, wiring................................................................................................................... 9
1.5 Important notes ................................................................................................................. 12
1.6 Understanding the LED signals............................................................................................ 13
2. INSTALLING THE MODEM ............................................................................ 14
2.1 The very first startup.......................................................................................................... 14
2.2 Normal startup................................................................................................................... 14
2.3 Local access via USB .......................................................................................................... 17
2.4 Web user interface and Login ............................................................................................. 18
2.5 SSH access ........................................................................................................................ 20
2.6 Wireless access.................................................................................................................. 20
2.7 LED indication.................................................................................................................... 22
2.8 Power On / Supercap Charging mode .................................................................................. 24
2.9 Service features ................................................................................................................. 25
2.10 Alternative installation of the OpenWrt®system ................................................................. 26
3. MODEM CONFIGURATION (MAIN IMPORTANT SETTINGS) ............................ 29
4. SUPPORT..................................................................................................... 31
5. DEVICE DATA, CERTIFICATION ................................................................... 32
5.1 Datasheet of the device...................................................................................................... 32
5.2 Wireless module certification ............................................................................................. 33
6. LEGAL NOTICE ............................................................................................ 34

1. Wiring and Preparation
1.1 Description of interfaces
1 –~100 - 240V AC power input plug (4-pins terminal block), the pinout from left-to-right
is the following: L, N, -, PE
2 –micro USB connector (PC connection - for configuration, alternative DC power input)
3 –SIM (2FF-type mini SIM card slot, push-insert SIM holder)
4 –RS485 port (isolated RS485, half-duplex data interface, RJ12 connector), for up to 31
meter connection
5 –Reset button (hole) –has multiple features, see Reset features chapter later
6 –ANTENA –Antenna connector for 4G LTE wireless network usage, SMA-M, 50 Ohm
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 out the wiring and installing a modem 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.
2
3
4
6
5
L N PE
1

It is also prohibited to remove or modify the device PCB. The modem 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.
Caution!
Only a certified expert or the manufacturer is allowed to open the enclosure!
By general the device is using AC mains. 100-240V AC, 50Hz, electric shock
hazard inside the enclosure! DO NOT open the enclosure and DO NOT touch
the PCB.
(Consumption: Min. 2W / Average: 3-4W / Max: 10W
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 modem’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 modem 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 DC 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: 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 metering modem 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 metering modem when mounting. Ensure that
the mounting location has a stable flat surface and can safely support the weight of the device.
1.3 Mounting, fixation
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.
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.

Figure of bottom side of the unit enclosure
A –Device housing case back plate
B –Hook for fixation to wall/mount
C –DIN-rail sleede for fixation
D –DIN-rail position holder (release/fixate)
E –Additional hooks for fixation to wall/mount
1.4 Cabling, wiring
1. Remove the plastic, transparent port protector part (No. 8) by releasing the two screws
(No. 7) from the top of the enclosure and slide up the plastic part carefully from the
protector’s rails (No. 9), then remove it from upside direction.
Now you can free to connect wires and cables to the ports and interfaces.
2. Mount a 4G LTE antenna to the ANTENA titled (no. 6) SMA antenna connector. Twist the
antenna to the connector until it is fastened.
B
A
C
D
E
E

You can use 4G LTE wireless
antenna with 3-6dB, 9dB or more
gained versions. RG174 cable SMA
antenna with magnetic mount can
be used for external usage.
The antenna must be placed and
oriented that it should has a some
clearance in any direction.
3. Insert and push an activated
mini SIM card to the SIM titled
card holder (No. 3), 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. You can use the micro USB (No. 2) connector with a microUSB-to-USB cable connection as
USB LAN - instead for configuring or access the device.
5. You can use the micro USB port (No. 2) to power the modem by DC power (5V) instead
of using the 100-240V AC power (as an alternative way for powering).
2
3
4
6
5
1
7
7
8
6
9
9

6. By default, the modem has an installed OpenWRT®operating system which is ready to use
and configure to your SIM card APN and for you usage requirements.
7. Plug the 100-240V AC power supply connector to the 100..240V AC interface (No.
1), then plug the power cable to the external electricity plug –according the
orientation of the power connector and the pinout (from left-to-right: L, N, -, PE), where
L=phase, N=neutric, PE=ground. Add a stable AC power to the device.
Current / power consumption (AC power source) –mains input
Power supply / Voltage range: ~100-240V AC, 50 Hz
Current: 0.1A at ~100-240V AC Consumption: 3W - 10W
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 240 V AC
Function: ~100-240V AC power supply to the modem
Pins must be wired for usage: L, N, -, PE (see schematic for pinout)
RS485 cable:
Type: 2 + 3x LgY 0.75 mm2
Connector type: RJ12
Function: / R485 connector to external IEC1107 or DLMS/COSEM protocol compatible utility
meters
In case of presence of ~5V DC (by using the USB interface for alternative power source)
(No. 2 interface) to connect DC supply power for the device –instead of using the AC
power input (No. 1. interface), the following declared current values are the valid.
Current and power consumption (AC power source / mains)
Power supply / Voltage range: 5 VDC
Current: 800mA at 5V DC
Consumption: 3W - 10W
W

microUSB-USB configuration cable:
Type: microUSB–to–USB cable
Connector type: USB 2.0 micro Type-B connector
Function: for configuration –connecting the device to a computer or provide alternative
power source: DC power (5V DC)
Schematic figure of wiring, interfaces, pinout
1.5 Important notes
The modem has 4G wireless transmission capabilities and 2G/3G fallback in case of the
unavailability of the 4G network. In this case, the device will operating on the 3G or 2G
network. When the 4G network will be available again, the device will switch back to the 4G
network. This feature is configurable for the WAN interface of the device.
You have to use the LTE antenna for the sake of a stable wireless network operation. You
can check the current signal reception and wireless availability in the OpenWRT®/ LuCi®
system’s 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.
When configuring the SIM #1 APN or PIN settings, after the saving, the modem will not
restart its module automatically with the new settings. You need to restart the modem by
the Restart WAN button in the OpenWrt®menu at Network / Interface settings.
The utility meter readout through the RS485 port is possible only by using and connecting
IEC1107, DLMS compatible (IEC 62056-21, IEC 62056-31 supported) devices.
You have to configure the RS485 meter connection settings at the Network/IEC scheduler
menu item.

1.6 Understanding the LED signals
The device has 16 LEDs to assign the modem’s current status, the communication, connection.
These LEDs are located in four groups:
-Operation status LEDs (Group A)
oMOC –Power source connected / mains on
oWL –The modem has started
oLADOWANIE SUPERCONDENSATORA (in case of exhausted super-capacitor part
which shows the process of the recharge –when the charge has been finished, the
LED will be blank again)
-Connectivity LEDs (Group B)
o4G-WAN –wireless network connection and access
oUSB connection (on the micro USB port)
oBLAD –for sign possible failures, kernel-level events, stand-by mode
-Cellular network signal strength indication LEDs (Group C)
osignal 1 to signal 4: wireless signal reception (higher is better)
-Data connections and activity LEDs (Group D)
oRS485 TX - connection and activity (data transmitted) - on the RJ12 connector
oRS485 RX - connection and activity (data received) - on the RJ12 connector
oPamiec –memory activity (data read, write in the non-volatile memory)
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 reconfigurable.
D
C
A
B

2. Installing the modem
2.1 The very first startup
The modem has a super-capacitor part inside, which protect the device against possible shorter
power outages. It can also provide RTC backup for the device, up to 2 days. Therefore, this supercap
component can be charged and it can be exhausted after an outage or if you store the modem for
months without connecting power source or using.
Start the device by the adding the AC power (No. 1) or DC power (via USB port at No. 2) source
and pushing the Reset button (No. 5) for 2 seconds by a sharp object (e.g. by a pen) –while
the ON led will be also active (the PWR and ON leds are lighting by green colour) –then you can
release the Reset button.
Then the modem will start immediately and charging the supercapacitor (LADOWANIE
SUPERKONDENSATORA led will be also active –by yellow colour).
Next time you don’t need to push the Reset. You can stop it by removing the power source and
start it by adding the power source.
2.2 Normal startup
The modem has a pre-installed system (which contains the device firmware and the pre-configured
OpenWrt®system).
After adding the power source to the modem, you will just need to configure some necessary and
unique settings for your SIM card, network access, and some other required connection parameters.

Start the modem by the following sequence.
1. Ensure that you have inserted an activated SIM card into SIM holder (No. 3) in the right
position. The usage of SIM holder is obligatory for using the wireless communication.
2. Ensure that antenna is mounted to the SMA interfaces (No. 6).
3. After plugging the AC power source (No. 1), the modem 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.
4. During the boot, the modem begins to operate, whereas its LED signals are showing the
current activity during the operation.
During the boot sequence:
a.) The MOC (power) and WL (ON) leds are also active (lighing by green).
b.) Then the first two connection LEDs are (untitled ont he following figure) ligthing for ~10
seconds during the firmware start.
c.) Then the 4G-WAN, USB leds will be also flashing for 30 seconds during the boot process.

d.) At the end of the boot process, only the 4G-WAN, USB leds will be flashing for 5-10 seconds.
e.) When the connectivity LEDs are not blinking anymore the load of the system has been
finished.
f.) The SILA SIGNALU (SIGNAL LEVEL) low LED(s) are blinking which means the modem tries
to connect to the wireless network. If it was configured properly (APN, password and SIM
PIN is matching) and the network registration was also succesful, the 4G-WAN led will be
lighting with the SIGNAL LEVEL leds will be also lighting (by signing the current wireless
signal strength). This means that the modem is already connected to the cellular network
and it has enough wireless signal reception for the usage and wireless data transmitting.
g.) If you already connected the USB cable, the USB led will be active.

h.) The RS485 RX led (in case of meter data receive) or the RS485 TX led (in case of sending
data to the meter) will be active –which signs the data traffic, modemmeter activity.
When the USB led is active during the load of the system, this signs that the device is already
accessible on its USB interface –it is possible for you login at the LuCi®web user interface
(or connect to the modem via SSH).
2.3 Local access via 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 to micro-USB 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 modem 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 modem on web interface use the https://192.168.10.1 URL.

2.4 Web user interface and Login
1. The modem’s local web user interface (LuCi®) is reachable through the Ethernet or
USB interface –on the default addresses.
2. Enter the default web user interface (LuCi®) of the modem.
The USB web interface default URL is: https://192.168.10.1
3. Use the Mozilla®browser! In your browser window you will get a security risk message.
Ignore the security message and choose the Advanced option here.
4. Then click on the Accept the Risk and Continue button to access the modem webpage.
Attention!
For accessing the web user interface we recommend to use the Mozilla Firefox®web browser.
Other browsers cannot be used.

5. The OpenWRT®system’s LuCi®web interface has loaded into your browser. Now fill the
Username and Password fields and click on the Login button for the entry.
Username: root
Password: wmrpwdM2M

2.5 SSH access
The modem can be accessed through SSH connection, when it is available on its IP address –by a
terminal utility (e.g. the putty tool).
Putty is a free tool which can be downloaded from the following URL:
https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
The modem can be accessed on SSH at the 192.168.10.1:22 (port nr. 22 - on USB interface).
Allow to acccess the device, ignore the security breach message in your computer in the pop-up
window.
Choose Accept (Yes) at the Putty or other SSH terminal’s Security Alert of the RSA2 key
of the modem to allow and trust the connection –by security reasons.
SSH login data:
Login as: root
Password: wmrpwdM2M
Now you are logged into the
OpenWrt®’s Linux command line.
The operating system uses the
embedded Micro uCLinux, kernel
4.4 version, therefore you can use standard and compatible Linux commands –if you want.
2.6 Wireless access
Before using the wireless access you need to setup the SIM card’s current APN properties at
the OpenWrt®web interface.
You have to configure these settings (SIM and APN) for connecting to the wireless network properly.