Vega Absolute M-BUS-1 User manual

www.vega-absolute.ru
LORAWAN CONVERTER
M-BUS-1
USER MANUAL
DOCUMENT REVISION
FIRMWARE VERSION
15 2.0 and higher

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CONTENTS
INTRODUCTION.........................................................................................................................................................................4
1 DESCRIPTION AND OPERATION ......................................................................................................................................... 5
Device description .................................................................................................................................................................5
Comunication and data collection algorithm .................................................................................................................. 5
Functional ................................................................................................................................................................................ 6
Marking .....................................................................................................................................................................................7
2 SPECIFICATION .......................................................................................................................................................................8
Device specification............................................................................................................................................................... 8
Default Device Settings ......................................................................................................................................................... 9
3 OPERATION............................................................................................................................................................................ 10
Device Appearance .............................................................................................................................................................. 10
Contacts Description ........................................................................................................................................................... 12
LED Indications .....................................................................................................................................................................14
Mounting Recomendations................................................................................................................................................15
Converter operation in the independent poll mode.....................................................................................................17
Converter operation in the transparent mode ...............................................................................................................17
Converter operation in the universal poll mode............................................................................................................17
4 COMMUNICATION PROTOCOL – 1.1 VERSION.............................................................................................................21
Converter M-BUS-1 transmits the following types of packets.................................................................................... 21
1. Packet with current readings from connected heat meter ...................................................................................21
2. Packet with data from connected M-BUS device.................................................................................................... 22
3. Packet with data about external power..................................................................................................................... 22
4. «Alarm» packet..............................................................................................................................................................22
5. Packet with data about state changes of the outputs OUT_1 or OUT_2............................................................ 23
6. Packet with time correction request..........................................................................................................................23
7. Settings packet............................................................................................................................................................... 23
Converter M-BUS-1 receives packets of the following types .....................................................................................24
1. Real-time clock adjustment ........................................................................................................................................ 24
2. Query of readings log................................................................................................................................................... 24

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3. Output on command ...................................................................................................................................................24
4. Converter operation in transparent mode................................................................................................................25
5. Output off command ...................................................................................................................................................25
6. Packet with request of settings................................................................................................................................... 25
7. Packet with settings is identical to such packet from device ................................................................................26
5 STORAGE AND TRANSPORTATION REQUIREMENTS ................................................................................................... 28
6 CONTENT OF THE PACKAGE .............................................................................................................................................29
7 WARRANTY ............................................................................................................................................................................. 30

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INTRODUCTION
This manual is designated for M-BUS-1 device (hereinafter – device, converter)
manufactured by Vega-Absolute OOO and provides information on powering and activation
procedure, control commands and functions of the device.
This manual is targeted at specialists familiar with installation work fundamentals for
electronic and electrical equipment.
Vega-Absolute OOO reserves the right to make changes to the manual related to the
improvement of equipment and software, as well as to eliminate typos and inaccuracies,
without prior notice.

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1 DESCRIPTION AND OPERATION
DEVICE DESCRIPTION
The device M-BUS-1 is designed for reading of values from metering instruments via M-
BUS interface and further accumulating and transmitting of this data to the LoRaWAN®network.
M-BUS-1 has two ‘open-drain’ outputs so it can be used as a control device. Also, device has
two security inputs.
Converter M-BUS-1 may operate in two modes. Converter can be used for any utilities’
meters and industrial equipment with M-BUS interface while it operates in the transparent
mode. But in the independent poll mode of the metering devices converter can be used only
with the next supported devices:
•Heat meter “Teplouchet-1”
•Heat meter “STE 21 “Berill”
•Heat meter “ELF-M Teplovodomer”
•Heat meter “Landis Gyr T230”
•Heat meter “Sharky 775”
•Heat meter “Pulsar”
•Heat meter “Calec ST II”
•Heat meter “Calec ST II_2”
•Heat meter “Sensonic II”
•Heat calculator “ZENNER_MULTIDATA_WR3”
•Heat meter “Pulse STK-15”
•Heat meter “Hiterm PUTM-1”
The converter is powered by a 6400 mAh built-in battery. The converter can be powered
by the 10…36 V external power supply.
Quantity of connecting M-BUS devices to the converter is up to 10 at the same time.
Starting with firmware version 2.0 and higher, M-BUS-
1 supports
simultaneous connection of metering devices of different models and
manufacturers
COMUNICATION AND DATA COLLECTION ALGORITHM
Vega M-BUS-1 operates in modes listed below:
“Storage” – is a mode for storing and transporting. In this mode the device does not
communicate regularly with the network.
“Active” – is a main mode of device operation.
Before start using you need to switch the device out of “Storage” mode.

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Vega M-BUS-1 supports two activation methods in the LoRaWAN®network - ABP and
OTAA. Select one of the methods via the “Vega LoRaWAN Configurator” application (see “User
Manual” on the program).
ABP method. After pressing the start button, the device immediately starts working in the
"Active" mode.
OTAA method. After pressing the start button, the device makes three attempts to
connect to the network within the set frequency plan. After the activation in the LoRaWAN®
network is confirmed, the device sends a signal (LED flashing for 5 seconds) and switches to
the "Active" mode. If all attempts fail, the counter will continue to accumulate data and will
attempt to connect to the network every 6 hours.
Hold the start button pressed (min. 5 seconds) to switch the device from the "Active"
mode back to the "Storage" mode without turning off the power (battery or external).
The readings are collecting from the meter with a configurable period from 5 minutes to
24 hours. The readings stored in the device memory and transmitting during the next
communication session with the LoRaWAN®network.
The readings are read from the connected device at 00.00 on the internal clock of the
device if the data collection period is set to 24 hours, at 00.00 and at 12.00, if the period is 12
hours and so on.
The adjustable data transfer period can be from 5 minutes to 24 hours. Data transferring
in random point in time during set period. At the next communication session, the device starts
sending accumulated packets with readings, from the earliest to the latest.
With the "Confirmed uplinks" option turned on, the device will send the next packet only
after receiving a confirmation of the delivery of the previous one. If such confirmation has not
received after the fulfilled in the settings uplink number of transmissions, device completes the
communication session until the next one according to the schedule. In this case, the device
continues to collect data according to the data collection period and store it in memory. Non-
transmitted packets are remained in the device memory until the next communication session.
With the "Confirmed uplinks" option turned off, the device just sends all accumulated
packets to the network in order from the earliest to the latest. There are no checks of package
delivery in this mode. After communication session there are no non-transmitted messages in
the device memory.
The internal clock is set automatically when device connected to the "Vega LoRaWAN
Configurator" throughUSB, also can be adjust via LoRaWAN®network.
FUNCTIONAL
M-BUS-1 converter can either be of class A or class C (LoRaWAN®classification) and
has the following features:

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Automatic change from A class to C class when powered from an external power
supply
ADR support (Adaptive Data Rate)
Sending of confirmed packets (configurable)
Extra communication in case of security inputs actuation
Temperature measurement by the internal temperature sensor
Charge measuring of the built-in battery (%)
MARKING
Device marked with sticker which contains the next information:
Device model;
DevEUI;
Month and year of manufacture.
Sticker is located in three places – on device case, in factory certificate and on the packing
box.
Besides, there is an additional sticker located on the packing box which contains:
Information about firmware version;
QR-code containing DevEUI and other keys for device registration.

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2 SPECIFICATION
DEVICE SPECIFICATION
MAIN
M-BUS interface 1
Quantity of connecting M-BUS devices up to 10
Security inputs 2
‘Open-drain’ outputs 2
USB-port mini-USB, type B
Operating temperatures -40…+85 °С
LORAWAN®
LoRaWAN class
A or С
Quantity of LoRa channels 16
Frequency plans supported by default
RU868, EU868, KZ865, custom (EU868
based)
Frequency plans available as order option
IN865, AS923, AU915, KR920, US915
Activation type ABP or OTAA
Communication period 5, 15, 30 minutes, 1, 6, 12 or 24 hours
Data collection period 5, 15, 30 minutes, 1, 6, 12 or 24 hours
Memory amount for storing packets 100 packets
Antenna connector SMA
Sensitivity -138 dBm
Radio coverage in restrained urban conditions max 5 km
Radio coverage within line of sight max 15 km
Transmitter power by default 25 mW (configurable)
POWER
Built-in battery
6400 mAh
External power supply 10…36 V
Calculated number of packets sent by the
device with default settings
30 000
CASE
Housing dimensions
95 х 80 х 65 mm
Ingress protection rating IP65
Mounting clamp fastening to the support, DIN-rail,
wall-mounting
PACKAGE
Dimensions 140 х 80 х 85 mm
Weight
0.271 kg

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DEFAULT DEVICE SETTINGS
PARAMETER
VALUE
Frequency plan RU868
Activation type OTAA
Adaptive Data Rate ON
Confirmed Uplinks OFF
Rx 1 Delay 1 second
Join Accept Delay 5 seconds
Uplink number of transmissions 1
Data rate DR0
Power 14 dBm
Communication period 24 hours
Data collection period 24 hours
Time zone UTC +00:00
For changing the device settings, you need to connect to it with “Vega LoRaWAN
Configurator” application. You can download app on the iotvega.com site in SOFT section as
well as User Manual for configurator. Go to the app page.

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3 OPERATION
DEVICE APPEARANCE
Vega M-BUS-1 is represented in black plastic case which has six screws and mounting
for DIN-rail. The device case is equipped with a hermetic gland of M12 size. A sealant is installed
inside the gland, ensuring compliance with the declared Ingress Protection rating of the device
case.
1 – screws ø 3 mm х 16 mm, cross
2 – DIN-rail with mounting holes ø 3 mm
3 – input of external antenna
4 – cable gland of M12 size for installing the cables and wires with circular cross-section
with a diameter of 5...6 mm.
2
1
4
3
Internal structure of cable gland