Vega Absolute M-BUS-1 User manual

www.vega-absolute.ru
LORAWAN CONVERTER
M-BUS-1
User Manual
M-BUS-1 converter is used for reading of values from metering
instruments via M-BUS interface and further transmitting of this
data to the LoRaWAN network.
M-BUS-1 has also two security inputs and two ‘open drain’
outputs.

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Document Information
Title
M-BUS-1 LoRaWAN device
Document type
Manual - Translation from Russian
Document number
V02-MBUS1-01
Revision and date
10 –27 May 2019
This document applies to the following products:
Product name
Type number
End devices
M-BUS-1
Revision History
Revision
Date
Name
Comments
01
29.08.2017
KEV
Document creation date
02
05.10.2017
TII
Minor changes
03
26.10.2017
KEV
External devices connection was added
04
30.10.2017
TII
Work in transparent mode, exchange protocol edits, part
“Contacts” is expanded
05
05.04.2018
TII
Supported connected devices list, the number of
warranty packages has changed, minor changes
06
10.08.2018
KEV
Changes in the device logic, frequency plans are added,
changes in the communication protocol, in technical
characteristics, new supported meters are added
07
02.11.2018
KEV
Typo about battery capacity in the specification is fixed,
new supported heat meter is added
08
22.01.2019
KEV
Changes in the communication protocol, in
specification, settings by the air described, added
“Marking” part and “Indication” part
09
24.01.2019
KEV
Inaccuracy in communication protocol fixed –packet
type for packets with settings and request of settings
10
27.05.2019
KEV
Settings changed (page 32): settings 12 and 13 deleted,
and a 32 added

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CONTENTS
INTRODUCTION.........................................................................................................................................................................4
1 DESCRIPTION AND OPERATION .........................................................................................................................................5
Device description .................................................................................................................................................................5
Comunication and data collection algorithm ..................................................................................................................6
Functional ................................................................................................................................................................................6
Marking.....................................................................................................................................................................................7
2 SPECIFICATION .......................................................................................................................................................................8
3 OPERATION..............................................................................................................................................................................9
Contacts ...................................................................................................................................................................................9
Indication ...............................................................................................................................................................................11
Initial startup..........................................................................................................................................................................12
External devices connection..............................................................................................................................................13
Converter operation in the independent poll mode of the metering devices ........................................................13
Converter operation in the transparent mode ...............................................................................................................14
Connecting via USB .............................................................................................................................................................14
4 VEGA LORAWAN CONFIGURATOR...................................................................................................................................16
Interface of the application ................................................................................................................................................16
Connection to the device...................................................................................................................................................17
“Device info” tab ...................................................................................................................................................................18
“LoRaWAN settings” tab ......................................................................................................................................................20
«Vega MBUS-1» TAB ............................................................................................................................................................25
5 COMMUNICATION PROTOCOL ........................................................................................................................................27
Converter M-BUS-1 transmits the following types of packets....................................................................................27
Converter M-BUS-1 receives packets of the following types .....................................................................................30
6 STORAGE AND TRANSPORTATION REQUIREMENTS ...................................................................................................33
7 CONTENT OF THE PACKAGE .............................................................................................................................................34
8 WARRANTY.............................................................................................................................................................................35

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INTRODUCTION
This manual is designated for M-BUS-1 device (hereinafter –device, converter)
manufactured by Vega-Absolute LLC 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.
The device shall be installed and adjusted by qualified specialists in
order to ensure proper operation of the device

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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 «Danfoss Sonometer 500»
•Heat meter «ELF-M Teplovodomer»
•Heat meter «WESER Heat Meter»
•Heat meter «Kamstrup Multical 801»
•Heat meter «Kamstrup Multical 402»
The converter is powered by a 6400 mAh built-in battery with service life up to 10
years, provided data transmitted once a day. 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.
For the correct functioning of the converter in the independent poll mode,
it is recommended to connect one-model counting devices to one converter
If you simultaneously use different models of metering devices with a single
converter, you should only use the transparent mode of polling devices

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COMUNICATION AND DATA COLLECTION ALGORITHM
The readings 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 adjustable data transfer period can be from 1 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 remain 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. There are no non-transmitted messages in the device memory.
The internal clock is set automatically when device connected to the "Vega LoRaWAN
Configurator" via USB, also adjustable via LoRaWAN.
FUNCTIONAL
M-BUS-1 converter can either be of class A or class C (LoRaWAN classification) and has
the following features:
oAutomatic change from A class to C class when powered from an external power
supply
oADR support (Adaptive Data Rate)
oSending of confirmed packets (configurable)
oExtra communication in case of security inputs actuation
oTemperature measurement by the internal temperature sensor
oCharge measuring of the built-in battery (%)

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MARKING
Device marked with sticker that contain the next information:
oDevice model;
oDevEUI;
oMonth and year of manufacture;
oQR-code containing DevEUI for automatized count.
Sticker 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 and contains:
oInformation about firmware version;
oQR-code containing DevEUI and keys for device registration in network via OTAA
method.

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2 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
AppEui by default
4D2D425553203120
LoRaWAN class
A or С
Quantity of LoRa channels
16
Frequency plan
RU868, EU868, IN865, AS923, AU915,
KR920, US915, KZ865, custom (EU868
based)
Activation type
ABP or OTAA
Communication period
1, 6, 12 or 24 hours
Data collection period
5, 15, 30 minutes, 1, 6, 12 or 24 hours
Memory amount for storing packets
50 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)
Maximum transmitter power
100 mW
Power
Built-in battery
6400 mAh
External power supply
10…36 V
Warranty number of packets sent by the device,
not less
20 000
Case
Housing dimensions
95 х 80 х 65 mm
Ingress protection rating
IP65
Mounting
clamp fastening to the support, DIN-
rail, wall-mounting

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3 OPERATION
CONTACTS
Converter has 10 contacts, see table below:
Contact
Designation on the board
Description
1
OUT_2
Open-drain output 2
2
OUT_1
Open-drain output 1
3
+VPWR
Power +
4
Power -
5
MBAS-
M-BUS -
6
MBAS+
M-BUS +
7
COUNT_2
Security input 2
8
Ground
9
COUNT_1
Security input 1
10
Ground
Ground contacts 8 and 10 are used for connection of security inputs COUNT_1 and
COUNT_2.
Security inputs of the M-BUS-1 device are used to connect circuits with the following
types of NO contacts:
- reed switch (Herkon);
- mechanical pushbutton;
- open-drain output.

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While security input connected the device monitors its closure/unlocking. Should the
security input triggering, the device is activated and sends an alarm message to the network.
For connect an external metering instrument contacts M-BUS+ иM-BUS- are used.
The outputs OUT_1 and OUT_2 operate on the principle of open-drain and can be used
to control external devices, such as electric cranes, lighting, sirens and so on. The load capacity
of each output is no more than 200 mA.
In order to increase the battery life, the physical level of the M-BUS interface is switch on
(supply voltage is applied to the outputs MBAS +, MBAS-) just before meter polling with a
programmable delay (the delay value is depending on the type of connected meter). The delay
is introduced for initializing own meter interface and its preparing for receiving data from the
converter. When the polling is complete, the physical M-BUS level is turned off.
When the converter is in class C, the physical level of the M-BUS interface is constantly
on and does not turn off after completing a poll.