Vega Absolute SI-12 User manual

www.vega-absolute.ru
LORAWAN PULSE COUNTER
VEGA SI-12
USER MANUAL
DOCUMENT REVISION
FIRMWARE VERSION
13 2.1

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2Revision 13 of 4 August 2021
CONTENTS
INTRODUCTION............................................................................................................................................................................3
1 DESCRIPTION AND OPERATION ............................................................................................................................................4
Device description ....................................................................................................................................................................4
Comunication and data collection algorithm .....................................................................................................................4
Functional ...................................................................................................................................................................................6
Marking ........................................................................................................................................................................................6
2 SPECIFICATION ..........................................................................................................................................................................7
Device specification..................................................................................................................................................................7
Default device settings .............................................................................................................................................................8
3 OPERATION.................................................................................................................................................................................9
Device appearance....................................................................................................................................................................9
Contacts description...............................................................................................................................................................10
LED Indications ........................................................................................................................................................................12
Mounting Recomendations...................................................................................................................................................13
4 COMMUNICATION PROTOCOL ...........................................................................................................................................15
Vega SI-12 pulse counter transmits the following types of packets.............................................................................15
1. Packet with current readings .....................................................................................................................................15
2. “Alarm” packet ..............................................................................................................................................................16
3. External power information packet...........................................................................................................................16
4. Output state information packet ...............................................................................................................................17
5. Packet with time correction request.........................................................................................................................17
6. Settings packet..............................................................................................................................................................17
Vega SI-12 pulse counter receives packets of the following types...............................................................................18
1. Real-time clock adjustment........................................................................................................................................18
2. Output on command ..................................................................................................................................................18
3. Output off command ..................................................................................................................................................18
4. Packet with request of settings..................................................................................................................................18
5. Packet with settings .....................................................................................................................................................19
5 STORAGE AND TRANSPORTATION REQUIREMENTS ......................................................................................................21
6 CONTENT OF THE PACKAGE ................................................................................................................................................22
7 WARRANTY................................................................................................................................................................................23

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INTRODUCTION
This manual is designated for Vega SI-12 pulse counter (hereinafter – the counter)
manufactured by Vega-Absolute OOO and provides information on powering and activation
procedure, control commands and functions of the counter.
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
Vega SI-12 pulse counter is designed for counting of pulses incoming to 4 independent
inputs, further accumulating and transmitting of this information to the LoRaWAN network
In addition, Vega SI-12 can be used as a security device - all inputs can be configured as
security inputs.
The counter has two open-collector digital outputs and can be used as a control device.
The pulse counter can be used for any utilities’ meters and industrial equipment with
pulse output of dry reed switch type or open-drain type.
Equipment with NAMUR pulse output is not supported
De-bouncing logics with 5 msec time constant is integrated in the pulse counter. The
pulse counting is carried out for frequencies up to 200 Hz.
The counter is powered by a SAFT LS 17500 battery with capacity 3600 mAh. The
counter also can be powered by the 5V external power supply.
The device is powered by a non-rechargeable lithium-thionyl chloride
(LiSOCl2) battery
Attempts to charge the battery may result in fire
COMUNICATION AND DATA COLLECTION ALGORITHM
Vega SI-12 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.
Vega SI-12 supports two activation methods in the LoRaWAN®network - ABP and OTAA.
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

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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.
When switching to the "Storage" mode, all readings from the pulse inputs
accumulated in the device memory are reset
The device forms the data packet with current state with a configurable period from 5
minutes to 24 hours. The packets stored in the device memory and transmitting during the next
communication session with the LoRaWAN®network.
Examples
If the data collection period is set to 24 hours the packet is formed at 00.00 on the
internal clock of the device
If the data collection period is 12 hours then at 00.00 and at 12.00, and so on.
The adjustable data transfer period can be from 5 minutes to 24 hours. When beginning
of communication session, the device starts sending packets with readings from the earliest
packet. The time of data transmitting cannot be specified, it’s defined in random way for every
device in chosen period of transmission from the moment of connection to the network.
Example
Transmission period is 30 minutes, and device was started at 16:40 by the internal device
clock. In random way the device calculate data transmitting time and set it at 16:41 in the half-
hour period from 16:40 to 17:10. Thus, packets from this device will transmit at 16:41, at 17:11,
at 17:41, at 18:11 and so on every 30 minutes by the internal device clock.
The internal clock is set automatically when you connect to the device through USB, also
can be adjust via LoRaWAN® network.

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FUNCTIONAL
Vega SI-12 pulse counter can be either of A class or C class (LoRaWAN classification) and
has the following features:
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)
Simultaneous readings from 4 independent inputs
Two open-drain outputs
Two operating modes: "Active" and "Storage”
Inputs switching to the “Security” mode for connection of leakage, safety, and
other external sensors
Saving non-transmitted packets in device memory
Time referencing readings by internal clock
Communication in case of security inputs actuation
Temperature measurement
Charge measuring of the built-in battery (%)
MARKING
Device marked with sticker that contain the next information:
Device model;
DevEUI;
Month and year of manufacture;
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:
Information about firmware version;
QR-code containing DevEUI and keys for device registration in network via OTAA
method.

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2 SPECIFICATION
DEVICE SPECIFICATION
MAIN
Double-contact digital inputs
up to 4
Maximum input frequency
200 Hz
Security inputs
up to 4
Open-drain outputs
2
USB-port mini-USB, type B
Operating temperatures
-40…+85 °С
Built-in temperature sensor
yes
LORAWAN®
LoRaWAN®class A or C depending on presence of the
external power supply
Quantity of LoRaWAN 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 200 packets
Type of the LoRaWAN antenna internal
Sensitivity -138 dBm
Radio coverage in restrained urban conditions up to 5 km
Radio coverage within line of sight up to 15 km
Transmitter power by default 25 mW (configurable)
Maximum transmitter power 100 mW
POWER
External power supply 5 V
Battery
SAFT LS 17500 3600 mAh
Calculated number of packets sent by the
device with default settings
80 000
CASE
Housing dimensions, no more than 90 х 49 х 46 mm
Ingress protection rating IP65
Mounting
Clamp fastening to the support, DIN-rail,
wall-mounting

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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
Inputs operate in mode
pulse
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 SI-12 is represented in small plastic case which has four screws and mounting for
DIN-rail.
1 – screw ø 2 mm х
2 – DIN-rail with mounting holes ø 3 mm
3 – silicone gasket without through holes, ensuring the protection rating of the device
case IP65.
All of elements for manage and indication as well as connecting contacts are placed on
the board inside the case.
4 – launch button
5 – LED indicator
6 – contacts
7 – USB-port
1 2
3
4
5
6
7

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CONTACTS DESCRIPTION
When connecting a radio modem to external devices, consider the internal circuitry of
its pulse inputs shown below.
CONTACT
DESCRIPTION
Ʇ
Power -
+5V
Power +
IN1, IN2, IN3, IN4
Pulse inputs
Ʇ, Ʇ
Signal ground
out 1
out 2
Open-collector outputs 1 and 2
Ground contacts (Ʇ,Ʇ) are used for connection of pulse inputs IN1, IN2, IN3 and IN4.
De-bouncing logics with 5 msec time constant is integrated in the pulse counter. The
pulse counting is carried out for frequencies up to 200 Hz.
The pulse counter has 4 pairs of contacts that is allows to connect circuits with the
following types of NO contacts:
reed switch;

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mechanical pushbutton;
open-collector output.
Equipment with NAMUR pulse output is not supported
Polarity effects only "open collector" circuits.
To reset all readings from the pulse inputs accumulated in the device memory you need
to switch the device to the "Storage" mode by holding the start button pressed
(min. 5 seconds).
Pulse inputs can be configured for work in the "Security" mode via the “Vega LoRaWAN
Configurator” application. In this mode, the device does not count pulses at the "Security"
input, but only monitors its status. Should the "Security" input trigger, the device is activated
and sends an alarm message to the network.
The maximum possible frequency of sending alarm packets is one per 1 second.
The actuators are connected to the counter via outputs out 1 и out 2, which are of the
type "Open-drain".
Permissible load for each digital output is 0.2 A
To increase the load on the device outputs, it is necessary to use an external relay. The
relay connection scheme is shown below.

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LED INDICATIONS
There is one red LED on the board. The indication is only used when the device is
activating in the LoRaWAN® network and when the operating modes are changing.
LED SIGNAL
MEANING
Short flashings Linking to the network in progress
One long flashing
during 5 sec
The device has been successfully
connected to the network and is in
active mode
Three flashings each by
1 sec
Linking to the network has been failed
or the device switched to the
“Storage” mode
In case of connection attempt fail, the device will continue to accumulate
data and will attempt to connect to the network every 6 hours
LED location on the
board

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MOUNTING RECOMENDATIONS
To provide the stable radio between the gateway and the end device is recommended
avoiding the device installation in the places which are barriers for the radio signal getting
through like a reinforced floors and walls, a basement, an underground facilities and wells, a
metal case etc.
The necessary stage for the network deploying including a big quantity of end devices is
a radio planning work with nature experiments.
Before starting mounting work, you must make sure that the latest firmware
version is installed on the equipment
For mounting you will need:
cross-shaped screwdriver ;
awl;
wire stripper;
laptop.
Step by step mounting be like:
1. Setting the devices and connecting them to the network are usually carried out in the
office (see Network Deployment Manual).
2. Determination of suitable places for mounting at the object with a network tester.
3. De-energizing the connected equipment, metering devices, etc.
4. Making holes in the silicone gasket for wires - strictly according to the number of
wires. It must be remembered that the wire must be of circular cross-section and no
more than 3 mm in diameter.
When removing the sealant, as well as when installing wires of a different
diameter or cross-section, device performance may deteriorate until
failure due to moisture entering the case
5. Connecting all necessary wires to the SI-12 contacts.
6. Device launching – switching to the “Active” mode and registration in the network.

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7. By the laptop you can make sure that the device successfully sends the data.
8. Before assembling the device, it is necessary to reset the pulses accumulated during
testing and connection by switching the device to the "Storage" mode by pressing
the button for 5 seconds.
9. Start the device by pressing launch button.
10. Assembling the device.
11. DIN-rail mounting or another available way to mount the device on the object.
Location of the
launch button on
the board

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4 COMMUNICATION PROTOCOL
This part describes the SI-12 communication protocol with LoRaWAN®network.
In fields consisting of several bytes, the little endian byte order is used
VEGA SI-12 PULSE COUNTER TRANSMITS THE FOLLOWING TYPES OF PACKETS
1. Packet with current readings
Sent regularly on LoRaWAN port 2
Size in bytes
Field description
Data type
1 byte Packet type, this packet == 1 uint8
1 byte Battery charge, % uint8
1 byte Values of basic settings (bit field) uint8
4 bytes Reading time for values in this packet (unixtime UTC) uint32
1 byte
Temperature, °С
int8
4 bytes
Input 1 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
4 bytes Input 2 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
4 bytes
Input 3 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
4 bytes
Input 4 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
The counter has internal clock and calendar; time and date are factory set. When sending
a packet with the current readings, the device uses the data taken at the nearest time, which is
multiple to the interval according to data collection period:
1 hour period: the readings of the beginning of the current hour are sent;
6 hours period: 00:00, 06:00, 12:00, 18:00 readings are sent;
12 hours period: 00:00, 12:00 readings are sent;
24 hours period: the readings of 00:00 of the current day are sent.

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"Values of basic settings" bit field decoding
Bit
Meaning
0 bit Activation type: 0 - OTAA, 1 – ABP
1, 2, 3 bits Communication period:
|1 == 0|2==0|3==0| - 5 minutes
|1 == 1|2==0|3==0| - 15 minutes
|1 == 0|2==1|3==0|- 30 minutes
|1 == 1|2==1 |3==0|- 1 hour
|1 == 0|2==0|3==1|- 6 hours
|1 == 1|2==0|3==1|- 12 hours
|1 == 0|2==1|3==1|- 24 hours
4 bit
First input type: 0 – pulse, 1 - security
5 bit
Second input type: 0 – pulse, 1 - security
6 bit
Third input type: 0 – pulse, 1 - security
7 bit
Fourth input type: 0 – pulse, 1 - security
Time zone considered during collection data from an external meter.
2. “Alarm” packet
Packet sent in case of security input closure on LoRaWAN port 2
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 2
uint8
1 byte Battery charge, % uint8
1 byte Values of basic settings (bit field) uint8
1 byte Input No, where the alarm is detected (1…4) uint8
4 bytes Time of the modem at a moment of the packet transmission
(unixtime UTC)
uint32
4 bytes Input 1 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
4 bytes
Input 2 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
4 bytes Input 3 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
4 bytes Input 4 reading (depending on the type – number of pulses
or status: 0 – open, 1 - closed)
uint32
When sending alarm packet, the device uses the data taken at moment of alarm triggers.
3. External power information packet
Sent in case of change external power status on LoRaWAN port 2
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 4
uint8
1 byte
Battery charge, %
uint8
1 byte
Values of basic settings (bit field)
uint8
1 byte
External power state (0 – off, 1 - on)
uint8
4 bytes
Generation packet time (unixtime UTC)
uint32

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4. Output state information packet
Sent in case of change output state on LoRaWAN port 2
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 5
uint8
1 byte
Battery charge, %
uint8
1 byte
Values of basic settings (bit field)
uint8
1 byte
Output number (1-2)
uint8
1 byte
New output state (0 – off, 1 - on)
uint8
4 bytes
Generation packet time (unixtime UTC)
uint32
5. Packet with time correction request
Sent every seven days on LoRaWAN port 4
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 255
uint8
4 bytes
Time of the modem at a moment of the packet transmission
(unixtime UTC)
uint32
After receiving this type of package, the application can send to modem the packet with
time correction.
6. Settings packet
Transmitting on LoRaWAN port 3 when settings request command received, or device
connected to the network
Size in bytes
Field description
Data type
1 byte Packet type, this packet == 0 uint8
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len byte Parameter value -----
… … …
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----

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VEGA SI-12 PULSE COUNTER RECEIVES PACKETS OF THE FOLLOWING TYPES
1. Real-time clock adjustment
Sent by application on LoRaWAN port 4
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 255
uint8
8 bytes
The value in seconds for which you need to adjust the time.
Can be positive or negative
int64
When receiving the packet, the pulse counter sets its internal clock and calendar in
compliance with the received packet.
2. Output on command
Sent by application on LoRaWAN port 2
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 3
uint8
1 byte
Output no. (1 or 2)
uint8
1 byte Output on time in seconds (1…255, 0 - forever). uint8
3. Output off command
Sent by application on LoRaWAN port 2
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 4
uint8
1 byte
Output no. (1 or 2)
uint8
4. Packet with request of settings
Sent by application on LoRaWAN port 3
Size in bytes
Field description
Data type
1 байт
Packet type, this packet == 1
uint8
Answering that packet, the device sent the packet with settings.

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5. Packet with settings
Sent by application on LoRaWAN port 3, identical to such packet from device
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 0
uint8
2 bytes
ID
of parameter
uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len byte
Parameter value
-----
… … …
2 bytes ID of parameter uint16
1 byte
Data length (len)
uint8
len bytes Parameter value -----
The package with settings sent to the device may not contain all the settings supported by
the device, but only the part that needs to be changed.

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Table of ID of SI-12 parameters and these possible values
ID of
parameter
Description
Data
length
Possible values
4
Confirmed uplinks
1 byte
1 – confirmed
2 – unconfirmed
8
Uplinks number of transmissions
1 byte
from 1 to 15
12
Input 1 mode
1 byte
1 – pulse
2 – guard
13 Input 2 mode 1 byte 1 – pulse
2 – guard
14 Input 3 mode 1 byte 1 – pulse
2 – guard
15 Input 4 mode 1 byte 1 – pulse
2 – guard
16
Communication period
1 byte
1 – 1 hour
2 – 6 hours
3 – 12 hours
4 – 24 hours
5 – 5 minutes
6 – 15 minutes
7 – 30 minutes
49 Data collection period 1 byte 1 – 1 hour
2 – 6 hours
3 – 12 hours
4 – 24 hours
5 – 5 minutes
6 – 15 minutes
7 – 30 minutes
55 Time zone, in minutes 2 bytes from -720 to 840
6.