11
•
OTAA (Over The Air Activation)
– meter makes three trying to connect the network with configured
frequency plan (RU868 by default). The meter will begin to send data when it receives the LoRaWAN
activation confirmation. If all attempts fail, the meter will continue to accumulate data and will
attempt to connect to the network every six hours.
By default, meter makes attempts to connect to the network with OTAA method once a day until it
connected to the server. You can change default settings via “Vega LoRaWAN Configurator” application (see
part 3.5).
You can initiate emergency communication session including activation by a magnet getting on
external magnetic field reception area for 15-20 seconds (fig.2).
2.6.2 CLASS
А
DEVICE
Meter is class A device (by LoRaWAN classification) and has the following features:
•
ADR («Adaptive Data Rate»);
•
sending of confirmed messages (configurable);
•
storing undelivered messages in device memory while sending messages with confirmation;
•
adjustable data collection and transmission periods;
•
temperature measurement;
•
charge measuring of the built-in battery in %.
2.6.3 COMMUNICATION AND COLLECTION PERIODS
2.6.3.1 COMMUNICATION PERIOD
Communication period may be equal to 1, 6, 12 and 24 hours. Device sends data in random point in
time during set period
:
•
If communication period equal to 1 hour, then during the next hour;
•
If communication period equal to 6 hours, then during the next 6 hours;
•
If communication period equal to 12 hours, then during the next 12 hours;
•
If communication period equal to 24 hours, then during the next 24 hours.
2.6.3.2 DATA COLLECTION PERIOD
Data collection period may be equal to 1, 6, 12 and 24 hours. Meter saves data in the internal
memory with time by the internal clock:
•
at 00.00 when the period is equal to 24 hours;
•
at 00.00 and at 12.00 when the period is equal to 12 hours;
•
at 00.00, 6.00, 12.00 and 18.00 when the period is equal to 6 hours;
•
at the beginning of current hour when the period is equal to 1 hour.
The readings are stored in the meter memory until the next communication session; maximum
number of saved messages is 200. At the next communication session, the device starts sending
accumulated messages, from the earliest to the latest.
With the "Confirmed uplinks" option turned off, the device just sends all accumulated messages to
the network in order from the earliest to the latest. There is no check of package delivery in this mode. Non-
transmitted messages do not save in the device memory.
With the "Confirmed uplinks" option turned on, the device will send the next message 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, the meter 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 messages remain in the device memory
until the next communication session.
