Vega NB-13 / User Manual
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Revision 06 of 24 January 2022
1 DEVICE PURPOSE AND OPERATION PRINCIPAL
DEVICE PURPOSE
Vega NB-13 modem with RS-232/RS-485 interface is designed for the data collection
from the external devices connected through RS-232/RS-485 interfaces and transmitting them
to the server by the NB-IoT technology.
In addition, Vega NB-13 can be used as a security device – two additional inputs operate
in security mode, there is also a Hall sensor.
The modem with RS-232/RS-485 interface can be used for any utilities’ meters and
industrial equipment with RS-232 or RS-485 interface or for the periodic collection of
temperature values from the 1-Wire sensors.
RS-232 and RS-485 have the separate contacts but they can’t operate at the same time.
You can choose it at a software level while setting the device.
Vega NB-13 has an external NB-IoT antenna and ingress protection rating IP67. Also,
modem has an output for external devices powering with 8 V.
The counter is powered by an external supply with power 5…55 V.
OPERATION ALGORITHM
Modem can operate in two modes: in the transparent mode the Vega NB-13 modem
does not collect data, in the data collection mode the data collection and communication are
carried out by the schedule.
In the “Transparent” mode, the modem opens a transparent radio channel between the
device connected via the RS-485/RS-232 interface and the TCP server. After connecting the
power, the device immediately opens the communication channel if the timeout of the
transparent channel session is not set, and the session is supported indefinitely. If the timeout
is set, then the session closes automatically after the timeout. Opening a session can be
performed: when the power is connected (only when the timeout is not set), during an event
at the security input, by the Hall sensor, by the button (holding up to two LED flashes), by
command from the configurator. In the transparent mode, the modem does not accumulate
data in the black box.
In the “Data collection” mode the readings are collected from the meter with a
configurable period 5, 15, 30 minutes, 1, 6, 12 or 24 hours. The readings stored in the device
memory and transmitting during the next communication session with the NB-IoT network.
The adjustable data transfer period can be equal to 5, 15, 30 minutes, 1, 6, 12 and 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. If there
is no network registration or server connection the undelivered packets are saved in the device
memory until the next communication session according to the schedule. Herewith, the device
