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16 Supplement
VEGAPULS Air 41 • Autarkic device with measured value transmission via radio technology
64808-EN-210426
sions of the LTE mobile radio standard to IoT applications. Both enable the wireless connection of
mobile, physical objects to the Internet via the mobile network.
You can find more information about the respective mobile phone provider.
16.3 Radio networks LoRaWAN - Data transmission
LoRaWAN
LoRaWAN (Long Range Wide Area Network) is a network protocol for wireless signal transmission
to a corresponding gateway. LoRaWan enables a range of several kilometres outdoors and good
building penetration with low power consumption of the transmission module.
In the following, the necessary device-specific details are shown. You can find further information of
LoRaWAN on
www.lora-alliance.org
.
Data stream, byte order, packet structure
The data are transferred as a byte stream in packets. Each packet is given an identifier at the begin-
ning which defines the meaning of the following bytes.
The byte order corresponds to the Cayenne Low Power Payload (LPP) Guideline as BigEndian.
Packet 2 is transferred as standard. Alternative packets are required if additional characteristic val-
ues (error status, position) occur in the sensor. The maximum packet size is 52 bytes in Europe and
11 bytes in the USA with maximum spread factor.
A LoRa standard function additionally transmits a packet counter and the serial number of the LoRa
module with every packet.
Packet structure
Packet
Note
2
3
4
5
6 (USA) 7 (USA) 254
Number of bytes
1
1
1
1
1
1
1
Packet identifier
1
1
1
1
1
1
Namur status of the device
4
4
4
4
Measured value as floating point num-
ber
1
1
1
1
Unit, measured value
1
1
1
1
Remaining capacity of Lithium cells
in %
2
2
2
2
Temperature in °C, resolution ±0,1 K
8
8
8
Location (GNSS)
4
4
4
VEGA Device status
1
1
1
1
Angle of inclination to the perpendicular
11
19
15
23
10
6
1
Total
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