Ewattch SQUID-HC-LORAWAN Technical Manual page 9

The SQUID-LoRaWAN transmits its data in a raw format on different public and private
LoRaWAN networks.
The section below shows you how to decode the frames (Payload) sent by the SQUID.
Periodic frames
The periodic frames contain the data measured by the SQUID.
Example of a periodic transmitted frame (HEXADECIMAL):
0025 48 509F06 A03E0D
F56900 EAD300 D4A701
Explanation of the frame structure:
Index
(in bytes)
1
2
3
The data below are in an unsigned 24-bit format and little-endian encoded.
Example of conversion: 0x509F06 => 0x069F50 => 434000 decimal => x10mAh =>
4,340,000mAh or 4,340Ah and to have the power in VAh, it must be multiplied by the network
04-june
07-sept
10-dec
13-15
16-18
19-21
•••
37-39
wattch
Payload descriptions
407D1A F56900
Name Example
Frame type 00
Payload size 25
48
Object Type
The multiplying coefficient is x 10 mAh
Channel 1 509F06
Channel 2 A03E0D
407D1A
Channel 3
Channel 4 F56900
Channel 5 EAD300
D4A701
Channel 6
••• •••
Channel 12 D4A701
9
EAD300 D4A701 509F06
Description
Data sent periodically
Other possible values:
0x01: Data sent during an event
0x10: Sensor status data
Number of bytes sent.
0x25 in hexadecimals gives 37 bytes
(excluding header: Frame type and
Payload Size)
Type of object
0x48: SQUID (12 MEASUREMENT
CLAMPS)
Channel 1: 4,340Ah
Channel 2: 8,680Ah
Channel 3: 17,360Ah
Channel 4: 271.2Ah
Channel 5: 542.5Ah
Channel 6: 4,340Ah
Channel 12: 4,340Ah
A03E0D 407D1A
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