Bob Assistant - Reference Manual
2023-04-04 - Version 1.0
27
2.7.2.2.
Rear Label
Label
Label content
QRCode content :
LW:D0:
AAAAAAAAAAAAAAAA
:
DDDDDDDDDDDDDDDD
:
0128
0040
:P
5080001001
:S
ssssssssss
:C
cccc
AAAAAAAAAAAAAAAA
AppEUI/JoinEUI (example :
70B3D531C1120020
)
DDDDDDDDDDDDDDDD
DevEUI (example :
70B3D531C0002904
)
0128
LoRa VendorID
0040
VendorProfileID / LoRa Index
5080001001
Watteco Family Code (example 5080001001=50-80-001-001)
ssssssssss
Hex format Serial Number*
cccc
CRC-16 (Modbus) of the QRCode content**
QRCode content example:
LW:D0:
70B3D531C1120020
:
70B3D531C0002904
:
0128
0040
:P
5080001001
:S
002EA5AE55
:C
EB12
Cleartext content:
“W
atteco
”
= Device vendor
“
BOB Assistant EU 868MHz
”
= Device description
“50
-80-001-
001” = Device
family code/reference
“51/22”
= WW/YY of production (here: W51 of Y2022)
“70B3D531C0002C13” = Device D
evEUI
*To retrieve the Serial Number
ssssssssss
:
-
Transform the hex value of the field
ssssssssss
=
002EA5AE55
to decimal value
o
0x002EA5AE55
(hex)=
078261
0005
(decimal)
-
Retrieve the batch number and serial number of the device in the batch:
o
078261
are the last 6 numbers of Watteco’s batch number
078261
<=> 0
078261
batch
number
o
0005
is the serial number in the batch
**CRC-16/Modbus example :
For the following content:
LW:D0:
70B3D531C1120020
:
70B3D531C0002904
:
0128
0040
:P
5080001001
:S
002EA5AE55
CRC-16 modbus calculation gives
cccc
=
EB12
