LoRaWAN 863-870 Pulse - Guide utilisateur / User guide version V2.0.0
4.2. Downlink frames
LoRaWAN technology makes it possible to transmit information to the product from the network
(downlink frame).
The class A of the LoRaWAN specification allows the product to receive information from the network
by proposing two listening windows after each uplink communication (uplink frame).
4.2.1
Product configuration request frame
This frame allows to inform the product via the network that it must resend the product configuration uplink frame
(0x10).
0
1
Code
PAYLOAD
0x01
0x00
4.2.2
Network configuration request frame
This frame allows to inform the product via the network that it must resend the network configuration
uplink frame (0x20).
0
1
Code
PAYLOAD
0x02
0x00
4.2.3
Frame for adding an offset to pulse counters
This frame allows to add an offset to the counter value on each channel.
0
1 to 4
Code
0x03
Offset - chan-
nel A
0x03
0x00000015
Its size is of 9 bytes.
Description of the frame :
•
Bytes 1 to 4: Offset - channel A : numbers of pulses to add to current index of the meter (channel
A) (unsigned 32-bits, MSB first).
•
Bytes 5 to 8: Offset - channel B : numbers of pulses to add to current index of the meter (channel
B) (unsigned 32-bits, MSB first).
In the example in grey this gives:
•
Bytes 1 to 4 =0x00000015 so 21 pulses to add to channel A counter
•
Bytes 5 to 4 =0x00000050 so 80 pulses to add to channel B counter
2
3
0x00
0x00
2
3
0x00
0x00
5 to 8
Offset - chan-
nel B
0x00000050
4
5
0x00
0x00
4
5
0x00
0x00
6
7
0x00
0x00
6
7
0x00
0x00
Page
95
of 108
FR
EN