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LoRaWAN US915 PULSE - User guide version V1.0.0
17
Page
of 26
2.2.3
Periodic transmission with redundancy
The product enables to ad redundancy in the frame with historisation (cf scheme here under). Thanks
to redundancy the product will memorize a certain number of data and send them again in the next
frame.
The parameters associated with this mode of operation are:
• Historisation period (register 321) and sending frequency (register 301)
•
Enabling and Configuring inputs (register 320)
• Number of data to be repeated (register 340).
Example with redundancy:
Register
Encoding
Value
Result
S320
Hexadecimal
0x39
Channel A :
• Activated
•
Meter different than gas
•
Tamper input activated
Channel B :
• Activated
•
Gas meter
•
Tamper input deactivated
S301
Decimal
2
Sending every 4 historisations (saving)
S321
Decimal
1800
Historisation of the channel A and chan-
nel B index every hours (1800x2seconds
= 60 minutes)
S322
Hexadecimal
0x57
Anti-rebound :
•
Channel A = 500ms
•
Channel B = 100ms
S340
Decimal
4
4 redundant data per frame
In this example:
• 1 historisation of the index each hours (1800x2seconds = 60 minutes)
• 1 sending every 2 savings so every 2 hours
• The 2 channel of the product are activated so the 2 periodic frame are sent (0x5A et 0x5B)
• When it is possible, the product will send for each channel the 2 recent index and the last 4 index
memorized
Time
Historisation/
Saving
Frame 1
Frame 2
Frame 3
Frame 4
Frame 5
Frame 6
Frame 7
1h 2h 3h 4h 5h 6h 7h 8h 9h 10h 11h 12h 13h 14h 15h
New index
Index memorized
