Periodical Transmission With Redundancy - ADEUNIS TEMP V3 LoRaWAN 863 Guide Utilisateur

TEMP V3 LoRaWAN 863-870 - Guide utilisateur / User guide version V3.0.0

2.2.2 Periodical transmission with redundancy

The product enables to add redundancy in the frame sent (cf diagram bellow). Thanks to the redundancy the product will save samples locally in
order to resend them in the next frame.
Parameters associated to this mode:
• Sampling period (register 321), historisation frequency (register 320) and transmission frequency (register 301)
FR
• Activation of the probes (register 324).
• Number of samples to be repeated from a frame to another (register 323).
When redundancy is activated, the frame will contain the number of bytes corresponding to the total number of samples, so S301+S323. At the
start-up of the product, bytes assigned to the redundant samples will be filled with zeros as long as there is no memorized samples.
Example with redundancy:
EN
Register Encoding
S321 Decimal
S320 Decimal
S301 Decimal
S324 Decimal
S323 Decimal
In this example:
• A sample (reading) every hours (1800 x 2 seconds = 60 minutes)
• A historisation at each sampling
• A transmission done every 2 historisations (so every 2 hours)
• 2 probes are activated
• The product will send 2 new samples measured every hour and 4 memorized samples.
New samples
Samples memorized
Value Result
A sample every hour
1800
(1800 x 2 seconds = 60 minutes)
1 1 historisation at each sampling
2 1 transmission every 2 historisations
3 The 2 probes are activated
4 4 samples are repeated in each frame
Historisation/
Saving
Transmission
1h 2h 3h 4h
Frame 1
Frame 2
Frame 3
Frame 4
Frame 5
Frame 6
Frame 7
5h 6h 7h 8h 9h 10h 11h 12h 13h 14h 15h
Time
44 of 51