Periodical Transmission With Redundancy - ADEUNIS TEMP V4 IP68 LoRaWAN 863-870 Guide Utilisateur

TEMP V4 IP68 LoRaWAN 863-870 - Guide utilisateur / User guide version V3.1.1

2.4.2 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)
• 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:
Register Encoding Value
S321 Decimal 1800
S320 Decimal 1
S301 Decimal 2
S324 Decimal 3
S323 Decimal 4
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.
Historisation/
Frame 1
Frame 2
Frame 3
Frame 4
Frame 5
Frame 6
Frame 7
New samples
Samples memorized
Result
A sample every hour
(1800 x 2 seconds = 60 minutes)
1 historisation at each sampling
1 transmission every 2 historisations
The 2 probes are activated
4 samples are repeated in each frame
Saving
Transmission
1h 2h 3h 4h 5h 6h 7h 8h 9h 10h 11h 12h 13h 14h 15h
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EN
Time
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