Transmission On Overpassed Threshold And Alarm Repetition - ADEUNIS LoRaWAN COMFORT CO2 Guide Utilisateur

LoRaWAN COMFORT CO2 - Guide utilisateur / User guide version V1.1.1

2.7.4 Transmission on overpassed threshold and alarm repetition

If the feature is activated, the device can repeat a threshold alarm until it measures a data outside the alarm range. The frequency of the repeti-
tion is configured by the user (registers S321 x S322).
Product in standby
Sampling
period
reached
?
Yes
Measure T+H+CO2
Threshold over-
passed
?
Yes
Send frame 0x6B*
Alarm
repetition
activated
?
Yes
Repetition of the
0X6B frame every
S321 x S322
Turn back to
normal ?
Yes
Send frame 0x6B*
The linked parameters are:
• The sampling period (S321),
• The alarm repetition (S322),
• The thresholds for temperature (S330 to S334),
No
• The thresholds for humidity (S340 to S344),
• The thresholds for CO2 concentration (S350 to S354).
Example:
Register Encoding
value
S301 Decimal
S321 Decimal
S322 Decimal
No
S330 Decimal
S333 Decimal
S334 Decimal
S340 Decimal
S341 Decimal
S342 Decimal
S350 Decimal
S353 Decimal
No
S354 Decimal
In this example :
• The product measures the temperature, the humidity and the CO2 concentration every
10 minutes.
• The product send an alarm f the temperature is lower than 20°C or if the relative hu-
midity overpass the 65% or if the CO2 concentration is higher than 1300 ppm.
• If the alarm is still active (a threshold is overpassed), the device repeat the alarm every
2 sampling (every 20 minutes).
• The device will send an return to normal alarm if the temperature is higher than 21°C,
or if the humidity is lower than 60% or if the CO2 concentration is lower than 1270 ppm.
No
*The «alarm status» byte gives the information about if the alarm is active or inactive for
each sensor (temperature, humidity or CO2) and allows to dissociate a 0x6B frame when
the alarm start from a 0x6B frame when it comes back to normal.
Value Result
0 Event mode
A sampling every 10 minutes (300 x 2
300
seconds = 10 minutes)
Alarm repeated every 2 sampling if still
2
active
1 Low threshold for temperature activated
200 Low threshold at 20°C
10 Hysteresis of 1°C
2 High threshold for humidity activated
65 High threshold at 65%
5 Hysteresis of 5%
1 CO2 alarm activated
1300 Threshold at 1300 ppm
30 Hysteresis of 30 ppm
FR
EN
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