Sending On Exceeding Threshold - ADEUNIS LoRaWAN COMFORT CO2 Guide Utilisateur

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

2.7.2 Sending on exceeding threshold

The device allows detection of exceeding threshold (high and low) for each sensor according to the following schema:
The device sends a data frame when a threshold is exceeded but also when returning to normal.
FR
EN
Value
< (high
threshold -)
YES
High alarm off
E.g.:
Register Value encoding
S301 Decimal
S321 Decimal
S330 Decimal
S331 Decimal
S332 Decimal
S340 Decimal
In this example:
• The device takes temperature and humidity every 10 minutes
• The device will trigger an alarm if the temperature is above 24°C, no alarm indicated for humidity
• The alarm will be disabled if the temperature drops below 22°C
NOTE: As described previously it is possible to combine the periodic mode and the alarm mode.
YES
High alarm
already ON?
NO
Value >
High thresh-
old
YES
High alarm on
Value
0
300
2
240
20
0
Product in standby
Period of
No
acquisition
reached?
YES
Measure of tempera-
ture & humidity
Send frame 0x6B
Result
Event mode (no periodicity)
One reading every 10 minutes (300/60 sec x 2)
Alarm type for high threshold temperature
Temperature at + 24°C (240/10)
Hysteresis at 2°C (20/10) below the high threshold of 22°C
Humidity alarm off
YES
Low alarm
(low thresh-
already ON?
NO
Value <
Low thresh-
old
YES
Low alarm on Low alarm off
Value >+
old +)
YES
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