ADEUNIS ARF8276A Guide Utilisateur page 59

LoRaWAN Smart Building MOTION - Guide utilisateur / User guide version V1.0.0
2.1.5.02 Transmission over brightness threshold
The device allows detection of exceeding threshold (high and low) for the brightness rate according to the following schema. The device sends a
data frame when a threshold is exceeded but also when returning to normal.
E.g.:
Value
< (high
threshold -)
YES
High alarm off
Register Value encoding
S301 Decimal
S321 Decimal
S340 Decimal
S343 Decimal
S344 Decimal
In this example:
• The device reads brightness rate every 10 minutes
• The device will sound an alarm if the brightness is below 20%
• The alarm will be disabled if the brightness drops below 25%
NOTE: As described in 2.1.5 it is possible to combine the periodic mode and the alarm mode.
NO
High alarm
off?
YES
Value >
High thresh-
old
YES
High alarm on
Value
0
300
1
20
5
Product in standby
Period of
No
acquisition
reached?
YES
Measure of brightness
rate
Send frame 0x50
Result
Event mode (no periodicity)
One poll every 10 minutes (300/60 sec x 2)
Alarm type for low threshold
Brightness rate at 20%
Hysteresis at 5% above the low threshold of 25%
NO
Low alarm
(low thresh-
off?
YES
Value <
Low thresh-
old
YES
Low alarm on Low alarm off
FR
EN
Value >+
old +)
YES
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