EN
WMBus Smart Building MOTION - Guide utilisateur / User guide version V1.0.0
56
Page
of 82
FR
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.:
Registre
Codage de la valeur
Valeur
Résultat
S301
Decimal
0
Event mode (no periodicity)
S321
Decimal
300
One poll every 10 minutes (300/60 sec x 2)
S340
Decimal
1
Alarm type for low threshold
S343
Decimal
20
Brightness rate at 20%
S344
Decimal
5
Hysteresis at 5% above the low threshold of 25%
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.
Period of
acquisition
reached?
Send frame 0x50
Product in standby
YES
High alarm
off?
Value
< (high
threshold -)
Low alarm
off?
Value >+
(low thresh-
old +)
Value >
High thresh-
old
Value <
Low thresh-
old
High alarm off
High alarm on
Low alarm on
Low alarm off
YES
YES
YES
YES
YES
YES
NO
No
NO
Mesure of brightness
rate
