User's Manual

File : CS-SUP-MUTI-WTHERMAPP-E01.sxw
7.6.5 Selection of the threshold detection modes, and activation of the detection
The threshold detection modes are selected by positionning the bit b6 of the Operating Mode byte. By default,
the successive mode is selected.
The threshold detection is activated by positioning the bit b4, or b5 of the Operating Mode byte.
➢ Operating Mode byte:
MSB LSB
Operanting Mode
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
-
Threshold
Detection Mode
0 : successive mode
1 : cumulative mode
Low Threshold
Detection
0 : deactivated
1 : activated
High Threshold
Detection
0 : deactivated
1 : activated
Datalogging
00 : deactivated
01 : time steps
10 : once a week
11 : once a month
Stop Mode of the
Datalogging
0 : permanent loop
1 : stop memory full
-
The parameters relative to the threshold detection management must be configured before
activating the detection.
7.6.6 Configuration of the measurement period of the threshold detection
Threshold alarm detection requires periodic measurement of the temperature for a predefined period. The
value of this period enables establishment of the threshold alarm detection reactivity.
The measurement period is configured via a write command of the parameter 0x23 ; and its value is
expressed in multiples of minutes.
After adjusting the measurement period, the WaveTherm module will measure the temperature, in order to
compare it with the preset thresholds. This measurement is independent of the datalogging measurement.
for power saving reasons, it is recommendable to set the datalogging period as a multiple of the threshold
alarm detection period (if the datalogging is set in time steps).
Attention, the threshold detection will be deactivated if the measurement period is set to 0.
WaveTherm modules – application handbook page 59 of 65