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Parameter setting
Sensor KNX AQS/TH-UP Touch
• Version: 23.10.2018 • Technical changes and errors excepted.
The
maximum reading
can be saved and sent to the bus. Using the "Reset CO2 max-
imum value" objects, the value can be reset to the current reading. The value is not re-
tained after a reset.
5.13. CO2 threshold values
Activate the required CO2 threshold value. The menus for setting the threshold values
are displayed.
300 ppm ... 1000 ppm: fresh air
1000 ppm ... 2000 ppm: used air
1000 ppm = 0.1 %
5.13.1. Threshold value 1, 2, 3, 4
Threshold value
Set, in which cases
threshold values and delay times
received via object are to be
retained. The parameter is only taken into consideration if the setting via object is ac-
tivated below. Please note that the setting "After power supply restoration and pro-
gramming" should not be used for the initial start-up, as the factory settings are always
used until the first communication (setting via objects is ignored).
Set the threshold value directly in the application program using parameters, or define
them via the bus using a communication object.
Threshold value setting using parameters:
Set the threshold values and hysteresis directly.
Threshold value setting using a communication object:
Define, how the threshold value will be received from the bus. Basically, a new value
can be received, or simply a command to increase or decrease.
Sending pattern for internal and total
measured value
• never
• periodically
• on change
• on change and periodically
At and above change of
(relative to the last measured value)
(if sent on change)
2% • 5% • ... • 50%
Send cycle
(if sent periodically)
5 s • 10 s • ... • 2 h
Use maximum value
No • Yes
Use threshold value 1/2/3/4
Yes • No
Threshold value setting using
Parameter
• Communication objects
Threshold value in ppm
0 … 5000; 1200