Art. No. SC 1000 KNX
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The brightness measured values 1...3, the measured value for the maximum brightness
and the twilight measured value must be transmitted to the device via the bus in the format
"lux" in compliance with KNX DPT 9.004. The brightness measured values 1...3 and the
measured value for the maximum brightness are converted by the device so that these
measured values are displayed in "kLux".
The measured value of the wind speed must be made available to the device via the bus in
"m/s" in compliance with KNX DPT 9.005. According to the parameter setting of the
measured value, a conversion and display in the formats "m/s", "km/h" or "Bft (Beaufort)"
takes place if necessary.
The device expects the measured value for the outdoor temperature in "°C" in compliance
with KNX DPT 9.001. A conversion and display in the formats "°C" or "°F" according to the
parameter setting of the measured value also takes place here if necessary.
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The measured values for the sun status (Azimuth and elevation angle) can only be enabled
in the ETS for common display.
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The 1-bit telegram polarity for the rain signal is predefined: "0" = no rain, "1" = rain.
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The measured values for the sun status ("Azimuth", "Altitude") and for the rain situation
("Rain") always have fixed names.
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The display formats of the external values 1...4 (gain, offset, and by the number of places
before and after the decimal point) can be adapted. The external values have no symbol in
the display.
The device uses up to 7 KNX channels to be able to receive all measured values via the bus.
For this reason, the choice of available KNX channels is reduced by 7 channels if a display
function for the weather station is enabled. If the weather station display page is not configured,
a maximum of 30 KNX channels are available for general configuration. If, however, there is a
weather station display page, only 23 KNX channels are freely available.
Limiting values
Many KNX weather stations make it possible to carry out a limiting value evaluation of the
determined measured values. It is therefore possible, for example, to evaluate a twilight
threshold by a limiting value evaluation of the twilight measured value or to monitor brightness
or temperature measured values for safety limits. If a weather station is present in the KNX
system, the display function for the weather station can evaluate limiting value telegrams which
transmits their measured values to the device and also assesses limiting values and transmits
in the form of 1-bit telegrams to the bus.
Each 2-byte measured value transmitted to the device for the purpose of display on the weather
station page can be assigned to a limiting value. For this purpose, each of these measured
values has an additional 1-bit limiting value object. The display of the measured values is
influenced by these limiting value objects. If a limiting value telegram is received, the device on
the display page of the weather station marks the corresponding element in red (figure 59). This
indicates to the user when viewing these measured values that a limiting value has been
influenced as a result of the measured value having been exceeded or fallen short of.
The display element concerned remain coloured until the influence by the limiting value is
removed again.
The telegram polarity of the limiting value objects is predefined: "0" = limiting value inactive,
"1" = limiting value active.
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The measured values for the sun status (Azimuth and Elevation) and precipitation have no
limiting value evaluation.
Page 126 of 347
Software "Smart Control 501511"
Functional description
