ABB i-bus KNX Product Manual page 9

3.3.2 D escription of the objects
2 6 B
•
Object 0 "Basic set value" / "Manual set value shift"
This object can carry out 2 different functions.
This means that, depending on the
new set temperature can be specified or the current set temperature can be shifted
by a specific value
Parameter: Function of the setting
wheel
Manual shift for internal controller
blocked, but basic object set value
present
Basic set value for internal controller
blocked, but man. shift object
present
Manual shift with message object
• Object 1 "current set value"
This object sends the current set temperature as EIS 5 telegram (2 byte) to the bus.
The set process can be set on the parameter page
p arameter settings on the setting wheel
H U
Function of the object
Set required temperature:
The b asic set value
H U
time during commissioning via the application
and stored in the basic set value object.
It can then be re-set at any time via object 0
(limited by the minimum or maximum valid set
value).
In the event of a bus voltage failure, this object
is protected; when the bus voltage returns, the
last value is restored. The object can be written
to any number of times.
S hift set temperature
H U
The object receives a temperature difference in
EIS 5 format. This difference can be used to
change the required room temperature (current
set value) from the basic set value.
In comfort mode (heating), the following
applies:
current set value (obj. 1) = basic set value
(setting wheel) + manual set value shift (obj. 0)
Values outside the parameterised range (see
M ax. set value shift on the setting wheel
H U
limited to the maximum or minimum value.
Note:
The shift always relates to the basic set value
and not the c urrent set value
H U
Object 0 sends the shift set on the setting
wheel on a Fan Coil actuator.
S et values
H U
, either a
U H
is specified for the first
U H
:
U H
.
U H
.
U H
) are
U H
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