Control Value - ABB i-bus KNX Product Manual

ABB i-bus KNX
3.3.4

Control value

© 2009 Busch-Jaeger Elektro GmbH – A Company of the ABB Group
Commissioning
No. Function
24 Control value heating
2 channel (4-pipe system)
This data item forms the 1-byte or 1-bit KNX object and can be sent only. This object is
the control value for heating. In fan coil systems with only one output channel it is the
"heating/cooling" object in which the internal allocation is controlled by the external operating
mode switching (see index 6).
When acting as a branch the control value is received via this object.
25 Control value cooling
This data item forms the 1-byte or 1-bit KNX object and can be sent only. This object is
the control value for cooling.
This object is used with 2 channels (4-pipe system) only.
When acting as a branch the control value is received via this object.
26 Contr. value add. heat.
stage
This data item forms the 1-byte or 1-bit KNX object and can be sent only. This object is
the control value for the heating additional stage (switching or quasi continuous).
27 Contr. value add. cool.
stage
This data item forms the 1-byte or 1-bit KNX object and can be sent only. This object is
the control value for the cooling additional stage (switching or quasi continuous).
28 Status heat requirement
This data item acts as an output and provides information on whether the cooling output is
currently enabled (including in the switched-off phases of a PWM cycle). This information
can be useful for visualisation.
29 Status cooling
requirement
This data item acts as an output and provides information on whether the cooling output is
currently enabled (including in the switched-off phases of a PWM cycle). This information
can be useful for visualisation.
Object name Data type
Control value 1 byte /
1 bit
Control value 1 byte /
1 bit
Control value 1 byte /
1 bit
Control value 1 byte /
1 bit
Control value 1 bit
Control value 1 bit
Flags
K, Ü, L
K, Ü, L
K, Ü, L
K, Ü, L
K, S, Ü,
L
K, S, Ü,
L
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