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Siemens
RXB (KNX) Applications library
CLC and RAD description of functions for CC-02 CM110384en_03
Building Technologies
Master/slave
28 Feb 2009
9.3
Peripheral functions
The room controllers or room units can be configured as master or slave. A number of
rules must be adhered to in this process.
If more than one room unit is used in a master/slave configuration, only room units may
be used with a button for setpoint shift. In the case of room units with a mechanical
setpoint shift, only one room unit may be connected (combining room units with
mechanical setpoint shift and room units with buttons for setpoint shift is not allowed).
•
Room unit with button
setpoint shift (several
room units allowed).
RXB...
RXB...
103
85Z2
3
QAX34.1
Master
Slave
KNX / EIB
QAX34.1
•
Room unit with
mechanical setpoint shift
(only one room unit
allowed).
QAX31.1,
QAX33.1
RXB...
RXB...
Master
Slave
KNX / EIB
103
85Z2
4
-
+
Auto
If the room unit is connected to the building automation and control system via room
controller and is controlled via the bus with
Setpoint shift heating/cooling
room unit with mechanical setpoint shift CANNOT be used.
•
Use of more than one
room unit with a
mechanical setpoint shift.
RXB...
RXB...
-
+
Auto
QAX33.1
Master
Slave
KNX / EIB
-
+
Auto
QAX33.1
103
85Z2
5
•
Combination of room
units with mechanical
setpoint shift and room
units with buttons for
setpoint shift.
RXB...
RXB...
-
+
Auto
QAX33.1
Master
Slave
KNX / EIB
QAX34.1
103
85Z2
6
Room units in
master/slave
configurations
Permissible combinations
STOP
Caution
Prohibited combinations