Operating Instructions

Table Of Contents
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Siemens RXB (KNX) application library RXB Description of functions for FC-10, FC-11, FC-12, FC-13 CM110385en_08
Building Technologies Master/slave 2013-06-17
10.4 Peripheral functions
The room controllers and room units can be configured as master or slave devices. A
number of rules must be adhered to in this process.
When more than one room unit is used in a master/slave configuration, all such room
units must be of the type with a button for setpoint adjustment. In the case of room units
with a mechanical setpoint adjuster, only one room unit may be connected. (Room
units with mechanical setpoint adjusters and those with pushbuttons for setpoint
adjustment must not be combined.)
Room units with
pushbutton setpoint
adjustment (more than
one of this type allowed)
RXB... RXB...
10385Z23
QAX34.1
Master
Slave
KNX / EIB
QAX34.1
Room units with a
mechanical setpoint
adjustment (only one unit
of this type allowed)
QAX31.1,
QAX33.1
RXB... RXB...
Master Slave
KNX / EIB
10385Z24
-
+
Auto
Room units with a mechanical setpoint adjuster must NOT be used in configurations
where the room unit is connected via the room controller to a building automation
system and controlled via bus by Setpoint shift for heating / cooling (see page 73).
Do not use more than one
room unit with a
mechanical setpoint
adjuster
RXB... RXB...
-
+
Auto
QAX33.1
Master Slave
KNX / EIB
-
+
Auto
QAX33.1
10385Z25
Do not combine room
units with mechanical
setpoint adjusters and
room units with push-
buttons for setpoint
adjustment.
RXB... RXB...
-
+
Auto
QAX33.1
Master Slave
KNX / EIB
QAX34.1
10385Z26
Room units in master /
slave configurations
Permissible combinations
STOP
Caution
Prohibited combinations