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Building Technologies
Basic documentation: Communication via the KNX bus
CE1P3127en
HVAC Products
Communication via zone addresses
30.08.2007
7.1.4
Default "----" in series B devices
The "Geographical zone (apartment)" represents the room to be controlled. Within
this zone, all process values relevant to the room are transmitted (e.g. room
operating mode, room setpoint and measured room value, plus user intervention
and other influences).
The factory-setting or default for the RM… series B controllers is "---". This default
value indicates that the zone is "out of service", i.e. no relevant process values are
transmitted within this zone.
Main menu > Commissioning > Communication > Room
Operating line
Range
Factory set ting or default
Geographical zone (apartm)
----, 1...126
----
Time switch slave(apartment)
----, 1...126
----
The factory-setting or default value "----" applies to all RM… series B controllers.
In the "Autonomous controller" application, a ventilation system is controlled
independently of other plant, according to its own room operating conditions.
For this application there is no need to set a zone address for the "geographical
zone (apartm)", i.e. the default "---" can be left unchanged.
Function "Time switch operation"
If the room occupancy times for various "geographical zones" are identical, one
controller can be defined as the time switch master.
The other controller or controllers act as slaves, and adopt the occupancy times in
the master.
RM..
RM..
Slave
Master
31
50
Z
0
7e
n
Time switch
Time switch
Ventilation 1
Heating circuit 2
Geogr zone =
1
Geogr zone = ----
TS slave (Apartm.) = ----
TS slave (Apartm.) =
1
With regard to room occupancy times, the "Heating circuit 2" controller is the slave
of the controller of "Ventilation 1", because the setting "Time sw. slave (apartm) =
1" means that time switch operation is adopted by "Geogr zone = 1" i.e. by the
controller of "Ventilation 1".
Introduction
Settings
Note
Autonomous controller
Two controllers with
identical room
occupancy times
Notes