Siemens Desigo RXB Technical Manual page 260

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Siemens
Building Technologies
Refr. distribution zone
cooling coil
Zone = ---, 1...31
Outside air temperature
zone
Zone = ---, 1...31
Master/slave zone
(Apartment . Room Subzone)
Apartment = ---, 1...126
Room = ---, 0...63
Subzone =---, 0...15
Select Communication.
RXB (KNX) application library
Select communication mode
Information related specifically to the chilled water
system is exchanged within this zone (e.g. cooling
demand). This zone also includes a Synco device to
process the information (e.g. RMU7xx).
The outside air temperature (all Synco devices of series
700) is exchanged in this zone.
In cases where RXB controllers are to be operated in
master/slave mode, a master/slave zone must also be
defined. For the master, it is usual to enter the
"geographical" zone of the master. The same
master/slave zone is used for the slave as for the
master.
See also "Master/slave", page 117.
FNC Description of functions for FC-10, FC-11, FC-12 CM110385en_05
28 Feb 2009