Determine The Room Operating Mode Without A Bus (Stand-Alone) - Siemens Desigo RXB Technical Manual

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Siemens
Building Technologies
5.6
Determine the room operating mode without
a bus (stand-alone)
If no bus is connected, the Effective room operating mode of the room controller
depends on the local influences such as window contact, presence detector or room
unit.
The illustration below shows how these influences are processed by the room controller
along with their priority:
Local
Controller
Window contact
DI
Presence detector
DI
Room unit
PPS2
• The influence of priorities 1 and 2 is equivalent to permanent states .
• The influence of priority 3 is treated as event .
The key point in time is the moment at which the state changes (edge).
If another source of third priority later changes the state, the last known change is
valid .
If there is no bus connection, the controller assumes the following defaults:
• Use
= Building in use.
• Occupancy = Occupied.
RXB (KNX) Applications library
Room operating modes
Prio
1.
3.
3.
CLC and RAD description of functions for CC-02 CM110384en_03
28 Feb 2009

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Desigo rxc, desigo rxb, desigo rxl, desigo rxa

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