Different Ways To Influence The Operating Mode - Siemens RDU341 Basic Documentation

Source for change of
operating mode
ACS
Source Description
· Operating mode is not Auto Timer
Local operation
· No time schedule via bus
via operating
· Temporary Comfort extension is active
mode button
· Operating mode switchover contact
· "Window state" sent via bus
Bus command
· Time schedule available via bus
K NX
R
Room op. mode
· Time schedule sends Protection mode via bus
Priority of operating
mode interventions
Priority Description

Commissioning
‚
Protection mode via bus
from time schedule
ƒ
Operating mode
switchover contact
ƒ
"Window state" via bus
„
a Operating mode button
„
b Operating mode via bus The operating mode can be changed via bus
„
c
Temporary extended
Comfort mode via
operating mode button
…
Time schedule via bus
14 / 68
Siemens
Building Technologies
3.2.1

Different ways to influence the operating mode

The operating mode can be influenced by different interventions.
The source of the effective room operating mode state can be monitored using the
"Cause" diagnostic data point in the ACS tool, operator unit RMZ792-B or web
server OZW772.
à local operating mode is set to Auto Timer
à operating mode cannot be changed locally
The following table shows the priorities of different interventions.
A lower number means a higher priority.
Remark
In parameter setting mode (highest priority), you can always
command an operating mode independent of all other settings or
intervention via bus and local input.
Protection mode, sent by a time schedule, has priority 2.
It cannot be overridden by the user nor by an operating mode
switchover contact.
If the contact is closed, the operating mode changes to Economy.
This overrides the operating mode on the thermostat.
"Window state" sent via bus has the same effect as the operating
mode switchover contact.
Note: Only one input source must be used, either local input
X1/X2 or KNX bus.
The user can switch the operating mode using the operating
mode button.
The operating mode can be temporarily set from Economy to
Comfort by pressing the operating mode button, if...
– Economy was sent via bus
– extended Comfort period >0 (parameter P68)
The last intervention wins, either locally or via bus
The operating mode sent via bus can be overridden by all other
interventions. Exception: Protection mode has priority 2.
RDU341 Basic Documentation
Value of DP "Cause"
Room operating mode selector
(preselection)
"Timer" function
Room operating mode contact
Room operating mode contact
Time switch
CE1P3172en
2015-06-08