User Manual

Functions
Operating modes
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4.2.1 Different ways to influence operating mode
Different interventions can influence the operating mode.
The source of the actual room operating mode state can be monitored using the
"Cause" diagnostic data point in the ACS tool or web server OZW772.
Source Description
Value of data point
“Cause”
Local
operation via
left button
● Operating mode is not Auto
● No time schedule via bus
Room operating mode
selector (preselection)
Temporary Comfort extension is
active
Timer function
Window contact Window switch
Presence detector Presence detector
Bus command
Room op.
mode
"Window contact" sent via bus Window switch
"Presence detector" sent via bus Presence detector
● Time schedule available via bus
– local operating mode is set to
Auto
● Time schedule sends Protection
mode via bus
– operating mode cannot be
changed locally
Time switch
The following table shows the priorities of different interventions.
A lower number means higher priority.
Priority Description Remark
① Commissioning
In parameter setting mode, you can always
command an operating mode independent of all
other settings or interventions via bus and local
input.
②
Protection mode via
bus from time
schedule
Protection mode, sent by a time schedule, cannot
be overridden by the user.
③ Window contact
If the contact is closed, the operating mode
changes to Protection. This overrides the
operating mode on the thermostat.
③
“Window contact”
via bus
"Window contact" sent via bus has the same effect
as the local window contact.
Note:
Only one input source must be used, either local
input X1/X2/U1or KNX bus.
Source for change of
operating mode
ACS
Priority of operating mode
interventions