Technical data

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 or web server
OZW772
Source
Description
Value of DP "Cause"
Local operation
via operating
mode button
• Operating mode is not Auto Timer
• No time schedule via bus
Room operating mode selector
(preselection)
• Temporary Comfort extension is active
Timer function
• Operating mode switchover contact (RDF301..)
Room operating mode contact
• Window contact (RDF600KN)
1)
Window switch
• Presence detector (RDF600KN)
1)
Presence detector
Bus command
KNX
R
Room op. mode
• "Window state" sent via bus (RDF301….)
Room operating mode contact
• "Window state" sent via bus (RDF600KN)
1)
Window switch
• "Presence detector" sent via bus (RDF600KN)
1)
Presence detector
• Time schedule available via bus

local operating mode is set to Auto Timer
• Time schedule sends Protection mode via bus
 operating mode cannot be changed locally
Time switch
1) RDF600KN SW version < V1.8 works like RDF301… with the operating mode
switchover contact.
The following table shows the priorities of different interventions.
A lower number means a higher priority.
Priority
Description
Remark

Commissioning
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 via bus
from time schedule
Protection mode, sent by a time schedule, has priority 2.
It cannot be overridden by the user nor by an operating mode
switchover contact.

Operating mode
switchover contact
(RDF301…)
If the contact is closed, the operating mode changes to
Economy. This overrides the operating mode on the thermostat.

Window contact
(RDF600KN)
1)
If the contact is closed, the operating mode changes to
Protection. This overrides the operating mode on the
thermostat.

"Window state" via bus
"Window state" sent via bus has the same effect as the local
operating mode switchover contact (on RDF301…) or local
window contact (on RDF600KN).
Note: Only one input source must be used, either local input
X1/X2 or KNX bus.

Presence detector
(RDF600KN)
1)
If the contact is closed (room occupied), the operating mode
changes to Comfort. This overrides the operating mode on the
thermostat. Open the contact (room unoccupied) will set the
thermostat back to the previous operating mode.

Presence detector via
bus (on RDF600KN)
1)
"Presence detector" sent via bus has the same effect as the
local presence detector.

Operating mode button
The user can switch the operating mode using the operating
mode button.
Source for cha
nge of
operating mode
ACS
Priority of operating
mode interventions
15 / 92
Siemens RDF301, RDF301.50..., RDF600KN Basic documentation CE1P3171en
Building Technologies Functions 2014-05-23