Different Ways To Influence The Operating Mode - Siemens RDF302 Documentation

Priority of operating
mode interventions
Availability of Economy
mode
Operating mode
switchover contact
(window contact)
Room operating mode:
Window State
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Siemens
Building Technologies
3.2.1

Different ways to influence the operating mode

The operating mode can be influenced by different interventions. The table below
shows the priorities of different interventions. (i.e. lower number higher priority)
Priority Description

Commissioning

Operating mode
switchover
contact

"Window state"
via Modbus
Note: Only one input source must be used, either local input X1/X2 or
Modbus.

Operating mode
via Modbus

Operating mode
button
Note: Higher priority commands can override the lower priority's
command. If operating mode is set via Modbus, the unit will indicate by
flashing "OFF" when OpMode button pressed by users.
The operating mode can be selected locally via the operating mode button.
The behavior of the operating mode button (user profile) can be defined via
parameter P02, factory setting is P02 = 1.
P02 Without time
schedule
1 
2  
The thermostat can be forced into Economy mode (e.g. when a window is opened,
when a presence detector signals "no one present", when the keycard of a hotel
room is withdrawn, etc). The contact can be connected to multifunctional input X1,
X2. Set parameter P38, P40 to 3.
The function is also available via the Modbus signal "Window state",
Note: Only one input source must be used, either local input X1/X2 or Modbus.
User operations are ineffective and "OFF" is displayed if the operating mode
switchover contact is active, or if "WindowContact" is sent via Modbus.
RDF302 Basic documentation
Functions
Remark
In parameter setting mode (highest priority), you can
always command an operating mode independent of
all other settings or intervention via Modbus and
local input.
If P02 changed by Modbus, the operating mode will
jump to Protection mode, in all cases, after the
update.
If the contact is closed, the operating mode changes
to Economy. This overrides the operating mode on
the thermostat.
"Window state" sent via Modbus has the same effect
as the operating mode switchover contact.
The operating mode can be changed via Modbus
Note: Operating mode button is disabled if Protection
mode is commanded via Modbus.
The user can switch the operating mode via the
operating mode button unless a Button lock
command received from the Modbus before.
Description
 Switching manually between 2 modes, Economy
is not available (factory setting)
 Suited for hotel guest rooms or commercial
buildings.
 Switching manually between 3 modes
 Suited for homes and rooms where manual
switching to Economy mode is desired
CE1P3079en
07 Dec 20111