7
Communication objects
The following communication objects can be selected:
Per channel:
Function
Object name
Type
Prio
Flags
Behaviour
Channel X
Switch object
1 bit
Low
CW
Receive
Parameters
Per channel: Set the required relay operation mode.
Channel X: General
Parameter
Setting
Relay operation
make contact
break contact
changeover contact
flash for ON
flash for OFF
- Central switching function
The central switching function has its own communication
object (1 bit central object) It can be set for each channel of
the actuator whether and how the channel should react to
the central switch object.
Using the parameters, you can set whether only the state
“actuated” (make contact => closed and break contact =>
opened), only the state “not actuated” or both states of the
central switch object for the channel should be evaluated.
The central function has a low priority. Telegrams from
the central switch objects activate the set switching/time
functions and higher priority functions in the same way as
telegrams from the corresponding switch object.
The last telegram from the individual switch object or the
central object always activates the functions that have been
set for the channel.
Communication objects
The following communication objects can be selected:
Common for all channels
Function
Object name
Type
Prio
Flags Behaviour
Central
function
Central object
1 bit
Low
CW
Receive
Parameters
Switch on the central switching function (active).
Central function
Parameter
Setting
Central function is
active
not active
Switching functions
- Switching
Binary bus telegrams (EIS1 telegrams, 1 bit) are received via the
“Switch object” and converted into switching states (relay open/
relay closed). The application changes the value of the “Switch
object” during operation. Reading out the “Switch object” via
the bus does not convey the status of the relay. The status
should always be read out via the “Status feedback object”.
L
L
The switching behaviour of the normal switch func-
tion can be modified by activating functions with a
higher priority (see ‘Priorities’).
Switch (make function)
Switch (break function)
After bus voltage recovery, the relay is closed in the “break
contact” mode and a status response telegram is generated
with the value “1” if the status response function is activat-
ed. In this case, a different response is carried out e.g. by
a higher priority function or due to the behaviour on bus
voltage recovery at the output.
Before triggering the relay, a check is made to determine
whether there is sufficient energy to operate the relay. If
there is sufficient energy, the relay immediately switches
to the parameterised state. Otherwise there is a delay until
sufficient energy is available.
The fixed relay positions (open, closed) within the other
functions are triggered directly. An inversion by the break
contact function is not carried out for fixed relay positions.
open
t
t
1
0
remains
open
is
closed
KNX
telegram
Relay status
closed
Relay status
closed
t
remains
closed
is
opened
open
t
1
0
KNX
telegram
Switching on
Switching off
t
1
0
t=0
KNX
telegram,
logic operation
ON
OFF
t
1
0
KNX
telegram,
switching
1
0
1
0
t
t
Status
actuated
not actuated
