Page 251 - Advanced Course

KNX ADVANCED COURSE

5.1.8 Linking Group Addresses – Partition Wall (Filter)

Two small meeting rooms should be separated by folding doors so that they can be
combined into a larger room. When the partition is closed, it must be possible to switch
and dim the lighting separately in the rooms. If the partition is open, the switch sensors at
the doors should control all the lighting in the respective areas of the room.

Partition Push button 1 switches/dims Push button 2 switches/dims

closed L 1 L 2

open L1 + L2 L 1 + L 2

Parameter setting for logic gate 1: Partition wall 1 bit
Operation mode of the gate: dependent on object ‘Activation/Block’
Function of object no. 2: ON = gate enabled
Direction of information flow: both directions
Filter function: ON and OFF

Parameter setting for logic gate 2: Partition wall 4 bit
Operation mode of the gate: dependent on object ‘Activation/Block’
Function of object no. 2: ON = gate enabled
Direction of information flow = both directions

The status of the folding door is queried with a microswitch and a binary input. It is
advisable to use a binary input which sends the status when the bus voltage is connected.
1 bit objects are used for switching. The application ‘Partition wall 1 bit’ is used for the 1
bit telegrams (‘Logic gate 1’ in the diagram).
4 bit objects are used for dimming. The application ‘Partition wall 4 bit’ is used for the 4 bit
telegrams (‘Logic gate 2’ in the diagram).

L 1 L 2 Partition
On/off Dimming On/off Dimming Open/closed

Grp. Addr. 1/1 1/2 1/3 1/4 1/10

Home and Building Management Systems KNX Association
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