Page 52 - Basic Course

KNX BASIC COURSE

11 Internal line telegram

KNX

5/2/66 5/2/67
P1 5/2/66 L11 L21
0/2/11 0/2/11

P2 5/2/67 L12 5/2/66 L22 5/2/67

S1 0/2/11 L13 5/2/66 L23 5/2/67

Figure 11: Internal line telegram

Pressing push button P1 sends a telegram with the group address 5/2/66.

Although all bus devices listen in when the telegram is transmitted, only the actuators of
lamps L11, L12 and L13 with the same group address 5/2/66 execute the command.

If the brightness sensor sends the group address 0/2/11, all the bus devices on this line
listen in but only the actuators of the window lights L11 and L21 execute the command.

Home and Building Management Systems KNX Association
KNX TP Topology Topology_E1213a 13/24