Office Building Solution

BU I LDI NG SOLUT IONS

27

— Architecture and configuration of a KNX system

These simple communication rules together with the characteristics of the transmission medium constitute the architecture of the KNX system.

A general automation system and a KNX system in particular, are composed of a series of input/output devices connected to a shared transmission medium called BUS to which are added some system devices necessary for operation. Each device exchanges on the network a series of information containing datapoints, i.e. control and process variables that each device interprets. Datapoints can be inputs, outputs, parameters or diagnostic data.

By looking at the addressing rules and some electrical rules, the overall architecture shown in the figure is obtained for a KNX network.

Overall architecture of a KNX network (*) Each line is composed of 4 segments of 64 devices each, separated by a line coupler

PS

AREA 1

LC

AREA n

AREA 15

Main line

PS

LC

LC

LC

PS

PS

PS

DISP

DISP

DISP

PS

Coupler/Repeater

DISP

DISP

DISP

256

DISP

DISP

DISP

LC

Power supply

DISP

Device

DISP

DISP

DISP

Powered by