KNX GIRA 5110 00, Руководство пользователя

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Function | Function as media coupler
RF/TP media coupler/repeater | Order no. 5110 00 | 51103300 Page 17 of 42
8 Function
8.1
Function as media coupler
Backbone coupler, line coupler or segment coupler
A media coupler, depending on the physical address, can either be added to the KNX
topology as a backbone coupler, as a line coupler or, alternatively, as a segment
coupler. The segment coupler functionality is supported from ETS version 6.0.5. With
KNX RF, there is generally no physical limitation of the number of possible bus sub-
scribers as in a TP line (e.g. 64). With KNX RF, the number of subscribers is only lim-
ited by the physical addresses assigned in the ETS.
Media coupler as backbone coupler
The media coupler has a physical address in the form x.0.0 (x = TP area address /
e.g. "1.0.0").
If a media coupler is used as a backbone coupler, then a total of up to 4,081 RF
devices (including media couplers) can be integrated into the appropriate area. The
RF devices must then divide themselves up on the backbone line itself and on up to
15 additional subordinate RF lines (see figure 2). In the ETS, a maximum of 255 sub-
scribers may exist for each area or line. If the media coupler is a backbone coupler,
then the backbone must possess the media type "TP". A KNX IP environment cannot
then be implemented (the ETS prevents such a topology)!
Even in an RF area, there may only be one media coupler (subordinate RF
lines do not possess their own media coupler).
Subordinate RF lines of an RF area always have the same domain address as
the area itself.