Function | Function as media coupler
RF/TP media coupler/repeater | Order no. 5110 00 | 51103300
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Image 3: Example of a possible KNX topology with RF, TP and IP lines
Media coupler as line coupler
MC
Media coupler as line coupler (TP, RF)
LC
Line coupler (TP)
BC
Backbone coupler (as IP router / TP, IP)
PSU
Voltage supply (TP)
Media coupler as segment coupler
The segment coupler has a physical address in the form x.y.1...255 (x = TP area ad-
dress, y = TP line address / e.g. "1.1.47").
A KNX RF segment can contain up to 256 devices (including segment coupler)
(see figure 4). The segment coupler is connected to the first TP segment of the line.
There may only ever be one segment coupler in an RF segment.
With ETS version 6.0.5 or higher, the device can be used as a segment
coupler with the application program "Media coupler / repeater 902211".
It is not possible to create manual filter table entries in the ETS for RF seg-
ments. This means that no additional group addresses can be added to the
automatically calculated filter tables for lower-level segments. If devices for
which group addresses cannot be assigned with the ETS are used in the KNX
installation, dummy applications must therefore be used in the ETS project in
higher-level areas or lines. If dummy applications are used, the ETS can auto-
matically calculate the filter tables correctly.
