Gira 5110 00 Product Documentation page 20

i In combined operation, the repeater function is executed parallel to the media coupler
function (routing). The device acts as if the media coupler and the repeater were two
separate devices in the same housing and shared the same RF transmitter.
i The integrated repeater does not repeat telegrams which are forwarded to the RF side by
the media coupler function and transmitted there.
- Function as a repeater alone:
The device has a physical address in the form x.y.1...255. In this case, the media coupler
function is completely switched off. The device does not perform any routing and thus does
not have any parameters for configuring filter properties. The parameter "Physical address
of the device" must be configured to "x.y.1...255 (RF repeater)".
The operation of one or more repeaters is recommended when the range of the RF domain
should be deliberately extended in one or more directions (e.g. in trans-property
communication), or when a part of a building (e.g. ceilings, walls, metal constructions)
which weakens the signal need to be overcome.
Repeaters can be positioned around the media coupler in a star formation (Figure 6),
ideally within the radio ranges of other/adjacent repeaters of the same RF domain, or also
oriented in a strand configuration (Figure 7), e.g for overcoming greater distances in a
deliberate direction.
i Using a maximum 2 repeaters in one RF domain (see application examples) is
recommended to prevent communication problems due to forwarded telegrams.
Communication problems due to forwarded telegrams can occur when repeaters are not
positioned to each other within their own reception area, but still affect identical devices
(e.g. hand-held transmitters) in the same RF domain independently of each other. In this
case, therefore, the radio ranges of the repeaters overlap for some RF devices, but not at
the installation location of the repeater. If only two repeaters are used in one RF domain,
the likelihood of communication problems due to repeated telegrams is reduced.
The ETS permits integration of up to 255 repeaters in one domain. Nonetheless, because
of the RF data protocol, one RF telegram can only be forwarded a maximum of six times.
Thus, use of more than 2 repeaters in one RF domain would be possible in principle.
i After the physical address is programmed, a repeater can no longer be reached directly via
the ETS, because the TP transponder of the device is switched off. This feature is
necessary because from a topological standpoint, a repeater (without media coupler
function) is exclusively assigned to the RF line, and no longer to a TP line. As a result,
further programming operations using the ETS can no longer be executed on the TP side
without the media coupler. Direct access to the device via the TP side is only possible
again when the device is reset to delivery state (see page 27).
Further information on commissioning is available in the chapter "Commissioning" in this
documentation (see page 9).
Order No. 5110 00
Software "Media coupler / repeater"
Functional description
Page 20 of 57