LON • 99
Modular I/O System
L
ON
W
ORKS
®
this limitation, not even when configured as a repeater. Please also remember
that the transceivers of the routers/repeaters must also be counted as part of
the 64 node limitation.
Fig. 4-2. Examples for network topology
4.3.3 Transceiver
The FTT-10 transceiver (Free-Topology Transceiver) used as standard in the
LON coupler is compatible with the LPT-10 transceivers (Link-Power Trans-
ceiver). As such, there are further possibilities to be used for a network archi-
tecture.
With the FFT-10, a network with a data rate of 78 kbps, a number of nodes of
64, and a distance of 2700 m is possible with the bus topology and of 500 m
with the Free Topology.
Isolation
transformator coupled
Bitrate
78 kbps
Nodes
≤
64 (0 ... 70°C
Applicable with the simultaneous use of FTT-10- and LPT-10-transceivers segment is: (2x
number of FTT-10) + (1x number of LPT-10) must be smaller or equal to 128.
Tab. 4-1: Characteristic data for Transceiver FTT-10