Westermo ODW-630-F2 - Manual (Page 10)

10 6651-22651
Multidrop via fibre optical network
The data is transferred via the fibre optic network to the serial ports of all units. If
ODW-630-F2 is connected to two optical fibre links (mid unit) converted data will be
transmitted in both directions, via both CH 1 and CH 2. With only one optical fibre link
(end unit) converted data will be transmitted in one direction, via CH 1 only.
Data received from one ODW-630-F2 optical fibre port will be repeated through the
other optical fibre port and it will also convert the frame to serial data.
TX RX TX RX TX RX TX RX TX RX TX RX TX RX TX RX
CH 2 CH 1 CH 2 CH 1
Master, unit
M
Slave, unit
S
CH 2 CH 1 CH 2 CH 1
PLC PLC