Westermo ODW-730-F2 - Manual (Page 16)

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RX2
TX2
Device 1
Sending
Device 2
Receiving
Device 3
Reciving
Device 4
Receiving
TX1
RX1
RX2
TX2
TX1
RX1
RX2
TX2
RS-485 RS-485 RS-485
Fibre
pair
Faulty
segment
Fibre
pair
Focal point
RS-485
TX1
RX1
RX2
TX2
TX1
RX1
PWR
FP
TD
RD
PWR
FP
TD
RD
PWR
FP
TD
RD
PWR
FP
TD
RD
If an optical fibre segment fails, the ODW-730 Ring Focal Point will switch mode and
start sending out data on both optical fibre ports, TX1 and TX2, simultaneously.
RX2
TX2
Device 1
Receiving
Device 2
Receiving
Device 3
Reciving
Device 4
Sending
TX1
RX1
RX2
TX2
TX1
RX1
RX2
TX2
RS-485 RS-485 RS-485
Fibre
pair
Faulty
segment
Fibre
pair
Focal point
RS-485
TX1
RX1
RX2
TX2
TX1
RX1
PWR
FP
TD
RD
PWR
FP
TD
RD
PWR
FP
TD
RD
PWR
FP
TD
RD
The other ODW-730 units will continue to send data out on both optical fibres TX1
and TX2. Consequently, all communication devices will still be able to communicate with
each other. Notice that the Ring Focal Point is now repeating incoming data.