Westermo ODW-622 User Manual
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Multidrop application
Follow the steps below to get the unit up and running in a simple application.
Prepare the units
Configure the network, with master and slaves. Check that it is running correctly with
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the electrical serial network.
Prepare the fibre optical network
Multidrop, mid units (CH 1 & CH 2). Set switch S2:2 to ON.
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Multidrop, end units (CH 1 only). All switches should be set to OFF.
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Connect the fibre links between the units.
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Connect the power supply to all units.
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• The Fibre links should be in operation, indicated by active CH 1 and CH 2 LED’s.
Connect each of the slaves to the serial port of the corresponding ODW-622.
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Connect the master to the port of one ODW-622
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The Multidrop application is up and running.
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Note! ODW-621 or ODW-631 can be used as end units.
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
TX
RX
CH 2
CH 1
CH 2
CH 1
CH 2
CH 1
CH 2
CH 1
PLC
Slave
PLC
Master
PLC
Slave
PLC
Slave