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24 MarathonSeriesFA/FR
5.8InstallingofMultipleSensorsinaNetwork
5.8.1Wiring
Foraninstallationoftwoormoresensorsinanetwork,eachsensorcableiswiredtoitsownterminal
block.TheRS485terminalsoneachterminalblockarewiredinparallel.
Thefollowingfigureillustratesthewiringofsensorsina4‐wiremultidropinstallation.Anetworkasa
2
‐wiremultidropinstallationistorealizeaccordingtoFigure19,p.23.
Figure21:4‐WireMultidropWiringinaNetwork
5.8.2Addressing
TheaddressingofasensorcanbedonebymeansoftheMultidropSoftware(Menu<SensorSetup>)
thatcamewithyoursensor.Asalternativethespecificinterfacecommandsofthesensorcanbeused
in conjunction with a standard terminal program (e.g. Windows HyperTerminal), see section
9.5
CommandList,p.42.
If you are installing two or more sensors in a multi‐drop configuration, please be aware of the
following:
• Eachsensormusthaveauniqueaddress.
• Eachsensormustbesettothesamebaudrate.
Elektronikbox
RS232/485
Interface Converter
XXX485CVT…
9 VDC or ...
from RxB
from RxA
from TxB
from TxA
Ground
+24 VDC
Terminal Block
Electronics Housin
g
24 VDC power suppl
y
from additional terminal block
of another sensor
RxB RxA TxB TxA