Installation
24
Marathon
Series
FA/FR
5.8
Installing
of
Multiple
Sensors
in
a
Network
5.8.1
Wiring
For
an
installation
of
two
or
more
sensors
in
a
network,
each
sensor
cable
is
wired
to
its
own
terminal
block.
The
RS485
terminals
on
each
terminal
block
are
wired
in
parallel.
The
following
figure
illustrates
the
wiring
of
sensors
in
a
4
‐
wire
multidrop
installation.
A
network
as
a
2
‐
wire
multidrop
installation
is
to
realize
according
to
Figure
19
,
p.
23.
Figure
21:
4
‐
Wire
Multidrop
Wiring
in
a
Network
5.8.2
Addressing
The
addressing
of
a
sensor
can
be
done
by
means
of
the
Multidrop
Software
(Menu
<Sensor
Setup>)
that
came
with
your
sensor.
As
alternative
the
specific
interface
commands
of
the
sensor
can
be
used
in
conjunction
with
a
standard
terminal
program
(e.g.
Windows
HyperTerminal),
see
section
9.5
Command
List
,
p.
42.
If
you
are
installing
two
or
more
sensors
in
a
multi
‐
drop
configuration,
please
be
aware
of
the
following:
•
Each
sensor
must
have
a
unique
address.
•
Each
sensor
must
be
set
to
the
same
baud
rate.
Elektronikbox
RS232/485
Interface Converter
XXX485CVT…
9 VDC or ...
from RxB
from RxA
from TxB
from TxA
Ground
+24 VDC
Terminal Block
Electronics Housing
24 VDC power supply
from additional terminal block
of another sensor
RxB RxA TxB TxA