Programming
Guide
11.7
Multiple
Units
(Multidrop
Mode,
RS485)
Up
to
32
units
can
be
connected
within
a
RS485
network,
see
section
5.6
Installing
of
Multiple
Sensors
via
RS485
on
page
31.
To
direct
a
command
to
one
unit
among
the
32
possible,
it
is
necessary
to
„address“
a
command.
Therefore,
a
3
‐
digit
number
is
set
prior
the
command.
The
3
‐
digit
number
is
determined
between
001
and
032.
Exception:
Broadcast
command.
If
a
command
is
transferred,
starting
with
the
3
‐
digit
number
000,
all
units
(with
addresses
from
001
to
032)
connected
will
get
this
command
–
without
to
send
an
answer.
Note:
A
unit
with
the
address
000
is
a
single
unit
and
not
in
multidrop
mode.
XA=024
will
set
address
to
24
(unit
must
not
be
in
multidrop
mode)
Changing
an
address:
(e.g.
the
address
is
change
from
24
to
17)
command
answer
„017?E“
„017E0.950“
„017XA=024“
“017XA024”
setting
of
a
new
address
„024?E“
„024E0.950“
Example
for
the
broadcast
command:
command
answer
“024?E”
“024E0.950”
“000E=0.5”
will
be
executed
from
all
units,
no
answer
“024?E”
“024E0.500”
“012?E”
“012E0.500”
MID
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