BRONKHORST
®
Page
9
FlowDDE
9.17.067
For
communication
with
FLOW
‐
BUS
through
other
ways
than
DDE,
directly
via
RS232
ASCII
‐
strings
or
via
C
‐
libraries,
use
the
parameter
numbers
for
the
FLOW
‐
BUS
modules
(in
column
FBnr
of
Parameter
properties
table).
Also
you
will
need
to
know
the
node
address
of
the
instrument
on
the
FLOW
‐
BUS,
the
process
number
and
the
parameter
number
on
the
instrument.
The
node
address
is
the
node
address
of
the
instrument
on
the
FLOW
‐
BUS.
RS232
interfaces
accept
node
address
128.
When
sending
messages
to
node
address
128,
the
message
will
always
be
accepted,
regardless
the
true
node
address
of
the
instrument
on
the
bus.
The
process
can
be
found
in
the
parameter
table
or
has
to
be
determined
when
nothing
is
filled
in.
In
that
case,
the
process
number
most
often
is
1,
but
on
devices
with
e.g.
multiple
sensor
channels,
the
process
will
be
1
for
the
first
channel,
2
for
the
second,
and
so
on
up
to
32.
On
these
modules
also
process
33,
65
and
65
are
multiplied
in
this
way.
It
is
important
to
know
that
not
all
parameters
are
available
on
all
(FLOW
‐
BUS)
instruments.
For
more
details
about
parameters
and
their
use
see
also
the
technical
documentation
of
your
instrument.
The
Bronkhorst®
software
application
FlowDDE
also
gives
an
overview
of
which
parameters
are
available
on
which
devices.
