16
6. Operation and function description
6.5 Interface
All
IPW5
/
IPM5
devices
can
be
optionally
programmed
or
configured
via
an
interface.
The
devices
do
not
have
an
interface
as
standard.
Pressing
the
ENTER
or
<CR>
key
is
always
denoted
by
¥
.
Operation
mode
PN34
The
interface
can
be
operated
in
various
modes
that
can
be
parameterised
via
the
PN34.
PN34=0
Standard
operation
,
in
which
the
unit
only
replies
if
called
on
to
do
so.
This
mode
is
used
only
for
configurating.
PN34=1
Transmission
mode,
in
which
the
measurements
are
cyclically
transmitted
via
the
serial
interface
within
the
set
measuring
time.
The
transmission
mode
is
interrupted
on
receipt
of
“>
¥
“
and
the
unit
changes
to
standard
mode.
To
change
back
to
transmission
mode,
the
display
must
be
restarted,
either
by
entering
the
command
S
¥
or
by
switching
the
device
off
and
on.
With
the
transmission
mode,
the
display
value
is
transmitted
via
the
interface
in
ASCII
format.
Minus
signs
and
decimal
points
are
also
transmitted
so
that
the
output
can
be
displayed
directly
on
a
terminal
or
processed
by
a
SPS.
Zeros
at
the
front
are
suppressed
during
transmission.
With
an
overflow
or
underflow,
the
display
transmits
horizontal
bars
(hyphens)
"
-
-
-
-
-
¥
".
Examples:
"0.00
¥
"
;
"-9.99
¥
"
;
"999.99
¥
"
;
"-123.45"
;
"
-
-
-
-
-
¥
"
With
the
aid
of
this
simple
protocol
structure,
the
display
data
can
be
transferred
very
easily
to
a
PC
etc.
and
are
further
processed
there.
In
the
simplest
case,
a
terminal
program
from
the
operating
system
is
sufficient
to
store
the
received
data
in
a
file.
RS232
/
RS485
For
configuration,
a
terminal
program
or
a
special
configuration
tool
(e.g.
"PM-Tool")
can
be
used.
The
communication
is
a
straight
point-to-point
connection.
The
baud
rate
is
set
to
9600
baud,
with
8
databits,
without
parity
and
one
stopbit.
The structure of a command:
Program number / Command / Value /
¥
.
Program number
See program number table
Command
=
describe a parameter with a decimal value
B
describe a parameter with a binary value
Value
A value from the range of values given in the program number table
¥
ENTER or <CR>, conclusion of any command
Below, for example, the value for the program number 61 is parameterised with a value of 5000.
"61=5000
¥
"
