Technical Manual Universal Interface BE
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Tel.: +49-2263-880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
41
4.5.7
LED
Output
The
following
illustration
shows
the
setting
options
for
this
parameter:
Figure
20:
Parameter
LED
Output
The
following
chart
shows
the
dynamic
range
of
this
parameter;
Sub
‐
function
Dynamic
range
[default
value]
comment
LED
state
at
objectvalue
0/1
OFF/ON(normal)
ON/OFF(inverted)
indicates
the
behaviour
of
the
LED
LED
state
at
ON
permanent
blinking
indicates
the
luminescent
behaviour
of
the
LED
Behavior
of
LED
at
undefined
object
OFF
short
flash
defines
the
behavior
of
the
LED,
when
the
communication
object
of
the
LED
has
no
valid
value
Table
38:
Parameter
LED
Output
The
LED
function
allows
controlling
LEDs
at
the
output
without
any
additional
suppressor
circuits.
The
universal
interface
delivers
the
nesseserary
forward
voltage
as
well
as
the
contact
current.
Voltage
of
the
output
is
set
fixed
to
2V
DC
and
current
to
1mA.
Because
the
power
supply
of
the
LEDs
is
deliverd
by
the
bus,
the
output
current
is
low.
The
values
are
designed
for
the
use
of
“low
current
LEDs”
to
avoid
an
overload
of
the
bus
‐
system.
The
behavior
of
the
LED
Output
can
be
parameterized
as
well
as
the
luminiscent
behavior
of
the
LEDs.
The
behavior
of
the
output
can
be
set
as
normal
or
as
inverted.
By
the
luminescent
behavior,
you
can
set
how
the
LED
should
shine.
It
is
possible
to
let
the
LED
shine
permanent
or
periodically.
The
communication
object
for
the
LED
output
is
an
1
‐
Bit
object
and
can
be
controlled
by
a
normal
switching
function.
So,
it
is
possible
that
the
LED
Output
indicates
the
switching
bahviour
of
another
channel
of
the
universal
interface.
The
chart
shows
the
communication
object
for
this
parameter:
Nummer
Name
Größe
Verwendung
22/32
LED
Output
A
‐
B/D
1
Bit
switching
of
the
LED
at
the
output
of
the
depending
channel
Table
39:
Communication
object
Parameter
LED
output
