1710
‐
PT060PNE
Rev.
0
Page
12
of
57
2.3.2 LED
signals
The
meaning
of
the
messages
provided
by
the
signal
LEDS
located
on
the
instrument’s
front
panel
is
the
following:
RL1
÷
RL5
The
LED
is
on
due
to
the
triggering
of
the
relative
threshold
SR
The
LED
is
on
to
notify
the
triggering
of
the
safety
signal
TX
The
LED
flashes
to
signal
the
transmission
activity
of
serial
port
1.
RX
The
LED
flashes
to
signal
the
receiving
activity
of
serial
port
1.
2.3.3
Key functions
If
the
instrument
is
in
operating
mode,
it
allows
commuting
the
reading
(if
the
instrument
foresees
the
optional
second
channel)
to
display
the
weight
value
of
the
second
channel
or
total
value
(channel
1
+
channel
2).
If
the
instrument
is
in
configuration
mode,
it
allows
browsing
forward
the
menu
items
and
increasing
the
parameters’
value.
If
the
instrument
is
in
operating
mode
and
the
weight
was
zeroed,
the
display
will
indicate
the
value
by
pressing
this
key
(for
the
selected
channel).
If
the
instrument
is
in
configuration
mode,
it
allows
browsing
backward
the
menu
items
and
decreasing
the
parameters’
value.
If
the
instrument
is
in
operating
mode,
it
allows
entering
in
configuration
mode.
If
the
instrument
is
in
configuration
mode,
the
key
will
confirm
the
selections
made.
If
the
instrument
is
in
operating
mode,
it
has
no
function.
If
the
instrument
is
in
configuration
mode,
this
key
will
cancel
the
selections
made.
2.4 Self-troubleshooting
2.4.1
Cell connection fault (FAIL)
The
instrument
constantly
checks
the
correct
connection
of
the
load
cell
(interruption
and
short
‐
circuit
of
the
signal
and
power
supply
connections)
and,
in
case
an
anomaly
is
detected,
a
FAIL
internal
signal
is
generated.
By
programming
one
or
more
relays
as
FAIL,
in
addition
to
the
message
appearing
on
the
display,
all
channel’s
relays
are
forced
in
alarm
status
(they
are
de
‐
energized).
For
example,
by
programming
FAIL
1,
all
relays
set
with
alarm
thresholds
on
channel
1
and/or
the
total,
are
forced
in
alarm
status.
