Manual
M7LL
/
M70LL
Laser
‐
Sensors
HB
‐
M7LL
‐
M70LL
‐
E.doc
page
18
of
23
V20130301
MEL
Mikroelektronik
GmbH,
Breslauer
Str.
2,
85386
Eching
/
Germany
www.MELSensor.com
T
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h
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t
t
i
i
n
n
g
g
Function
First
action
Second
action
Remarks
Check
network
cables
Exchange
cables
Use
Ethernet
switch
Check
settings
of
the
PC
network
card
Use
a
crossed
Ethernet
cable
Is
a
network
cable
connected
to
the
D
‐
Sub
‐
25
pin
connector?
Is
the
cable
tortured
too
much
reconnect
The
network
card
in
the
PC
does
not
recognise
zthe
polarity
of
Rx
‐
/
Tx
automatic
Use
an
Ethernet
switch
The
problem
arises
with
cheap
Gigabit
Ethernet
hardware
Read
the
RS
‐
232
prompt
from
the
sensor
Cabling
according
to
page
Start
Terminal
software
before
power
up
of
the
sensor
Check
if
somebody
else
is
communicating
with
your
sensor
Ping
the
IP
address
of
the
sensor
Cmd:
ping
xxx.xxx.xxx.xxx
When
the
sensor
is
not
powered
on,
you
must
not
receive
an
answer.
Whenn
you
receive
an
asnwer
even
when
the
sensor
is
not
powered
then
anyone
else
is
using
this
IP
address.
Check
if
your
routers
and
switches
allow
the
use
of
port
3000
Stellen
Sie
eine
direkte
make
a
direct
connection
You
may
need
a
crossed
Ethernet
cable!
Use
unmanaged
switches.
Network
connection
to
PC
failed
Check
the
setting
of
the
network
card
in
the
PC
Are
sensor
and
PC
in
the
same
subnet?
PC
and
sensor
must
be
in
the
same
network
segment
(subnet)
Turn
off
firewall
Allow
communication
for
port
3000,
TCP
protocol
Windows
7
sometimes
creates
problems,
because
it
deactivates
network
when
it
is
not
active.
Eth.
‐
Link
and
100Mbit
are
lit
but
no
network
connection
Arp
‐
d
Reset
network
card
cache
Slow
connection
Is
the
network
card
a
100
Mbit
version?
Use
another
PC,
another
Ethernet
switch
Do
not
use
hubs.
The
connection
to
the
PC
is
working,
but
measurement
results
are
received
with
a
delay
of
a
few
seconds
The
PC
is
too
slow
Use
a
faster
PC
Set
graphic
display
to
minimum
settings
