Troubleshooting
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8
Troubleshooting
8.1
What to Do in the Event of an Error
Please check that the following actions have been taken:
■
The customer has tested the system according to the checklist below.
■
Telephone assistance has been sought from the Service Center to isolate
the problem.
Checklist
■
If none of the above solves the problem, contact the Service Center. Have
the exact model number of the sensor ready if possible.
Fault
Indicators
Cause
Remedy
PWR
ERR
LAN
OPT
No display
Off
Off
Off
Off
The power
supply is
switched off
or there is a
wiring fault in
the distributor
or switch
cabinet.
Check whether there is
a reason why the
power supply is
switched off
(installation or
maintenance work,
etc.). Switch on the
power supply if
appropriate. Check the
wiring carefully and
repair any wiring faults.
No network
connection
On
Off
Network
cable not
connected or
incorrectly
connected
Port on the
switch is
deactivated
Check the connection
to the next participant:
LAN LED
Activate the port on the
switch
No optical
communication
On
On
Off
Receiving
level too low,
transfer
blocked
Improve alignment or
incorrect pairing;
F1+F2 required
Bar graph display
does not reflect full
value despite
precise alignm ent
On
Off
On
On
Not an error;
individual
scaling
deviation in
the highest
signal
strength
range
None
