Question/Problem
Possible causes
Troubleshooting
Unable to establish
connection to device
in SOPAS ET
•
Missing device drivers
•
Click on the warning symbol in
the device tile. Follow the instruc‐
tions in the wizard and load the
drivers from the device
Connection LED in
SOPAS ET is red
•
Device is offline in SOPAS ET
•
Click on the “Offline” field in the
device tile. If the project is new,
load the parameters from the
device. To transfer existing set‐
tings, write the parameters to the
device
Unable to make any
settings in the device
window in SOPAS ET
•
Insufficient user level
•
Device is offline in SOPAS ET
•
Log in as “Authorized client”
•
Click on the “Offline” field in the
device tile in the main window
No measurement
points are displayed in
the scan view in
SOPAS ET
•
The laser is switched off
•
No objects in the measuring
range
•
Obstacles in the field of view
•
Check the laser control settings
•
Check the settings for the angular
and distance ranges
•
Check that objects are positioned
correctly in relation to the sensor
and that the field of view is not
being blocked by other objects
No transmission of
measurement data via
the Ethernet interface
•
Measurement data not sub‐
scribed
•
The laser is switched off
•
All channels deactivated in
the output data format
•
Check that the LMDscandata
command has been sent and
confirmed by the device
•
Check the laser control settings
•
Check the output data format set‐
tings (in the application)
Status LED lights up
green but problem
persists
•
Device is unable to detect
errors
•
Device is ready to take measure‐
ments; check other sources of
the problem
Status LED lights up
yellow, device contin‐
ues to be able to take
measurements
•
Warning, e.g., due to prob‐
lem with device synchroniza‐
tion or I/O configuration
•
Read the description of the prob‐
lem under System status in
SOPAS ET and take action if
appropriate
Status LED lights up
red, device is no
longer able to take
measurements
•
Error, e.g., due to internal or
external factors. The primary
function of the device cannot
be fulfilled at the current
time.
•
Read the description of the prob‐
lem under System status in
SOPAS ET
•
If the error persists, disconnect
the device from the voltage sup‐
ply for 10 seconds and then
restart
Motor synchronization
fails, synchronization
LED on slave does not
light up green perma‐
nently
•
No device configured as
master
•
No device configured as
slave
•
Link the sync I/Os
•
Sync signal corrupted
•
Check the master and slave set‐
tings
•
Check connections and cables
Encoder ticks not
being output in data
telegram or are not
incrementing
•
Encoder not connected or
signal corrupted
•
Unsuitable encoder in use
(e.g., no push-pull output
stage or supply voltage does
not match LMS4000)
•
No encoder configured
•
Encoder ticks deactivated in
output data format
•
Check the encoder connection,
data sheet, and pin assignment
•
Check the settings for the
encoder (interfaces) in SOPAS ET
•
Check the output data format set‐
tings (in the application)
9
TROUBLESHOOTING
44
O P E R A T I N G I N S T R U C T I O N S | LMS4400/LMS4500
8023202/16S6/2020-01-24 | SICK
Subject to change without notice
