Display in the
main menu
(meaning)
Possible causes
Troubleshooting
ErrPlb
(Plausibility error)
Measured value not plausible. Light
path between the measuring device
and the reflector interrupted.
Observe the light spot on the reflec‐
tor. The light spot must not drift from
the reflector. If necessary, realign
the measuring device and reflector
or use a larger reflector. For align‐
ment and mounting
.
Measured value not plausible. Meas‐
ured value outside the permissible
measuring range.
Check measurement range. If neces‐
sary, use device variant with high
measuring range.
Measured value not plausible. Opti‐
cal interference is present, e.g. as
a result of parallel mounted optical
sensors.
Remove any optical interference
ErrLsr
(Laser error)
The service life of the measurement
laser has been exceeded.
Replace the device. It is advisable to
replace the device during the next
maintenance session.
ErrLvl
(Level error)
Current signal attenuation is beyond
the error limit
■
Align the distance sensor and
reflector with each other
"Aligning the distance sensor
and reflector with each other",
page 27
.
■
Clean the optical interfaces like
the reflector and viewing window.
■
Check the reflective tape for dam‐
age.
ErrTmp
(Temperature
error)
The internal device tempera‐
ture is outside the range of
–15 °C ... +80 °C.
For the permissible ambient temper‐
ature
.
■
Check the ambient temperature.
Provide better ventilation if neces‐
sary.
■
Shield the device from radiated
heat, e.g. shade the measuring
device from direct sunlight.
■
At low ambient temperatures, use
a heating system for the device.
■
At high ambient temperatures,
use a cooling housing.
12.5
Communication problems
12.5.1
Ethernet problems
The LED
LNK
signal the connection status (link) of the Ethernet ports.
Table 39: LED
LNK
Display
Status
Measures
Off
No physical connection (link) to the
next participant available.
Check Ethernet wiring.
12.5.2
PROFIBUS problems
The
BF/SF
LEDs indicate the PROFIBUS status:
12
TROUBLESHOOTING
84
O P E R A T I N G I N S T R U C T I O N S | DL100 Pro PROFIBUS DP
8014755/19H8/2021-10-15 | SICK
Subject to change without notice