Siemens SITRANS LG250 Operating Instructions Manual page 59

Failure
Code Cause
Text message
F013 – Sensor does not detect an echo
during operation
no measured val-
– Process component or probe
ue available
contaminated or defective
F017 – Adjustment not within specifica-
tion
Adjustment span
too small
F025 – Index markers are not continu-
ously rising, for example illogical
Error in the line-
value pairs
arization table
F036 – Failed or interrupted software
update
No operable soft-
ware
F040 – Hardware defect
Error in the elec-
tronics
F041 – Cable probe broken or rod probe
defective
Probe loss
F080 – General software error
General software
error
PBD-51041387
This status message is always active. It cannot be deactivated by the
user.
Function check: The instrument is in operation, the measured value
is temporarily invalid (for example during simulation).
This status message is inactive by default. It can be activated by the
user via PACTware/DTM or EDD.
Out of specification: The measured value is unstable because the
instrument specification is exceeded (e.g. electronics temperature).
This status message is inactive by default. It can be activated by the
user via PACTware/DTM or EDD.
Maintenance: Due to external influences, the instrument function
is limited. The measurement is affected, but the measured value is
still valid. Plan in maintenance for the instrument because a failure is
expected in the near future (e.g. due to buildup).
This status message is inactive by default. It can be activated by the
user via PACTware/DTM or EDD.
The following table shows the error codes in the status message
"Failure" and gives information on the reason and rectification. Keep
in mind that some information is only valid with four-wire instruments.
SITRANS LG250 - Operating Instructions
Rectification
– Check or correct installation and/
or parameter adjustment
– Clean or exchange process com-
ponent or probe
– Change adjustment according
to the limit values (difference
between min. and max. ≥ 10 mm)
– Check values of the linearization
table
– Delete/create a new linearization
table
– Repeat software update
– Check electronics version
– Exchanging the electronics
– Send instrument for repair
– Exchanging the electronics
– Send instrument for repair
– Check probe and exchange, if
necessary
– Disconnect operating voltage
briefly
DevSpec State
in CMD 48
Bit 0 of
Byte 0 ... 5
Bit 1 of
Byte 0 ... 5
Bit 2 of
Byte 0 ... 5
Bit 3 of
Byte 0 ... 5
Bit 4 of
Byte 0 ... 5
Bit 13 of
Byte 0 ... 5
Bit 5 of
Byte 0 ... 5
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