35
11 Diagnostics and servicing
VEGAPULS 21 • Two-wire 4 … 20 mA/HART
58351-EN-191014
4
1
2
3
Fig. 26: Pictographs of the status messages
1 Failure - red
2 Out of specification - yellow
3 Function check - orange
4 Maintenance - blue
Failure: Due to a malfunction in the instrument, a fault message is
output.
This status message is always active. It cannot be deactivated by the
user.
Function check: The instrument is being worked on, the measured
value is temporarily invalid (for example during simulation).
This status message is inactive by default.
Out of specification: The measured value is unreliable because an
instrument specification was exceeded (e.g. electronics temperature).
This status message is inactive by default.
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.
Code
Text message
Cause
Rectification
DevSpec
State in CMD 48
F013
no measured value
available
Sensor does not detect an echo
during operation
Antenna system dirty or defective
Check or correct installation and/
or parameter settings
Clean or exchange process com-
ponent or antenna
Bit 0 of Byte 0 … 5
F017
Adjustment span
too small
Adjustment not within specifi
-
cation
Change adjustment according
to the limit values (difference be
-
tween min. and max. ≥ 10 mm)
Bit 1 of Byte 0 … 5
F025
Error in the lineari-
zation table
Index markers are not continu-
ously rising, for example illogical
value pairs
Check linearisation table
Delete table/Create new
Bit 2 of Byte 0 … 5
F036
No operable soft-
ware
Failed or interrupted software up-
date
Repeat software update
Check electronics version
Exchanging the electronics
Send instrument for repair
Bit 3 of Byte 0 … 5
F040
Error in the elec-
tronics
Hardware defect
Exchanging the electronics
Send instrument for repair
Bit 4 of Byte 0 … 5
Failure