KROHNE OPTISONIC 7060 EN - Manual (Page 17)

OPTISONIC 7060
Electrical & mechanical installation manual 730962.31.00 page 17 of 52
2.6 Event logging
Important system events (max. 250) are stored in a verification logbook. Each entry consists
of the event, time stamp and the valid volume counter value along with acknowledgement
status present at the time the event occurred. The events are logged continuously in the
order they occur and, each event can be acknowledged manually. Logbook queries provide
information on the number of registered events and the remaining memory space. The
entries are classified as follows:
• Active
events
• Inactive acknowledged and unacknowledged events
• Acknowledged events
If there is no space left in the logbook, the logbook is closed and the system signals a fault.
Until the logbook is reset (deleted), the measured volumes are stored in the error volume
counters, in accordance with the direction of flow, irrespective of the measuring accuracy.
Overview of event entries
Name Class Description Value
(second line on the display)
Power On “I”
information System is cold started or rebooted after a
watchdog reset. Time stamp of the last counter value stored is
considered to be the time of the “Power off”
event.
Change of
operating mode “I”
information System was changed to the configuration
mode after password input, or back from
the configuration mode to the
measurement mode. Parameter
modifications that affect the measured
values may have been carried out. Activated password level
Volume counter
reset “I”
information Resetting the volume counters to zero Reset volume
Error volume
counter reset “I”
information Resetting the error volume counters to zero Reset volume
Counter overflow “I”
information
One of the four volume counters completed
its counter range.
Logbook reset “I”
information Entire logbook was deleted (“Reset” is
always the first entry and indicated the
point of time the logbook was opened.)
Set clock “I”
information Date and/ or time register of the real time
clock was/ were changed. Time stamp of the change
Check requested “W”
warning The measured value of one path must be
substituted by the replacement value
calculation routine. Path index and cause for deactivation
Output range “W”
warning The current measured value can no longer
be represented by the pulse output,
because the maximum output frequency
was reached.
Measurement
invalid “E” error More than one path must be substituted by
the replacement value calculation routine,
or the activated adaptive path failure
compensation is not yet active. Value is assigned with the four path states
System error “E” error Safe operation of the system is not
guaranteed. Cause for the fault
• CRC program code
• CRC parameter
• CRC counter value
• CRC replacement path weights
• Implausible parameter
• DSP malfunction