Siemens SITRANS SL, Руководство по эксплуатации, Страница: 119 / 212

Operation
7.3 Menu system
SITRANS SL
Operating Instructions, 12/2010, A5E01132948-04
121
The log book groups screen
The alarms are arranged in groups. The first screen of the logbook displays all groups that
have had an alarm event since the logbook last was cleared.
The groups are displayed in a compact format; each row contains the current status, the
group name and a time-stamp for the last change.
Example
Seconds Minutes Hours Days Group name + (active) - (inactive)
4 3 : 2 1 : 8 0 : 1 8 3 0 0 1 G +
In the example above; an alarm related to a measurement being out of range went active
after 381 days, 8 hours, 12 minutes and 34 seconds of runtime. Note that the time refers to
systems total run time; the SITRANS SL does not have a real time clock.
The groups are sorted by the time for the last event. The group which last had a change of
status is on top of the list. Each group will only appear once in the list, so the group view will
not display the entire history.
The log book details screen
When "details" is opened for a group the underlying alarm log is displayed. The "details"
screen gives technical information of the exact cause for the problem.
The alarm events are displayed in the same format as the groups are; with status event,
alarm name and the time-stamp of the event.
The two possible events for an alarm are:
●
Went active (+)
● Went inactive (-)
The size of the log book is limited and can store 4 events for each individual alarm.
Note that when one alarm within a group goes active the group is active. The group is
inactive when all of the underlying alarms are inactive. For this reason there can be alarms
within a group that are more recent than indicated by the group’s time-stamp, i.e. when an
alarm within a group becomes active while the group contains active alarms.
Log book groups and alarms are defined in chapter Alarm, error, and system messages
(Page 163).
Clear log book
Clears the log book.
Before you use this function the LUI must be unblocked.