Archiving Online/Offline; Archiving Updates; Backing-Up Archived Data - ABB SM2000 User Manual

3.7 Archiving Online/Offline

Before data can be archived to external media, the external
media must be placed on-line and one or more archive file
enables set.
• When an external archive media card is inserted, a dialog
box is displayed giving the user the choice of putting the
media on-line or remaining off-line. If no selection is made
within 10 seconds, the media card is placed on-line
automatically:
• When an external archive media card is inserted and there
is >1 day (Binary format) or >1 hour (Text format) of data in
internal memory, a dialog box is displayed prompting the
user to select either the data to be archived or remain off-
line:
• External archive media can be set on-line (if a media card
is inserted) or off-line in the setup menu.
• Set archiving off-line before removing external media to
prevent loss of data and possible damage to the media
card.
Note. Data stored in the internal memory buffer can
still be transferred to the archive media when the
archive media is placed on-line again (providing it is not
off-line so long that the un-archived data in the internal
memory is overwritten).

3.8 Archiving Updates

Data from the instrument's internal memory is archived to
external memory in the following circumstances:
• Automatically, if 'Update type' is set to 'Automatic' during
configuration.
• When the operator selects 'Update' from the Setup menu.
• When a digital signal assigned to the archive update
source becomes active.
If there is un-archived data more than one day old (Binary
format) or one hour old (Text format) when the external
media is inserted or placed on-line, or when 'Update' is
selected from the Setup menu, the operator is prompted
to select the data to be archived:
If a large amount of Text format unarchived data exists, a
progress bar appears. During this time operator views
cannot be accessed, but new data continues to be
recorded to the internal buffer memory.
Updating Archive...

3.9 Backing-up Archived Data

It is advisable to back-up critical data stored on SmartMedia or
Compact Flash cards on a regular basis. The instrument's
internal memory provides a buffer for the most recent data so, if
data stored on archive media is lost, it can be re-archived – see
Reset archiving on page 23.
To ensure that all required data is available for re-archiving, it is
recommended that data archived on archive media is removed
and backed-up before the instrument's internal buffer
overwrites that data. The amount of time that data remains in the
instrument's internal memory depends on the sample rate and
the number of channels selected. See Table A3.1 on page 88 for
details.
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