ABB SM500F User Manual page 57

SM500F
Field mountable paperless recorder
In addition to new channel data files being created according to the New File Interval selection, they are also
created in the following circumstances:

The recorder's power is lost then restored.

The recorder is taken offline and the archive media removed, replaced or refitted.

The recorder's configuration is changed.

One of the current files exceeds the maximum permissible size.

When the daylight saving period starts or ends.
Note. The recorder's internal clock can be configured to adjust automatically at the start and end of
Daylight Saving Time (Summertime) periods – see Section 7.6.3, page 76.
When one of the above conditions occurs, new channel data files are created for each enabled group and
the file extension index on each new file is incremented by one from the previous file.
Example – if the original file had an extension of .D00, after one of the above events a new file will be
created with the same filename but an extension of .D01.
Files containing data generated during the daylight saving period (summertime) have '~DS' appended to
the filename.
Example 1 – Start of daylight saving period:
A daily file is started at 00:00:00 on 30th March 2003 –filename: 30Mar03ProcessGroup1.D00.
Summertime starts at 2:00am on 30th March 2003.
The clock changes automatically to 3:00am.
The existing file is closed and a new file is created –filename: 30Mar03ProcessGroup1~DS.D00.
The file '30Mar03ProcessGroup1.D00' contains data generated from 00:00:00 to 01:59:59 (before
summertime starts).
The file '30Mar03ProcessGroup1~DS.D00' contains data generated from 03:00:00 (after summertime
starts).
Example 2 – End of daylight saving period:
A daily file is started at 00:00:00 on 26th October 2003 –filename: 26Oct03ProcessGroup1~DS.D00
Summertime ends at 3:00am on 26th October 2003.
The clock changes automatically to 2:00am.
The existing file is closed and a new file is created –filename: 26Oct03ProcessGroup1.D00
The file '26Oct03ProcessGroup1~DS.D00' contains data generated from 00:00:00 to 02:59:59 (before
summertime ends).
The file '26Oct03ProcessGroup1.D00' contains data generated from 02:00:00 (after summertime
ends)
IM/SM500F Rev. Z
6 Archiving
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