Campbell Scientific TD Operating System Addendum for CR510, CR10X, and CR23X - Manual (Page 28)

TD ADDENDUM—SECTION 2. INTERNAL DATA STORAGE
AD-2-4
TABLE 2.3-1. *7 Mode Command Summary
KEY ACTION
A "Advances" along a record, when the
end of the record is reached the
'cursor' advances to the first field in
the next record.
B "Backs" up along a record, wraps to
the last element in the previous
record
C "Climbs" up the table, toward the
oldest data, stops on oldest record.
D "Drops" down the table, toward the
newest data, stops on newest record.
# Enter Time Mode to display timestamp.
Enter new time values to jump to record.
Each record of data in a table has a time
associated with it. Event data stores the time
as part of the data, interval tables calculate the
time based on the interval and a reference time.
The time associated with each record consist of
a year, month/day, hour/minute, and seconds
value. Julian dates are not used. When
viewing data in the *7 mode, event data records
have time as part of the record. The field
number on the keyboard/display does not
change while viewing the four time values since
time is considered a single field. Interval data
does not contain time and it is not displayed as
part of the record. To see the time values for a
given record, press the # key while viewing any
of the fields within the record.
The A and B key are used move through the
four time values for the record. The C and D
keys can be used to move to newer or older
records and view the same time value of the
new record. Pressing the # key again while
viewing time or using the A or B keys to
advance or back beyond the time values will
return the display to the same field as was
displayed when the time mode was entered.
The time field is displayed as: day.month, year,
hr:min, seconds
While viewing time, entering new time values
will allow the display to jump to the record with
time values closest to those entered. The jump
takes place when the time mode is left.
Interval tables do not store time as part of the
record, but calculate the time. A table 10
records long is maintained inside Intermediate
Storage to keep track of "holes" in the recorded
data, due to watch dog errors or clock changes,
so that the time of each record can be implicitly
maintained.
This "hole" table rings around, and any recorded
data that cannot be time stamped using this
"hole" table cannot be displayed.
To view the “hole” table for a given table, Key
*7. The display will show: 07:nn, where nn is
the number of Data Storage Tables defined.
Enter the number of table where you want to
view the “holes." Then press the C key
followed by the A key. The Hole table fields are
as follows:
01:time of hole;
02:number of holes.