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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 las

t elem

ent in the previous

record

C "Climbs" up the table, toward the

oldes

t data, st

ops on oldest record.

D "Drops" down the table, toward the

newest data, s

tops 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

f

our tim

e 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, s

econds

While viewing time, entering new time values

will allow the dis

play 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

r

ecor

d, 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 c

annot be time s

tamped 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.

1 2 ... 323 324 325 326 327 328 329 330 331 332 333 ... 373 374

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