Instruction manual

SECTION 7. DATA COLLECTION (DBSELECT)
7-5
FIGURE 7-3. Selection of Data to be Collected
7.4 HOLE COLLECTION STATUS AND
MANUAL HOLE COLLECTION
Selecting HOLES on the DBSelect main menu
displays the hole collection screen, as shown in
Figure 7-4. The box at the top shows all holes
that are pending including the one currently
being worked on. The
I WILL WAIT _____ SECONDS FOR A HOLE
I HAVE BEEN WAITING _____ SECONDS
parameter boxes give information on the current
hole collection. In the event that the full 900
seconds elapse without the current hole being
finished collecting, DBSelect will move that hole
to the end of the hole queue and proceed with the
next hole. This prevents a hole cannot be
collected from due to communication failure, and
also prevents hole collection at other stations.
The _____ HOLES ARE IN THE LIST
parameter gives the total number of holes in the
queue.
Message relating to hole collection will be
stored in a file named HOLE$.LOG (see
Section 8.1). This log is enabled from the FILE
entry on the DBSelect main menu. If
HOLE$.LOG is enabled, the box on the bottom
right portion of the screen will also display these
messages regarding the detection, queuing,
and collection of holes.
DBSelect will calculate whether the hole data
still exist in a datalogger before attempting to
collect a given hole. If the data is not available
DBSelect will not attempt to collect it. This
reduces unneeded communication in the
network. When this occurs, DBSelect writes a
message indicating the hole was too old to the
HOLE$.LOG file if the log is enabled. When
DBSelect requests a range of data from a
datalogger, the datalogger will return all, some,
or none of the requested data depending on
what is available. How long a given hole is
available depends on the size of the table, and
how rapidly data is written to the table. All
datalogger data is erased when a new
datalogger program is downloaded or if power is
removed from the datalogger.
Users can manually request a range of data by
adding a hole to the hole queue. This is done
by selecting a station and table and then
specifying a start and stop time. The boxes and
buttons to do this are located in the middle of
the hole collect screen. Once the desired range
is specified, selecting the ADD button adds the
hole to the queue. If a hole is added manually
and DBSelect automatically collects the data,
duplicate data will be stored. If the *.TABLE
buttons are selected after selecting a station,
table, and specifying a range of data, a