Campbell Scientific PC208 Datalogger Support Software - Manual (Page 78)

SECTION 5. TELCOM
5-4
The parameters listed above are the default
values. Some of the parameters will change or
disappear as different options are selected.
The cursor will be on the first parameter (i.e.,
"CR10(X)"). Press the space bar to toggle the
option. To change the value of numerical
parameters, the new value must be keyed in.
Select a parameter by pressing the "Enter" key
('CR') and the cursor will advance to the next
parameter. The cursor can be moved up and
down with the arrow keys. Additional editing
commands are given in Table 5-2.
Some parameters have seldom used options
which are "hidden" and will only appear when
the H key is pressed to toggle the option. In the
following lists, hidden options are enclosed in
brackets [].
When all parameters have been entered
correctly, save the file by keying the control and
P keys (^P). If the "Next Time To Call" has
passed, TELCOM will call the station, retrieve
any data, and prompt for another station name.
End TELCOM by pressing 'CR' when a station
name is requested. A detailed description of
each of the station parameters follows.
Datalogger or Command Type:
Options:
CR10X Security Code: 0
CR500 Security Code: 0
CR10 Security Code: 0
21X Security Code: 0
CR7 Security Code: 0
300 Series Security Code: 0
DOS Command
Exit TELCOM
[21X (2 prom)]
[CR7 w/700 CM]
[CR21]
[DSP4 Display]
[NONE]
Most dataloggers have the option of requiring a
security code before allowing certain functions.
If security is enabled in the datalogger, the code
must be entered to allow TELCOM to reset the
clock or collect data (CR10(X) level 3 only).
The CR7 with the Model 700 Control Module
and the CR21 (and 21Xs with PROMS 377E
and 378F) use an older set of telecommuni-
cations commands. The binary commands are
more efficient but less reliable. CR21s with
Format 2 tape capability are the only CR21s
that support the binary commands. When the
CR7 or CR21 "Datalogger type" is selected the
option for binary or ASCII data collection is
selected on the "Collection Commands to Be
Used" line.
The "DOS Command" option is used to enter a
command or program to be executed during
unattended operation.
The "Exit Telcom" option terminates TELCOM.
This option is seldom used since the "DOS
Command" option allows other programs to run
while TELCOM is still resident. The option may
be used in a batch file if it is necessary to utilize
memory occupied by TELCOM.
Fix Datalogger Clock Using PC Clock:
Options: No
Check Only & Report When 30 sec
off
When 30 sec off
When "No" is selected, TELCOM will not check
or reset the clock.
"Check Only & Report When 30 sec off"
allows the operator to key in the actual number
of seconds once the option has been selected.
TELCOM will check the clock each time the
station is called and will make an entry in the
error file stating the time and error whenever
the datalogger clock is off by more than the
number of seconds entered. TELCOM will not
reset the clock.
When the datalogger clock is reset, it will
change the time interval over which output is
calculated. For example, if the time is set back
2 minutes within an hour interval, that interval
will be 62 minutes instead of 60. Output
processing such as averages will still be valid
because the datalogger keeps track of the
number of samples. Totalized values will
include more or fewer samples than normal.
If a pulse count instruction is being executed on
an interval greater than once a second,
resetting the time may significantly alter the
number of counts within the interval in which
time is reset.