Campbell CR300 series - 7. Setting up communications with the data logger

CR300-Series Datalogger
25
If a field is an element of an array, the fieldname will be followed by a list of
subscripts within parentheses that identifies the array index. For example, a
variable named Values, which is declared as a two-by-two array in the
datalogger program, will be represented by four fieldnames: Values(1,1),
Values(1,2), Values(2,1), and Values(2,2). Scalar variables will not have array
subscripts. There will be one value on this line for each scalar value defined by
the table.
If the default fieldnames are not acceptable to the programmer, FieldNames()
instruction can be used in the CRBasic program to customize the names.
TIMESTAMP, RECORD, BattV_Avg, PTemp_C_Avg, and Temp_C_Avg
are the default field names in TABLE 5-2, Typical Data Table
(p. 24).
The third header row identifies engineering units for that field of data. These
units are declared at the beginning of a CRBasic program, as shown in
CRBasic Example B-6, Definition and Use of a Data Table
(p. B-8). In Short
Cut, units are chosen when sensors or measurements are added. Units are
strictly for documentation. The CR300 does not make use of declared units, nor
does it check their accuracy.
The fourth header row reports abbreviations of the data process used to
produce the field of data. See TABLE 5-4.
TABLE 5-4. Data Process Abbreviations
Process Name Abbreviation
Totalize
Tot
Average
Avg
Maximum
Max
Minimum
Min
Sample at Max or Min
SMM
Standard Deviation
Std
Moment
MMT
Sample No abbreviation
Histogram
1
Hst
Histogram4D
H4D
FFT
FFT
Covariance
Cov
Level Crossing
LCr
WindVector
WVc
Median
Med
ET
ETsz
Solar Radiation (from ET)
RSo
Time of Max
TMx
Time of Min
TMn
1
Hst is reported in the form Hst,20,1.0000e+00,0.0000e+00,1.0000e+01 where
Hst denotes a histogram, 20 = 20 bins, 1 = weighting factor, 0 = lower bound, 10 =
upper bound.