Campbell Scientific CR1000 Measurement and Control System - Manual (Page 223)

Section 7. Installation
223
Figure 75: Data from TrigVar program
CRBasic Example 42. Using TrigVar to Trigger Data Storage
'In this example, the variable "counter" is incremented by 1 each scan. The data table
'is called every scan, which includes the Sample(), Average(), and Totalize()
'instructions. TrigVar is true when counter = 2 or counter = 3. Data are stored when
'TrigVar is true. Data stored are the sample, average, and total of the variable
'counter, which is equal to 0, 1, 2, 3, or 4 when the data table is called.
Public counter
DataTable (Test,counter=2 or counter=3,100)
Sample (1,counter,FP2)
Average (1,counter,FP2,False)
Totalize (1,counter,FP2,False)
EndTable
BeginProg
Scan (1,Sec,0,0)
counter = counter + 1
If counter = 5 Then
counter = 0
EndIf
CallTable Test
NextScan
EndProg
7.8.10 NSEC Data Type
Data of NSEC data type reside only in final data storage. A datum of NSEC
consists of eight bytes — four bytes of seconds since 1990 and four bytes of
nanoseconds into the second.
Nsec is declared in the Data Type parameter in final-
data storage output-processing instructions
(p. 477).
It is used in the following
applications.
• Placing a time stamp in a second position in a record.
• Accessing a time stamp from a data table and subsequently storing it as part
of a larger data table. Maximum(), Minimum(), and FileTime() instructions