Campbell Scientific CR1000KD CR1000 Measurement and Control System - Page 226

Section 7. Installation 'Declarations Public rTime(9) As Long Public rTime2(7) As Long Dim x DataTable(SecondTable,True,-1) DataInterval(0,5,Sec,10) Sample(1,rTime,NSEC) Sample(1,rTime2,NSEC) EndTable 'Program BeginProg Scan(1,Sec,0,0) RealTime(rTime) For x = 1 To 7 rTime2(x) = rTime(x) Next CallTable SecondTable NextScan EndProg '(or Float) '(or Float) CRBasic Example 46. NSEC -Convert Timestamp to Universal Time 'Application: the CR1000 needs to display Universal Time (UT) in human readable 'string forms. The CR1000 can calculate UT by adding the appropriate offset to a 'standard time stamp. Adding offsets requires the time stamp be converted to numeric 'form, the offset applied, then the new time be converted back to string forms. 'These are accomplished by, '1) reading Public.TimeStamp into a LONG numeric variable. '2) store it into a type NSEC datum in final data storage. '3) sample it back into string form using the TableName.FieldName notation. 'Declarations Public UTTime(3) As String * 30 Dim TimeLong As Long Const UTC_Offset = -7 * 3600 '-7 hours offset (as seconds) DataTable(TimeTable,true,1) Sample(1,TimeLong,Nsec) EndTable 'Program BeginProg Scan(1,Sec,0,0) '1) read Public.TimeStamp into a LONG numeric variable. TimeLong = Public.TimeStamp(1,1) + UTC_Offset '2) store it into a type NSEC datum in Final Data Storage. CallTable(TimeTable) 226