Campbell Scientific CR5000 Measurement and Control Module - Manual (Page 98)

Section 6. Data Table Declarations and Output Processing Instructions
6-4
Const RevDiff 1 'Reverse input to cancel offsets
Const Del 0 'Use default delay
Const Integ 0 'Use no integration
Public RefTemp 'Declare the variable used for reference temperature
Public TC(5) 'Declare the variable used for thermocouple measurements
Public Flag(8)
Units RefTemp=degC '
Units TC=degC
DataTable (AvgTemp,Flag(1),1000) 'Output when Flag(1)=true
DataInterval (0,10,sec,10) 'Output every 10 seconds(while Flag(1)=true)
'OpenInterval 'When Not Commented, include data while Flag(1)=false in next average
Average (1,RefTemp,IEEE4,0)
Average (5,TC,IEEE4,0)
EndTable
BeginProg
Scan (500,mSec,0,0)
PanelTemp (RefTemp,250)
TCDiff (TC(),5,mV50C,9,TypeT,RefTemp,RevDiff,Del,Integ,1,0)
CallTable AvgTemp
NextScan
EndProg
DataEvent (RecsBefore, StartTrig, StopTrig, RecsAfter)
Used to set a trigger to start storing records and another trigger to stop storing
records within a table. The number of records before the start trigger and the
number of records after the stop trigger can also be set. A filemark (Section 8) is
automatically stored in the table between each event.
Parameter
& Data Type Enter
RecsBefore
Constant The number of records to store before the Start Trigger.
StartTrig The variable or expression test to Trigger copying the pre trigger records into the
data table and start storing each new record..
Variable, or Value Result
Expression 0 Do not trigger
≠
0 Trigger
StopTrig
Variable,
Expression or
Constant The variable, expression or constant to test to stop storing to the data table. The
CR5000 does not start checking for the stop trigger until after the Start Trigger
occurs. A non-zero (true) constant may be used to store a fixed number of
records when the start trigger occurs (total number of records = PreTrigRecs+ 1
record for the trigger +PostTrigRecs.). Zero (false) could be entered if it was
desired to continuously store data once the start trigger occurred.
Value Result
0 Do not trigger
≠
0 Trigger
RecsAfter
Constant
The number of records to store after the Stop Trigger occurs.