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CR800 Equal Flow Increment Sampling Program?


SEMN Feb 11, 2011 02:37 AM

I am trying to write a CR800 program that features equal flow increment automated sampling using Shortcut. I think am very close, but can't get the final step that resets my cumulative flow "user entered" field whenever it exceeds a defined threshold. It should be a simple script (if cumulative flow >= value, then reset cumulative flow to "0:), but I can't figure it out. What do I have to enter to make this work?

Does anyone have a program that they would be willing to share that has equal flow automated sampling?


IslandMan Feb 11, 2011 11:16 AM

Why don't you post what you have so we can try to spot the problem.


Sam Feb 12, 2011 09:27 PM

Just off the cuff, maybe something like this?

Const SampCPort = 1

Public PanTemp, BattV
Public SampMethod = 1 '0 = time, 1 = equal flow
Public SampTimeInt = 5 'minutes
Public SampFlowInt = 10 'cf
Public CFlowMax = 100 'cf, reset to 0
Public SampleNow As Boolean 'boolean trigger
Public CFlow 'cf measurement

Dim IntCntr = 1

DataTable (FlowData,1,-1)
DataInterval (0,60,Sec,10)
Minimum (1,BattV,FP2,0,False)
Sample (1,PanTemp,FP2)
Sample (1,CFlow,FP2)
EndTable

DataTable (SampEvent,True,500)
Sample (1,CFlow,FP2)
EndTable

BeginProg
Scan (10,Sec,0,0)
PanelTemp (PanTemp,250)
Battery (BattV)

'Measure Flow
CFlow = CFlow + 5*RND+1 'simulation of cflow

If SampMethod = 0 Then
If TimeIntoInterval (0,SampTimeInt,Min) Then
SampleNow = TRUE
EndIf
ElseIf SampMethod = 1 Then
If CFlow >= (IntCntr * SampFlowInt) Then
SampleNow = TRUE
IntCntr = IntCntr + 1
EndIf
EndIf

If SampleNow Then
PulsePort (SampCPort,35000)
SampleNow = FALSE
CallTable SampEvent 'log sampling event
EndIf

CallTable FlowData 'log regular measurements

If CFlow >= CFlowMax Then
IntCntr = 0
CFlow = 0
EndIf

NextScan
EndProg

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