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Scan order


Makada Oct 16, 2020 09:13 AM

Hi all,

I would like to know (if possible) the order of scans.

I have a main scan of 1 sec.

I have a scan of 250ms and one at 12 seconds.

Am i right in doing the order like so:

Main scan 1 sec.

Subscan 250ms.

Slow sequence 12 seconds.

Or can i use the subscan for 12 seconds too?

With kind regards.


JDavis Oct 16, 2020 09:32 AM

A SubScan is a time based loop within another scan. Subscan is part of a scan. I believe SubScan is not what you want to use in this case.

Scan Priority:

#1    Main Scan

#2    Slow Sequence 1

#3    Slow Sequence 2

#4    Slow Sequence 3

#5    Slow Sequence 4

A scan will pause when it is time for a higher priority scan to run. Put your measurements in scans according to their priority. Check the Status table for skipped scans to see when scans have been paused longer than their interval. 


Makada Oct 16, 2020 10:39 AM

Hi,

Thanks for your reply.

The subscan is a 250ms scan for only the windspeed sensor.

It is used to have the windspeed measuring a running 3s average from the 250ms scan according to WMO. 

The other sensors are all 1 second.

The 12 second is used for the 12s average winddirection which is pulled from the Tablename.fieldname instruction from the windvector from a 12s table.

I am even not sure where to put the "calltable"  instructions regarding the scan types.

Maybe it is more clear if i add my code so it is more visible:)

With kind regards.

 

PreserveVariables
pipelinemode
'Declare Variables and Units
Dim AirTC_2
Dim SPkPa
Dim Twg
Dim Twpg
Dim Vpg
Dim Vp
Dim SVp
Dim Twch
Dim VpgVpd
Dim Top
Dim Bottom
Dim SVpW
Dim N
Dim HITF
Dim AirTC_3
Dim WCTF
Dim WCWSMPH
Public BattV
Public PTemp_C
Public WS_MS_250ms
Public WS_KPH_250ms
Public RunAvg_WS_KPH_250ms
Public twaalf_sec_avg_WindDir
Public WindDir
Public WindDHist(5)
Public WindDHist50(50)
Public WindD 
Public WindD50

Public deltawind
Public deltaD
Public lastwind

Public MaxD(2), MaxD50(2)
Public MinD(2), MinD50(2)
Public AvgWindD, AvgWindD50
Public mostbacked, mostbacked50
Public mostveered, mostveered50
Public AvgRunWindD, AvgRunWindD50
Public twaalf_sec_avg_RunAvg_WS_KPH_250ms

Public AirTC
Public RH
Public BP_mbar
Public SlrW
Public Rain_mm
Public rain12sec
Public rain1minuut
Public Precepitation_type
Public tips1
Public SlrMJ
Public Tot24
Public Mode(6) 
Public DestMaxSpa(2)
Public Lufft_R2S_Mode
Public TdC
Public TwC
Public HI_C
Public SVPWPa
Public SunHrs
Public PrecipitationHrs
Public PotSlrW
Public RTime(9)
Public SolPos(5)
Public WC_C
Public Rain_mm_tot_hour
Public Rain_inch_tot_hour
Public Tot24_inch
Public BP_inch
Public Tdf
Public AirTf
Public WS_mph
Public WS_kts
Public RunTotal

Alias RTime(1)=Year
Alias RTime(2)=Month
Alias RTime(3)=DayOfMonth
Alias RTime(4)=HourOfDay
Alias RTime(5)=Minutes
Alias RTime(6)=Seconds
Alias RTime(7)=Microseconds
Alias RTime(8)=DayOfWeek
Alias RTime(9)=DayOfYear
Alias SolPos(1)=SolarAzimuth
Alias SolPos(2)=SunElevation
Alias SolPos(3)=HourAngle
Alias SolPos(4)=Declination
Alias SolPos(5)=AirMass

Units BattV=Volts
Units PTemp_C=Deg C
Units RunAvg_WS_KPH_250ms=kilometers/hour
Units WindDir=degrees
Units AirTC=Deg C
Units RH=%
Units BP_mbar=mbar
Units Rain_mm=mm
Units SlrW=W/m^2
Units SlrMJ=MJ/m^2
Units TdC=Deg C
Units TwC=Deg C
Units HI_C=Deg C
Units SVPWPa=Pa
Units SunHrs=hours
Units PotSlrW=W/m^2
Units WC_C=Deg C
Units Year=years
Units Month=months
Units DayOfMonth=days
Units HourOfDay=hours
Units Minutes=Minutes
Units Seconds=seconds
Units Microseconds=microseconds
Units DayOfWeek=days
Units DayOfYear=days
Units SolarAzimuth=degrees
Units SunElevation=degrees
Units HourAngle=radians
Units Declination=radians
Units AirMass=unitless

'Define Data Tables
DataTable(Table12,True,-1)
	DataInterval(0,12,Sec,0)
 	WindVector(1,RunAvg_WS_KPH_250ms,WindDir,IEEE4,0,0,0,0)
	FieldNames("WS_KPH_S_WVT,WindDir_D1_WVT,WindDir_SD1_WVT")
  Maximum(1,RunAvg_WS_KPH_250ms,FP2,False,False)
	Totalize(1,Rain_mm,FP2,False)
	FieldNames("RAIN12SEC")
	Sample(1,AirTC,IEEE4,False)
  Sample(1,RH,IEEE4,False)	
  Sample(1,BP_mbar,IEEE4,False)
EndTable

DataTable(event,True,60)
 DataEvent (0,tips1>0,1,0)
 Sample (1,tips1,FP2)
 Sample (1,Precepitation_type,FP2)
 tips1=0
EndTable

'Define Data Tables
DataTable(Table1,True,-1)
	DataInterval(0,1,Min,10)
 	WindVector(1,RunAvg_WS_KPH_250ms,twaalf_sec_avg_WindDir,FP2,False,0,0,0)
	FieldNames("WS_KPH_S_WVT,WindDir_D1_WVT,WindDir_SD1_WVT")
	Maximum(1,RunAvg_WS_KPH_250ms,FP2,False,False)
	Average(1,AirTC,IEEE4,False)
	Maximum(1,AirTC,FP2,False,False)
	Minimum(1,AirTC,FP2,False,False)
  StdDev(1,AirTC,IEEE4,False)
	Average(1,RH,IEEE4,False)
	Maximum(1,RH,FP2,False,False)
	Minimum(1,RH,FP2,False,False)
	Average(1,BP_mbar,IEEE4,False)
	Maximum(1,BP_mbar,IEEE4,False,False)
	Minimum(1,BP_mbar,IEEE4,False,False)
	Totalize(1,Rain_mm,FP2,False)
	FieldNames("RAIN_ONE_MINUTE")
	Average(1,rain12sec,IEEE4,False)
	Maximum(1,rain12sec,IEEE4,False,False)
	Minimum(1,rain12sec,IEEE4,False,False)
	Sample(1,Lufft_R2S_Mode,IEEE4,False)
	Sample(1,Mode(1),IEEE4,False)
	Sample(1,Mode(2),IEEE4,False)
	Sample(1,Mode(3),IEEE4,False)
	Sample(1,Mode(4),IEEE4,False)
	Sample(1,Mode(5),IEEE4,False)
	Sample(1,Mode(6),IEEE4,False)
	Average(1,SlrW,FP2,False)
	Maximum(1,SlrW,FP2,False,False)
	Average(1,TdC,FP2,False)
	Maximum(1,TdC,FP2,False,False)
	Minimum(1,TdC,FP2,False,False)
	Average(1,TwC,FP2,False)
	Maximum(1,TwC,FP2,False,False)
	Minimum(1,TwC,FP2,False,False)
	Average(1,HI_C,FP2,False)
	Maximum(1,HI_C,FP2,False,False)
	Average(1,SVPWPa,FP2,False)
	Maximum(1,SVPWPa,FP2,False,False)
	Minimum(1,SVPWPa,FP2,False,False)
	Totalize(1,SunHrs,FP2,False)
	Totalize(1,PrecipitationHrs,FP2,False)
	Average(1,PotSlrW,FP2,False)
	Maximum(1,PotSlrW,FP2,False,False)
	Minimum(1,PotSlrW,FP2,False,False)
	Average(1,WC_C,FP2,False)
	Minimum(1,WC_C,FP2,False,False)
  Sample (1,AvgRunWindD,FP2)
  Sample (1,mostbacked,FP2)
  Sample (1,mostveered,FP2)
EndTable

'Define Data Tables
DataTable(Table10,True,-1)
	DataInterval(0,10,Min,10)
 	WindVector(1,RunAvg_WS_KPH_250ms,twaalf_sec_avg_WindDir,FP2,False,0,0,0)
	FieldNames("WS_KPH_S_WVT,WindDir_D1_WVT,WindDir_SD1_WVT")
  Maximum(1,RunAvg_WS_KPH_250ms,FP2,False,False)
  Sample (1,AvgRunWindD50,FP2)
  Sample (1,mostbacked50,FP2)
  Sample (1,mostveered50,FP2)
EndTable


'\\\\\\\\\\\\\\\\\\\\\\\ DataTable ///////////////////////
DataTable(upload,True,1)
	DataInterval(0,1,Min,10)
	Average(1,AirTC,FP2,False)
	Average(1,AirTf,FP2,False)
	Average(1,TdC,FP2,False)
	Average(1,Tdf,FP2,False)
	Average(1,RH,FP2,False)
	Average(1,BP_mbar,IEEE4,False)
	Average(1,BP_inch,IEEE4,False)
	WindVector(1,RunAvg_WS_KPH_250ms,AvgRunWindD,FP2,False,0,0,0)
	Maximum(1,RunAvg_WS_KPH_250ms,FP2,False,True)
	SampleMaxMin(1,WindDir,FP2,False)
  Average(1,WS_mph,FP2,False)
  Average(1,WS_kts,FP2,False)
	Maximum(1,WS_mph,FP2,False,True)
	Maximum(1,WS_kts,FP2,False,True)
	Average(1,SlrW,IEEE4,False)
  Sample(1,Tot24,IEEE4,False)
  Sample(1,Tot24_inch,IEEE4,False)
  Sample(1,Rain_mm_tot_hour,IEEE4,False)
  Sample(1,Rain_inch_tot_hour,IEEE4,False)
EndTable

AngleDegrees
'Main Program

BeginProg
	'Main Scan
	Scan(1,Sec,10,0)
' max mV - min mV = xxxx,xx
'range sensor / uitkomst van boven = 'multiplier'
'min mV x 'multiplier' = 'offset' 

'\\\\\\\\\\\\\\\\\\\\\\\ Direction Sensor measurements 'WindDir' ///////////////////////
    VoltDiff(WindDir,1,mV2500,2,True,0,250,0.1795,-0)
WindDir = (WindDir-220+360)MOD 360
If WindDir>360 Then WindDir =WindDir-360
If WindDir <0 Then WindDir = WindDir+360
twaalf_sec_avg_WindDir = Table12.WindDir_D1_WVT(1)
WindDir = WindDir MOD 360

'\\\\\\\\\\\\\\\\\\\\\\\ Rain Gauge measurement 'Rain_mm' ///////////////////////
    PulseCount(Rain_mm,1,1,2,0,0.01,0)
    PulseCount(Precepitation_type,1,2,2,1,1,0)
    TotalRun (RunTotal,1,Rain_mm,1) 
''VoltDiff(WS_kph_one_sec,1,mV2500,1,True,0,250,0.081035,-40)

		'Default CR1000 Datalogger Battery Voltage measurement 'BattV'
		Battery(BattV)
		'Default CR1000 Datalogger Wiring Panel Temperature measurement 'PTemp_C'
		PanelTemp(PTemp_C,250)
'\\\\\\\\\\\\\\\\\\\\\\\ Temperature & Relative Humidity Sensor measurements 'AirTC' and 'RH' ///////////////////////
    ''VoltDiff(AirTC,1,mV2500,3,True,0,_60Hz,0.05,-65)
    VoltDiff(AirTC,1,mV2500,3,True,0,250,0.05,-65)
    VoltDiff(RH,1,mV2500,4,True,0,250,0.05,-25)
''		If (RH>100) AND (RH<108) Then RH=100
'\\\\\\\\\\\\\\\\\\\\\\\ Barometric Pressure Sensor measurement 'BP_mbar' ///////////////////////
    VoltDiff(BP_mbar,1,mV2500,6,1,0,250,0.184,600)
'\\\\\\\\\\\\\\\\\\\\\\\ Pyranometer measurements 'SlrMJ' and 'SlrW' ///////////////////////
    VoltDiff(SlrW,1,mV250,7,True,0,250,1,0)
		If SlrW<0 Then SlrW=0
		'Calculate total flux
		'The multiplier to calculate total flux was calculated by Short Cut
		'and based on a program execution rate (scan rate) of 1 Seconds.
		'If you change the program execution rate outside of Short Cut with the CRBasic Editor
		'you will need to recalculate this multiplier. See the sensor manual for more details.
		SlrMJ=SlrW*4.330879E-05
		'Calculate flux density
		SlrW=SlrW*43.30879

SubScan(250,mSec,4)
'\\\\\\\\\\\\\\\\\\\\\\\ Wind Speed 'WS_kph' ///////////////////////
    VoltDiff(WS_MS_250ms,1,mV2500,1,True,0,250,0.025,-12.5)
    VoltDiff(WS_KPH_250ms,1,mV2500,1,True,0,250,0.09,-45)
    AvgRun (RunAvg_WS_KPH_250ms,1,WS_KPH_250ms,12)

NextSubScan

		'24 hour running total calculation 'Tot24'
		Tot24=Tot24+Rain_mm
		If TimeIntoInterval(0,1440,Min) Then Tot24=0
		'Dew Point and Wet-Bulb calculation prep
		AirTC_2=AirTC
		SPkPa=101.325
		SatVP(SVp,AirTC_2)
		Vp=RH*SVp/100
		'Dew Point calculation 'TdC'
		DewPoint(TdC,AirTC_2,RH)
		If TdC>AirTC_2 Or TdC=NAN Then TdC=AirTC_2
		'Find Wet-Bulb 'TwC'
		Top=AirTC_2
		Bottom=TdC
		For N = 1 To 25
			Twpg=Twg
			Twg=((Top-Bottom)/2)+Bottom
			WetDryBulb(Vpg,AirTC_2,Twg,SPkPa)
			VpgVpd=Vpg-Vp
			Twch=ABS(Twpg-Twg)
			If VpgVpd>0 Then
				Top=Twg
			Else
				Bottom=Twg
			EndIf
			If Twch<0.01 Or N=25 Then ExitFor
		Next
		TwC=Twg
		'Heat Index calculation 'HI_C'
		HITF=1.8*AirTC+32
		HI_C=-42.379+2.04901523*HITF+10.14333127*RH-0.22475541*HITF*RH-6.83783*10^-3*HITF^2-5.481717*10^-2*RH^2+1.22874*10^-3*HITF^2*RH+8.5282*10^-4*HITF*RH^2-1.99*10^-6*HITF^2*RH^2
		If HITF<80 Or RH<40 Or HI_C0.4*PotSlrW AND SIN(SunElevation)>0.1 Then
			'Calculate sun hours for scan time in seconds
			SunHrs=1/3600*1
		Else
			'Set sun hours for scan time in seconds to 0
			SunHrs=0
		EndIf
	
		If Precepitation_type >0 Then
			'Calculate Precepitation hours for scan time in seconds
			PrecipitationHrs=1/3600*1
		Else
			'Set Precepitation hours for scan time in seconds to 0
			PrecipitationHrs=0
		EndIf
    tips1=RunTotal  
		'Wind Chill calculation 'WC_C'
		WCTF=1.8*AirTC+32
		WCWSMPH=RunAvg_WS_KPH_250ms*0.621371
		WC_C=35.74+0.6215*WCTF-35.75*WCWSMPH^0.16+0.4275*WCTF*WCWSMPH^0.16
		If WC_C>WCTF OR WC_C=NAN Then WC_C=WCTF
		If WCTF>50 OR WCWSMPH<3 Then WC_C=WCTF
		WC_C=(5/9)*(WC_C-32)

TotalRun (Rain_mm_tot_hour,1,Rain_mm,3600)
Rain_inch_tot_hour = Rain_mm_tot_hour / 25.4
Tot24_inch = Tot24 / 25.4
BP_inch = BP_mbar / 33.864
Tdf = TdC * 1.8 + 32
AirTf =  AirTC * 1.8 + 32
WS_mph =  RunAvg_WS_KPH_250ms * 0.621371
WS_kts =  RunAvg_WS_KPH_250ms /1.852

rain12sec = Table12.RAIN12SEC(1)/12 *0.3
rain1minuut = Table1.RAIN_ONE_MINUTE(1)

twaalf_sec_avg_RunAvg_WS_KPH_250ms = Table12.WS_KPH_S_WVT(1)

'count the occurrences of each mode and put the counts into
'an array
If Precepitation_type = -10 Then Mode(1) = Mode(1) + 1
If Precepitation_type = 10 Then Mode(2) = Mode(2) + 1
If Precepitation_type = 20 Then Mode(3) = Mode(3) + 1
If Precepitation_type = 30 Then Mode(4) = Mode(4) + 1
If Precepitation_type = 40 Then Mode(5) = Mode(5) + 1
If Precepitation_type = 50 Then Mode(6) = Mode(6) + 1

'use MaxSpa to find the maximum of the Mode array
'the second destination variable is the Location
'within the array where the Max occurs
MaxSpa (DestMaxSpa, 6, Mode(1))
'Return a mode, based on which index in Mode() holds the max
If DestMaxSpa(2)= 1 Then Lufft_R2S_Mode = 0
If DestMaxSpa(2)= 2 Then Lufft_R2S_Mode = 10
If DestMaxSpa(2)= 3 Then Lufft_R2S_Mode = 20
If DestMaxSpa(2)= 4 Then Lufft_R2S_Mode = 30
If DestMaxSpa(2)= 5 Then Lufft_R2S_Mode = 40
If DestMaxSpa(2)= 6 Then Lufft_R2S_Mode = 50

'twaalf_seconden_temp = twaalf_sec.AirTC(1,1)
'AvgRun (RunAvgTC12sec,1,twaalf_seconden_temp,5)
'Minutely_Rain=Minutely_Rain
'Hourly_Rain=Hourly_Rain+minute_avg_WS_kph
'Daily_Rain=Daily_Rain+minute_avg_WS_kph
'Monthly_Rain=Monthly_Rain+minute_avg_WS_kph
'Total_Rain=Total_Rain+minute_avg_WS_kph

'If TimeIntoInterval (0,1,Min) Then Minutely_Rain=0
'If TimeIntoInterval (0,1,Hr) Then Hourly_Rain=0
'If TimeIntoInterval (0,1440,Min) Then Daily_Rain=0'change the zero to 9 if you want rainfall total at 9am
'If RTime(5)=0 AND RTime(4)=0 AND RTime(3)=0 Then Monthly_Rain=0

'Call Data Tables and Store Data
If TimeIntoInterval(0,1,Min) Then Mode(1)=0
If TimeIntoInterval(0,1,Min) Then Mode(2)=0
If TimeIntoInterval(0,1,Min) Then Mode(3)=0
If TimeIntoInterval(0,1,Min) Then Mode(4)=0
If TimeIntoInterval(0,1,Min) Then Mode(5)=0
If TimeIntoInterval(0,1,Min) Then Mode(6)=0
If TimeIntoInterval(0,1,Min) Then Lufft_R2S_Mode=0
If TimeIntoInterval(0,1,Min) Then DestMaxSpa(2)=0

CallTable Table1
CallTable Table10
CallTable(event)
CallTable Upload
NextScan
SlowSequence
Scan (12,Sec,0,0)

deltawind = twaalf_sec_avg_WindDir - lastwind
lastwind = twaalf_sec_avg_WindDir
deltaD = deltawind 'Default for Normal variation not crossing North
If deltawind < -180 Then deltaD=deltawind+360 'Gone through North from West to East.
If deltawind > 180 Then deltaD=deltawind-360 'Gone through North from East to West.


AddPrecise (WindD,deltaD)
AddPrecise (WindD50,deltaD)
Move (WindDHist(2),4,WindDHist(1),4)
Move (WindDHist50(2),49,WindDHist50(1),49)
WindDHist(1)= WindD
WindDHist50(1)= WindD50

MaxSpa (MaxD,5,WindDHist())
MaxSpa (MaxD50,50,WindDHist50())
MinSpa (MinD,5,WindDHist())
MinSpa (MinD50,50,WindDHist50())
AvgSpa (AvgWindD,5,WindDHist())
AvgSpa (AvgWindD50,50,WindDHist50())

mostbacked = (MinD(1)+36000) MOD 360
mostbacked50 = (MinD50(1)+36000) MOD 360
mostveered = (MaxD(1)+36000) MOD 360
mostveered50 = (MaxD50(1)+36000) MOD 360
AvgRunWindD = (AvgWindD+36000) MOD 360
AvgRunWindD50 = (AvgWindD50+36000) MOD 360
If ABS(WindD)>34200 Then WindD = twaalf_sec_avg_WindDir
If ABS(WindD50)>34200 Then WindD50 = twaalf_sec_avg_WindDir

CallTable Table12
NextScan
EndProg

 


JDavis Oct 16, 2020 01:21 PM

You will end up getting skipped scans, because 4 subscans at 250ms adds up to 1 second by itself. The other items in the 1 second scan will put you past the limit.

I suggest trying to fit all of your high priority measurements in a 250ms main scan. I just tried it in the compiler, and it appears that the measurements will all get done in time.


Makada Oct 16, 2020 02:33 PM

Hi JDavis,

Thanks for your reply.

If a 250ms Main scan is in use, is it valid to use "if iftime(0,1,sec) then" instead of a slow sequence for sensors which i dont want in the fast Main scan?

For example a pulse sensor which cant be in a slow sequence.

Is it with a slow sequence scan the sensor is read with that scanrate, and with if iftime the sensor is read at e.g. 250ms but doesnt update the data at that rate?

With kind regards.


Makada Oct 19, 2020 02:42 AM

Hi JDavis,

I have the Main scan set to: (250,msec,8,0) and a slowsequence of 1 second.

But the live data is updating very unpredictable.

But i dont have skipped scans.

I also see in the connect screen the recnum is counting sometimes in steps of 3 instead of 4 (4×250ms is 1 second)

I have added a counter in my crbasic script: counter=counter+1

The counter data is also very unstable, sometimes starting at 2, or just showing 1, 3, 0 instead of 0,1,2,3 etc.

It looks like it is updating most of the time at 500ms...

What can i do to have it run smooth?

I have set the graphics option in RTMC to high speed and disabled animation.

Increased the buffer size etc.

When i make a crbasic script with just the voltdiff sensors at 250ms it is running much more smooth.

Am i right in thinking the script takes too long to update at that scanrate?

MeasureTime= 6.200

ProcessTime= 3.730

MaxProcTime= 34.815


Makada Oct 19, 2020 12:48 PM

When i set the scan buffer option to zero it is much more smooth.

Or isnt it smart to set it to zero?

With kind regards.

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