Hello,
I have a CR1000 connected to HC2S3, Wndsonic1, CS106 sensors. I am trying to use SDM-CV04 to output the measured variable in 4-20mA that will be fed to an RTU.
I used ShortCut to generate the program, but the scaling values that were generated gave me results that were completely off the mark, so i edited the scaling values and tried again. It seemed to work.
But when i used a multi meter to confirm the values observed on the 'Connect' screen/module with the ones i am getting at Channels 1-4, they dont match AT ALL.
I changed the jumper settings to output current and also checked the SDM address.
I really need help to resolve this.
Do i need to have it connected to the RTU to get correct values.
Please advise.
below is the extract of the scaling(i made) and the code (generated by shortcut)
"
Main Program
BeginProg
'Open Com3 for communications with the
'WindSonic1 Two Dimensional Sonic Wind Speed & Direction Sensor
SerialOpen(Com3,38400,3,0,505)
'Main Scan
Scan(5,Sec,1,0)
'Default Datalogger Battery Voltage measurement 'BattV'
Battery(BattV)
'Default Wiring Panel Temperature measurement 'PTemp_C'
PanelTemp(PTemp_C,_60Hz)
'CS106 Barometric Pressure Sensor measurement 'BP_mbar'
PortSet(4,1)
VoltSE(BP_mbar,1,mV2500,1,1,0,_60Hz,0.240,500)
'HC2S3 (constant power) Temperature & Relative Humidity Sensor measurements 'AirTC' and 'RH'
VoltSE(AirTC,1,mV2500,2,0,0,_60Hz,0.1,-40)
VoltSE(RH,1,mV2500,3,0,0,_60Hz,0.1,0)
If RH>100 And RH<103 Then RH=100
'WindSonic1 Two Dimensional Sonic Wind Speed & Direction Sensor measurements 'WindDir', 'WS_kph', and 'WSDiag'
'Get data from WindSonic1
SerialInRecord(Com3,WSStr,&h02,0,&h0D0A,ByteRet,00)
WindDir=Mid(WSStr,3,3)
WS_kph=Mid(WSStr,7,6)
WSDiag=Mid(WSStr,16,2)
WS_kph=WS_kph*3.6
ChkSumF=HextoDec(Mid(WSStr,20,2)) Eqv CheckSum(WSStr,9,18)
'Set diagnostic variables as needed
If ByteRet=0 Then WSDiag=NAN
Move(SmplsF,9,0,1)
Select Case WSDiag
Case=0
SmplsF=1
Case=1
Diag1F=1
Case=2
Diag2F=1
Case=4
Diag4F=1
Case=8
Diag8F=1
Case=9
Diag9F=1
Case=10
Diag10F=1
Else
NNDF=1
EndSelect
If Not (ByteRet<>0 Imp ChkSumF) Then CSEF=1
'SDM-CVO4 Current/Voltage Output
'Configure SDM-CVO4 for mA output
SCode(1)=255
SCode(2)=255
SDMSIO4(SCode(),1,0,5,320,0,0,2,1,0)
'Scale measurements and load array with mA to be output
CVOut(1)=29.09090909*(BP_mbar-550)+4000
CVOut(2)=161.2903226*(AirTC+39.2)+4000
CVOut(3)=160*RH+4000
CVOut(4)=74.0748*WS_kph+4000
'Send mA to be output to SDM-CVO4
SDMAO4(CVOut(),4,0)
'Call Data Tables and Store Data
CallTable(Table1)
CallTable(Table2)
NextScan
EndProg
"