Campbell CR850 - Page 246

Section 7. Installation
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Minimum(1,AirTemp_C,FP2,0,False) 'Stores temperature minimum in low
'resolution format
Sample(1,DeltaT_C, FP2) 'Stores temp difference sample in low
'resolution format
Sample(1,HowMany, FP2) 'Stores how many data events in low
'resolution format
EndTable
BeginProg
'A second way of naming a station is to load the name into a string variable. The is
'place here so it is executed only once, which saves a small amount of program
'execution time.
SiteName = "CR1000SiteName"
Scan(1,Sec,1,0)
'Measurements
'Battery Voltage
Battery(Batt_Volt)
'Wiring Panel Temperature
PanelTemp(PTemp_C,_60Hz)
'Type T Thermocouple measurements:
TCDiff(AirTemp_C,1,mV2_5C,1,TypeT,PTemp_C,True,0,_60Hz,1,0)
TCDiff(AirTemp_F,1,mV2_5C,1,TypeT,PTemp_C,True,0,_60Hz,1.8,32)
'Convert from degree C to degree F
AirTemp2_F = AirTemp_C * 1.8 + 32
'Count the number of times through the program. This demonstrates the use of a
'Long integer variable in counters.
Counter = Counter + 1
'Calculate the difference between air and panel temps
DeltaT_C = AirTemp_C - PTemp_C
'Control the flag based on the difference in temperature. If DeltaT >= 3 then
'set Flag 1 high, otherwise set it low
If DeltaT_C >= 3 Then
Flag(1) = high
Else
Flag(1) = low
EndIf
'Turn LED connected to Port 1 on when Flag 1 is high
If Flag(1) = high Then
PortSet(1,1) 'alternate syntax: PortSet(1,high)
Else
PortSet(1,0) 'alternate syntax: PortSet(1,low)
EndIf