'Demonstration program to show how to use the
'Judd Communications depth senor.
'Wiring diagram:
'Wire      Purpose         Datalogger
'____________________________________
'Clear     Shield          G
'Black     Power -         G
'Red       Power +         +12V
'Green     On/Off          C1
'White     Signal +        3H
'Brown     Signal -        3L

'\\\\\\\\\\\\\\\\\\\\\\\\\ DECLARATIONS /////////////////////////
Public Battery
Public Air_TempC
Public Air_TempF
Public Depth

'Force program to be executed sequentially
SequentialMode
'\\\\\\\\\\\\\\\\\\\\\\\\ OUTPUT SECTION ////////////////////////
'Output Data to table once a minute
DataTable(Table101,true,-1)
  OpenInterval
  DataInterval(0,1,Min,10)
  Average(1, Air_TempF, FP2, 0)
  Sample(1, Depth, FP2)
EndTable

'\\\\\\\\\\\\\\\\\\\\\\\\\ SUBROUTINES //////////////////////////

'\\\\\\\\\\\\\\\\\\\\\\\\\\\ PROGRAM ////////////////////////////

BeginProg

  Scan(5,Sec, 3, 0)
    '-------------------------------------------------------
    'Input Processing
    '-------------------------------------------------------
    Battery(Battery)

    'Turn ON the depth sesor
    PortSet(C1, 1)
    'wait 0.8 seconds for the sensor to output the
    'Air Temp.
    Delay(0,800,MSEC)
    'Air Temp is output in milliVolts, scaled to Kelvin,
    'and then convert to Celsius.
    VoltDiff(Air_TempC, 1, mV5000, 3, True, 0, 60, 0.2, -273)
    'Air Temp is also converted and saved in Fahrenheit
    Air_TempF = Air_TempC * 1.8
    Air_TempF = Air_TempF + 32
    'The depth sensor needs another 1.8 seconds to make up
    'to 10 measurements and perform error checking and
    'temperature compensation.
    Delay(0,1800,MSEC)
    'Distance is output in milliVolts, scaled to inches, and
    'then converted to depth by subtracting the distance
    'measured from the reference distance.
    'Use a multiplier of -.19685 for output in inches
    'and -.5 for ouput in centimeters.
    '
    'The following instruction is configured to output the measured distance in inches
    'To reconfigure the instruction to output depth in inches do the following:
    'Change the multiplier from .1968 to -.1968
    'Change the offset value from 0 to the distance measured
    VoltDiff(Depth, 1, mV5000, 3, True, 0, 60, 0.1968, 0)
    'Turn OFF depth sensor.
    PortSet(C1, 0)

    CallTable Table101
  NextScan
EndProg