Campbell CR850 User Manual

Section 7. Installation
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CRBasicExample36. SDI‐12SensorSetup
Public PTemp, batt_volt
Public Source(10)
BeginProg
Scan(5,Sec,0,0)
PanelTemp(PTemp,250)
Battery(batt_volt)
Source(1) = PTemp 'temperature, deg C
Source(2) = batt_volt 'primary power, Vdc
Source(3) = PTemp * 1.8 + 32 'temperature, deg F
Source(4) = batt_volt 'primary power, Vdc
Source(5) = PTemp 'temperature, deg C
Source(6) = batt_volt * 1000 'primary power, mVdc
Source(7) = PTemp * 1.8 + 32 'temperature in deg F
Source(8) = batt_volt * 1000 'primary power, mVdc
Source(9) = Status.SerialNumber 'serial number
Source(10) = Status.LithiumBattery 'data backup battery, V
NextScan
SlowSequence
Do
SDI12SensorSetup(2,1,0,1)
Delay(1,500,mSec)
SDI12SensorResponse(Source)
Loop
EndSequence
EndProg
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Table 27. SDI-12 Sensor Setup -- Results
Measurement
Command from
SDI-12 Recorder
Source Variables
Accessed from the
CR800 acting as a
SDI-12 Sensor
Contents of
Source Variables
0M!
Source(1), Source(2) temperature °C, battery voltage
0M0!
Same as 0M!
0M1!
Source(3), Source(4) temperature °F, battery voltage
0M2!
Source(5), Source(6) temperature °C, battery mV
0M3!
Source(7), Source(8) temperature °F, battery mV
0M4!
Source(9), Source(10)
serial number, lithium battery
voltage
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7.8.3.3 SDI-12 Power Considerations
When a command is sent by the CR800 to an SDI-12 probe, all probes on the
same SDI-12 port will wake up. However, only the probe addressed by the
datalogger will respond. All other probes will remain active until the timeout
period expires.

Campbell CR850 Specifications

General

Brand	Campbell
Model	CR850
Category	Measuring Instruments
Language	English