Campbell Scientific 229 Water Matric Potential Sensor and CE4/CE8 - Manual (Page 21)

229 Heat Dissipation Matric Water Potential Sensor
;{CR10X}
;Program to read 16 229-L sensors using 1 AM16/32 multiplexer
;and 1 CE4 or CE8 constant current interface
;Manually set Flag 1 high to force readings
*Table 1 Program
01: 30
Execution Interval (seconds)
1: Batt Voltage (P10)
1: 1
Loc [ Batt_Volt ]
2: If time is (P92)
;Set Flag 1 high each hour
1: 0 Minutes (Seconds --) into a
2: 60 Interval (same units as above)
3: 11 Set Flag 1 High
3: If Flag/Port (P91)
1: 11
Do if Flag 1 is High
2: 30 Then Do
4: Do (P86)
;Turn on AM16/32
1: 4 Set Port 2 High
5: Beginning of Loop (P87)
;Loop of 16 for 16 sensors on AM16/32
1: 0 Delay
2: 16 Loop Count
6: Do (P86)
;Advance to next multiplexer channel
1: 73 Pulse Port 3
7: Temp (107) (P11)
;Measure reference temperature
1: 1 Reps ;This is the same instruction
2: 5 SE Channel ;for both the CR10X and 107
3: 1 Excite all reps w/E1
4: 2 Loc [ Tref_C ]
5: 1.0 Mult
6: 0.0 Offset
8: Thermocouple Temp (DIFF) (P14)
;Read initial temperature
1: 1 Reps
2: 21 10 mV, 60 Hz Reject, Slow Range
3: 1 DIFF Channel
4: 1 Type T (Copper-Constantan)
5: 2 Ref Temp (Deg. C) Loc [ Tref_C ]
6: 3 -- Loc [ Tinit_1 ]
7: 1.0 Mult
8: 0.0 Offset
9: Do (P86)
;turn on CE8
1: 41 Set Port 1 High
10: Excitation with Delay (P22)
;Delay of 1 second
1: 1 Ex Channel
2: 0000 Delay W/Ex (0.01 sec units)
3: 100 Delay After Ex (0.01 sec units)
4: 0 mV Excitation
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