Campbell Scientific 4WFBS120, 4WFBS350, 4WFBS1K 4 Wire Full Bridge Terminal Input Modules - Manual (Page 32)

4WFBS120, 4WFBS350, 4WFBS1K 4 Wire Full Bridge Terminal Input Modules (TIM)
;{CR10X}
;16SGMux.CSI
;This program calculates the strain for 16 quarter strain bridges using4 wire bridge completion modules.
; It takes into account the sensitivity changes due to lead length resistance.
;(1) Sensors:
; 16 strain gauges multiplexed through an AM416
;(2) DataInfo:
; Strain gauges will be measured every 5 seconds.
; Only measurement at top of minute will be stored.
;(3) SubroutineDescrptions:
; Subroutine01: Measures the zero offset strain reading, sets the gauge factor.
; Subroutine02: Outputs processed values to FinalStorage
;(4) Wiring:
; (a) Mux01:
; 10x_12V To AM416_12V
10x_GND To AM416_GND
; 10x_C3 To AM416_ResetEnable 10x_C4 To AM416_Clock
; 10x_H4 To AM416_ComH1 10x_L4 To AM416_ComL1
; 10x_E2 To AM416_ComH2 10x_AG To AM416_ComL2
; First bank example:
; SG+ To H1
SG- To L1
; SGExcite To H2 SGGnd To L2
*Table 1 Program
01: 5 Execution Interval (seconds)
;Loop through the strain gages using the AM416:
1: Do (P86)
1: 43 Set Port 3 High ;
Reset and Enable the AM416.
2: Beginning of Loop (P87)
1: 0 Delay
2: 16 Loop Count
3: Do (P86)
1: 74 Pulse Port 4 ;
Clock forward to the next bank on the AM416.
4: Excitation with Delay (P22) ; Delay to allow relay connection to settle.
1: 2 Ex Channel
2: 0 Delay WITHEx (units = 0.01 sec)
3: 5 Delay After Ex (units = 0.01 sec)
4: 0 mV Excitation
5: Full Bridge (P6)
1: 1 Reps
2: 2 7.5 mV Slow Range
3: 4 DIFF Channel
4: 2 Excite all reps withExchan 2
5: 2500 mV Excitation
6: 1 -- Loc [ mVPerVG01 ]
7: 1.0 Mult
8: 0.0 Offset
6: End (P95)
7: Do (86)
1: 53 Set Port 3 Low ;
Deactivate the AM416.
;..
8: If Flag/Port (P91) ;
If first time through then call zero routine.
1: 21 Do if Flag 1 is Low
2: 1 Call Subroutine 1
9: Beginning of Loop (P87) ;
This Loop calculates uStrain values:
1: 0 Delay
2: 16 Loop Count
10: Step Loop Index (P90)
1: 1 Step
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