Campbell Scientific 4WFBS1K 4WFBS120, 4WFBS350, 4WFBS1K 4 Wire Full Bridge Ter - Page 32

x_12V To AM416_12V

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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) ; 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 Delay to allow relay connection to settle. 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 ; ;.. 8: If Flag/Port (P91) ; 1: 21 Do if Flag 1 is Low 2: 1 Call Subroutine 1 Deactivate the AM416. If first time through then call zero routine. 9: Beginning of Loop (P87) ; 1: 0 Delay 2: 16 Loop Count 10: Step Loop Index (P90) 1: 1 Step This Loop calculates uStrain values: 26

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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
26