Campbell Scientific 4WFBS120, 4WFBS350, 4WFBS1K 4 Wire Full Bridge Terminal Input Modules User Manual

Page 20

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4WFBS120, 4WFBS350, 4WFBS1K 4 Wire Full Bridge Terminal Input Modules (TIM)

12: Average (P71)
1: 1

Reps

2: 1

Loc [ mVperV ]


13: If Flag/Port (P91)

;When average is calculated,

1: 10

Do if Output Flag is High (Flag 0)

;also send it to Final Storage

2: 10

Set

Output

Flag

High


14: Set Active Storage Area (P80)

;Direct Output to Final Storage

1: 1

Final Storage Area 1

2: 11

Array

ID

;set Array ID = 11 for zero data


15: Real Time (P77)
1: 110

Day,Hour/Minute


16: Sample (P70)
1: 1

Reps

2: 2

Loc [ mVperV_0 ]


17: End (P95)

18: End (P95)

End Program

Example Program 4.5. 21X ¼ Bridge Strain with 1 rep and zero offset

;{21X}
*Table 1 Program
01: 1

Execution

Interval

(seconds)

;Other measurements could be inserted here or before the Output section

1: If Flag/Port (P91) ;On the first execution (Flag 1 is low)
1: 21

Do if Flag 1 is Low

;or when user sets Flag 1 low

2: 1

Call

Subroutine

1

;call the zeroing subroutine


2: Full Bridge (P6) ;Measure the strain gage
1: 1

Reps

2: 2

± 15 mV Slow Range

3: 1

DIFF

Channel

4: 1

Excite all reps withExchan 1

5: 5000

mV

Excitation

6: 1

Loc [ mVperV ]

7: 1

Mult

8: 0

Offset


3: Z=X-Y (P35)

;Subtract zero reading from the

1: 1

X Loc [ mVperV ]

;measurement

2: 2

Y Loc [ mVperV_0 ]

3: 3

Z Loc [ Vr ]


4: Z=X*F (P37)

;Change Vr from mV/V to V/V

1: 3

X Loc [ Vr ]

2: 0.001

F

3: 3

Z Loc [ Vr ]

14

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