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Appendix A. Door Switch

A.2.2 Edlog

;{CR10X}

; File name = Door Switch CR10X.csi 7Nov2005

; Door Switch Wiring

; +5V black - power to door switch

; C1 black - signal to control port 3

*Table 1 Program

01: 1 Execution Interval (seconds)

1: Set Port(s) (P20) ; Configure control ports as inputs or outputs

1: 9999 C8..C5 = nc/nc/nc/nc

2: 9998 C4..C1 = nc/nc/nc/input

; Measure Door switch

2: If Flag/Port (P91) ; (0=low=closed, 1=high=open)

1: 41 Do if Port 1 is High

2: 30 Then Do

3: Z=F x 10^n (P30)

1: 1 F

2: 00 n, Exponent of 10

3: 1 Z Loc [ DOORopen1 ]

4: Else (P94)

5: Z=F x 10^n (P30)

1: 0 F

2: 00 n, Exponent of 10

3: 1 Z Loc [ DOORopen1 ]

6: End (P95)

; Two of many possible methods to output the status of the door open switch

; - assumes 5 minute data:

; Method #1: If the door is open even one reading during the output interval, output a 1

; for the Door variable

; Method #2: Door open status may be recorded as a fraction of the output interval

; (between 0 and 1) using the Histogram instruction.

; Method #1 ==================================

7: If (X<=>F) (P89)

1: X Loc [ DOORopen1 ]

2: 1 =

3: 1 F

4: 30 Then Do

8: Z=F x 10^n (P30)

1: 1 F

2: 00 n, Exponent of 10

3: 2 Z Loc [ DOOR_out ]

A-6

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 47 48

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