how to record number of times for Case switching

[jetfire]

Hi everyone,

i am using to case stuctur for switching between case 1 und case 2, want to record that how many times switchs it for case 1 →case 2 → case1,for example,1th case 1 →case 2 → case1,2th case 1 →case 2 → case1...

n-th case 1 →case 2 → case1，how to complete this function？if f anyone can give me some ideas that would be appreciated.

thanks in Advanced

Note：Labview 2009 sp1

[GerdW]

Hi jetfire,

maybe some pseudo-code will help:

IF case_now=case2 AND case_before=case1 THEN Increment Counter

As usual:

Show what you have programmed so far and we will help with adjustments/hints.

As long as you only describe your homework you will only get textual descriptions of the solution...

[jetfire]

thank your for your reply,here i posted my code,i want to using array controller for case switching with different period(period:case1→case2→case1，the index of  array controller indicates N th of Period,can your give me some advise？

thanks

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@GerdW wrote:

Hi jetfire,

maybe some pseudo-code will help:

IF case_now=case2 AND case_before=case1 THEN Increment Counter

As usual:

Show what you have programmed so far and we will help with adjustments/hints.

As long as you only describe your homework you will only get textual descriptions of the solution...

---

[GerdW · Accepted solution]

Hi jetfire,

as I wrote before:

[jetfire]

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@GerdW wrote:

Hi jetfire,

as I wrote before:

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thank you,i have a question about your code,why ist left shift register 3 ,right only 2 for case switching？

[GerdW]

Hi jetfire,

you should read the context heklp on shift registers. There are 3 shift registers used in the code...

You can drag down the left side of the shift register to access older values (not just of the iteration before, but also i-2...)! As given in the pseudo code you need to access the current vaule as well as the vlaue of the iteration before thus I oulled down the shift register terminal to show one more output...

[jetfire]

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@GerdW wrote:

Hi jetfire,

you should read the context heklp on shift registers. There are 3 shift registers used in the code...

You can drag down the left side of the shift register to access older values (not just of the iteration before, but also i-2...)! As given in the pseudo code you need to access the current vaule as well as the vlaue of the iteration before thus I oulled down the shift register terminal to show one more output...

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ok,thank you! i will immediately read about  shift registers