Reset one while loop and keep the other running

[Relient]

I am looking to run two while loops and reset one if needed. In my attached file I want to reset while loop 1 and the 'get date time'  and keep while loop 2 going. Any suggestions of how to do this?

[josborne]

You mean like this:

[RavensFan]

I'd recommend just putting a select statement in the loop with a reset button.  Store the original timestamp in a shift register.  In the loop, if the Reset button is true, put the new timestamp on the shift register, otherwise put the current value in the shift register back in.

[mikeporter]

The problem with the approaches that are being recommended is that while they will work right now they don't scale very well. Use an event structure and have a reset event that re-does everything that might need to be reset in the application. The event itself could be a value change event of a button, or a user-defined event, doesn't matter, either would work. Now any place that might need to reset the program only has to tug on that event to do the reset.

Mike...

[altenbach]

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@Relient wrote:

I am looking to run two while loops and reset one if needed. In my attached file I want to reset while loop 1 and the 'get date time'  and keep while loop 2 going. Any suggestions of how to do this?

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What is the meaning of "reset a loop"? You probably want to reset the timer, which is completely something else. You code makes no sense! Having two loop spinning like crazy, consuming all the CPU they can get, with nothing to show for it later.

Can we take a step back and start with your requirements as seen from the operator point of view. What should the program do? How is it operated during run? What should it display? How should it react to user inputs? When should it all end?

I am with Mike here. Most likely all you need is a single loop and a proper state machine code architecture.

[Yamaeda]

Apart from the need of a Wait in both loops, place a Reset button in loop one and connect to a Case, if True, send out a new Time, if false use the old. Feed time to a shift register to get a new start time.

/Y