Boolean switch's that are timed

[prithvibasak]

I need to control a heater to be turned on for 60 seconds, and then be turned off for 120 seconds, and then the operation be repeated for a number of cycles. My main loop runs continuously with a delay of 50 ms, and needs a boolean signal from the switch continuously, so there is no possiblity  of placing a wait or time elapsed function in this loop. When I try calling a subVI that has a delay, the output to my main loop would be delayed. Would anyone be able to recommend me in the right direction. 

[James.M]

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@prithvibasak wrote:

there is no possiblity  of placing a wait or time elapsed function in this loop

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I haven't looked at your code yet, but the Elapsed Time VI doesn't cause your program to wait, so why wouldn't this work?

[James.M · Accepted solution]

Just do it like this. It initializes False, after time has elapsed, it switches to True, and so on.

This could use some clean-up with the Select nodes, but it gets the job done. This results in False for 120, then True for 60 seconds, rinse and repeat.