Array of Booleans

[Clint Eastwood]

Is there a way to know which toggle switches were selected on a frt panel with 6 or so  Sws.  The sw's select a particular test.  I saw an example in the discussion grp to find out which SINGLE element in the boolean array was high ( use Build an array then search 1 d array) .  What if I have 2 or 3 or 4 etc that were selected.  How can I tell boolean sw associated w "turn on pwr suppl1 and Turn on PS 2 " was selected?

Thanks,

Clint

[falkpl]

The way I would do this usually is through the event structure, but you can use a shift register and check equality between itterations as well.

[jcarmody]

Convert the boolean array to a number.  If the first and third switch are on, your result will be five.

[BCho]

Hey Clint,

Paul and Jim have some good suggestions. I agree with Jim though, creating a Boolean array and converting it to a number is a clean way to do what you are attempting to do. I have created a small example that shows how to do this in LabVIEW 8.6. I have also included a picture of the block diagram, in case you have a different version of LabVIEW.

Let us know if this helps.

Ben

Applications Engineering

National Instruments

[TCPlomp]

XOR old and new values. Everything True has changed.

Ton

[Ben]

Another approach would make the array of booleans a cluster of booleans with an appropriate name for each.

Then set up an event for each boolean. The events will be serviced in the order the buttons are clicked.

Ben

[Clint Eastwood]

Thanks everyone.

I played w Event Structure (ES) and I think I got that to work.  I worked off of an example from the Discussion Grps posted back in 2006.  When I 1st posted I didn't think you could get an ES know  which toggle SW "Changed Value".  I thought it only let you know a toggle sw ( Boolean) chg'd.   It does, and the chg value is perfect for what I want to do.

Again, Thanks.