Help with timing controls

[Adam_Keller]

Hi,

I'm new to this forum, so hopefully this is in the right place.

I am using an Ni 6009 with labview 2012 to turn on/off 4 valves. I am to the point where I can manually turn the valves on/off in the front panel, but what I need to do is have a timed cycle. 

What I need to have is for example:

1) Valve 1 open, Valve 2 open, Valve 3 closed Valve 4 open.

2) Wait x amount of seconds.

3) Valve 1 open, Valve 2 closed, Valve 3 closed Valve 4 open.

etc.

How can I make this happen?

I'm fairly new to this program, so any help would be greatly appreciated.

This is what my block diagram looks like, it is attatched.

[Dennis_Knutson]

I would suggest you use an array of clusters. The cluster would have a Boolean array and a numeric for the delay value. You only need a single DAQmx Write that you pass a 1D array to - representing all channels for a single state. Do not configure, start, close with each iteration of a for loop. Wire the Time value to a Delay function. An array is passed into s for loop and the auto-index feature will give you one row each iteration.

[Adam_Keller]

Great, I will try that and post my results.

Thanks!

[Adam_Keller]

Am I to have 4 booleans within each cluster? Then have x amount of clusters in the array?

[Adam_Keller]

I think I almost have this complete but I am getting an error message that I am unfamiliar with, can someone direct me on how I can fix this error, I have a picture of what I have and the message I am receiving. I'm having trouble connecting the physical channels.

[robo_Jeff]

Try creating the task in MAX, where you can specify the 4 lines (Dev1/port0/line0:3).  Then in your DAQmx Create Virtual Channel.vi (in LabVIEW), wire the task you created into the "task in" input as a constant. (It will auto-populate in the pull-down menu.)

[apok]

[Adam_Keller]

How did you unbundle the array??? Im getting that it is of two different types, one is an array and the other is a cluster.

[Dennis_Knutson]

The only difference is that you used the unbundle function and the example uses unbundle by name. Does not make a bit of difference.

[Adam_Keller]

I got this working, but is there a way for the array to reiterate? I want this sequence (picture is attatched) to occur over and over until the process needs to stop. I may need to have to run this for hours.