pass-through of a Subvi to the next level with continuously running loops
Hi all
It is a very simple question, for some reason, data available as a Subvi indicator doesn't it up level vi. I think it might be something to do with the while loop I use, but I cannot understand, any help will be appreciated. I don't think I quite understand how data comes out of a loop constantly running.
GPSdisplay runs a driver called GPS.vi (im not worried for my event structure immediately, which could be bad, but I am yet to test this bit yet) 1 probe should have the values of GPSCluster
Loop in GPS.vi. GPSCluster (sensor 2) is updated correctly
I can't work on why the data is not passed to GPSCluster at the top of page vi
Hi bennymacca,
I think that you are on the right track with a FGV. You can do quite easily with GPS vi you have.
Before going further, your GPS while loop will return only the last reading and because the Boolean value of "Read" output state is set to FALSE, it will not stop. You see it out at all? The logic, I read, once entering this while loop, that he will not stop until said.
There are 3 options you can try.
(1) use a FGV, because you are looking in. To do this, you need to change the boolean TRUE State and set records in the GPSCluster - to analyze the information around, holding each time the vi is called and you leave. Outside the while loop you will thread to the top of the cluster to the indicator that you want to collect (OR you can have it inside the case statement where you read - be careful here, if).
(2) in the main code, above the frame of the sequence, you can place the GPS vi while loop (the ' read' a), given the State of the boolean connected to a local variable of the Stop button. This while loop will start depending on how feels LV, wire, one line error for the two while loop and Frame (indicating that the two are to run in a parallel mode), OR you can put it in a case statement and say 'go' when you want to start playback. In this while loop, you can then copy the data to read directly in your variable Cluster that it is generated.
But with (2), you move yourself away from the purpose of the GPS vi, which would be to bring all the features of the GPS functionality in a vi - which is a good idea.
(3) put a condition on the State of the Boolean case "Read" statement - just make it TRUE when you want to stop reading the data (do you have a time or a condition, you can check here?). Even by doing this, you would / may still need to shift on your lease registers loop to keep the data for each iteration.
I hope that all of this help. See you soon. David.
Tags: NI Software
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