LabVIEW
Urgent !! How do I keep the value generated by one Event case, and use/edit it in other event cases (inside the same Event Structure)??
Shift Registers!
Shift registers are designed exactly for this purpose. You pass data to them from inside the loop and it passes the data to the next loop iteration.
Right click on the edge of the While loop and select, "Create Shift Register". You'll see two nodes appear on both the left and right sides of the While loop. They work in pairs. You can wire a value from inside the While loop/Event structure to the node on the right border and that value will be available in the corresponding register on the left border on the next loop iteration. You can add as many shift registers as needed.
That should be what you need. Let us know if you have any more questions.
Ed
Shift registers are designed exactly for this purpose. You pass data to them from inside the loop and it passes the data to the next loop iteration.
Right click on the edge of the While loop and select, "Create Shift Register". You'll see two nodes appear on both the left and right sides of the While loop. They work in pairs. You can wire a value from inside the While loop/Event structure to the node on the right border and that value will be available in the corresponding register on the left border on the next loop iteration. You can add as many shift registers as needed.
That should be what you need. Let us know if you have any more questions.
Ed
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.
I see.
What you need to do is right click on the tunnel (little blue square) leaving the Event Structure going to the shift register and de-select, "Use default if Unwired". With this option checked, everytime a case runs that does not have a wire connected to the tunnel, the default value for that data type is passed out of the tunnel. (0 for numbers, FALSE for boolean, an Empty string...) Default does not mean pass what ever went through last time.
So uncheck that option and you'll need to wire the value through all of the Event cases. This will keep the value in the shift register. You can do this without unchecking the Default option, but you'll be forced to wire all the cases with it unchecked so you're sure not to miss any.
See if that fixes it.
Ed
What you need to do is right click on the tunnel (little blue square) leaving the Event Structure going to the shift register and de-select, "Use default if Unwired". With this option checked, everytime a case runs that does not have a wire connected to the tunnel, the default value for that data type is passed out of the tunnel. (0 for numbers, FALSE for boolean, an Empty string...) Default does not mean pass what ever went through last time.
So uncheck that option and you'll need to wire the value through all of the Event cases. This will keep the value in the shift register. You can do this without unchecking the Default option, but you'll be forced to wire all the cases with it unchecked so you're sure not to miss any.
See if that fixes it.
Ed
Forget a wire in LabVIEW, forget a semicolon in C. It's all relative.
(but fraustrating when I got stock on something so simple like this, which won't happen in text-based-programming languages).
