LabVIEW
boolean
Hi Linda,
you could use a local variable of the boolean A. When the sub-vi returns (or in parallel) you write a FALSE to the local of A (booleans are using TRUE and FALSE instead of 0/1).
You can also set the switch to any of the 'Latching' mechanical behaviours, but be aware of problems when trying to use locals together with latching 🙂
you could use a local variable of the boolean A. When the sub-vi returns (or in parallel) you write a FALSE to the local of A (booleans are using TRUE and FALSE instead of 0/1).
You can also set the switch to any of the 'Latching' mechanical behaviours, but be aware of problems when trying to use locals together with latching 🙂
Hi Linda,
usual way in LabView: wire a FALSE constant!
Have a nice weekend while reading the manual 🙂
usual way in LabView: wire a FALSE constant!
Have a nice weekend while reading the manual 🙂
Message Edited by GerdW on 02-02-2007 05:00 PM
A local variable won't work IF you want to reset a control in the main VI from within a subVI, and it seems that's what you are trying to do.
There are several possibilities, for example:
- Use a latch action for A, with the disadvantage that A resets once it is read by the code instead of staying on as long as the subVI executes. That might be OK, depending on your application.
- You could feed a reference to A as one of the input parameters to the subVI, the write to a value reference inside the subVI whenever needed.
- If you use an event structure, place a two-frame flat sequence in the event for "A:value changed" and place the subVI in the first fram and the terminal for A in the second frame. Make the mechanical action of A "latch when pressed". Now the subVI executes first but the A terminal will only get read (and thus reset to false) immediately afer the subVI finishes.
- ...
If you would tell us a bit more why you think you need this, we might come up with some more alternative solutions. 🙂
