LabVIEW
3 way vertical toggle switch
Avon,
I have suggested a good solution over a month ago.
I made now a simple example that shows the idea, I think it works quite well and incorporates your desired functionality:
up: on while pressed
center: off
bottom: on
The switch is actually two vertically stacked boolean buttons containing custom graphics for the true and false states to give the desired appearance. The upper button is set to switch until released and the lower button is set to switch when pressed. They are grouped for easy handling.
The diagram contains some logic to achieve the desired result:
The output is the logical OR of the two butons.
If the upper button is pressed while the lower is on, the lower is turned off via a local variable.
The rest just falls in place.
See for yourself in the attached example (LabVIEW 6.1). Of course the graphics could be improved, I only spent a few minutes on this. 🙂
Modify as needed.
I have suggested a good solution over a month ago.
I made now a simple example that shows the idea, I think it works quite well and incorporates your desired functionality:
The switch is actually two vertically stacked boolean buttons containing custom graphics for the true and false states to give the desired appearance. The upper button is set to switch until released and the lower button is set to switch when pressed. They are grouped for easy handling.
The diagram contains some logic to achieve the desired result:
See for yourself in the attached example (LabVIEW 6.1). Of course the graphics could be improved, I only spent a few minutes on this. 🙂
Modify as needed.
It might be useful to combine the two switches into a cluster. Now it is also easy to even make an array of threeway switches as in the attached example (LabVIEW 7.1).
(Also not that in the previous example above, you can avoid a few unecessary writes to the local variable if the input to the case structure is the logical AND of the two booleans. See attached modification, also LabVIEW 7.1)
(Also not that in the previous example above, you can avoid a few unecessary writes to the local variable if the input to the case structure is the logical AND of the two booleans. See attached modification, also LabVIEW 7.1)
Message Edited by altenbach on 05-21-2005 11:10 AM
Well, there is one value for each of the three positions, for a total of three possible output values. 😉
@aurelia wrote:
since there is now 3 values for each position of the switch?
The output is an integer that you can wire directly to the selector terminal of a case structure. Now you can create as many cases as you want, e.g. one for each state (don't forget to define one of them as the default case).
