LabVIEW – BOOLEAN CONTROL AND INDICATOR

In my previous blog I gave a short intro about LabVIEW and how make our own program using LabVIEW.

Today we are going to learn “how to make front panel attractive by changing the colour of Boolean control and indicator.

It’s necessary to understand what is control and indicator and how to identify.

 Let’s get started.

CONTROL - INPUT

Controls are used to control the functions, by providing input  to the controls in case of a push button(Boolean control) only two type of signal or command can be provided as input to the functions “ON”and”OFF”(HIGH and LOW)

If you see deep inside the LabVIEW control icon in Block diagram window the arrow mark on the icon moves outward.

This image shows the control icon, well I tried to present in the best way as I can.

LabVIEW has disadvantage regarding Enlargement of functions in Block diagram window. That means we cannot zoom functions in Block diagram window.

Similar to a Transmitting Antenna (half duplex mode) LabVIEW controls is used to send data to the functions.

INDICATOR – OUTPUT

Indicators are used to display the output of a function.

Boolean control uses led for Indication. When the output signal is 1 or HIGH the Led glows. Or else led is in OFF state.

Indicators are only for Indication (Boolean) where as other indicator such as Numeric, Array, String. They display Numeric values, Array elements, and strings.

If you see deep inside the LabVIEW indicator icon in block diagram window the arrow mark on the icon moves inside.

Know we are clear with controls and indicator. I would like show all controls and indicator present in Boolean function

In this above image all controls and indicators are attractive and colour full well you can also use this trick for your LabVIEW project.

Steps to Change Colour for Boolean controls & indicators

Let’s use Boolean controls and indicator. We can also use the same for other types or control and indicators.

Step 1 : Place your Boolean control (push button).

Step 2 : Right click on your target control or indicator (push button).

   

Step 3 : Left click on properties.

Step 4 : A Boolean properties window appears on the screen.

Step 5 : We can see the coloring option which contain two empty boxes

On color  and

Off color

Left click “On color” a color pallet appears choose one of them. For example I choose red color so when button is ON it’s appears in red color.

Step 6 : Suppose I am changing the state of the button from ON to OFF condition. Button comes to its original colour because no colour assigned for off state.

Step 7 : Left click “OFF colour” a colour pallet appears which assigns colour for the button when it’s in off state. Here I choose blue colour.

Step 8 : In Boolean property window “show Boolean text “check box is available. Which displays the present state of the push button/led. Text colour can also be changed.

Boolean indicators can also be color by following above procedure.

Well friends this tutorial ends here if you still have problem in understanding watch videos in my youTube channel “ANK LAB”.my channel link is given below.

  

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What’s next?

In my next blog/youtube video I will explain different type of Boolean functions and how to use then (practical demonstrations also included)

Well some time in my blog/ videos I may split up in two or more sub-topic to make content sort and simple. Stay with me and support me. Feel free to ask questions.

LabVIEW program file
 Download

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