jaw

thanks alot for your help

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The most simple way - to change the status of the stop button and add its local variables in sequence.

thanks alot for your help

hi all i got a question hope u all wont laugh at me. i like to ask is labview able to capture data from microsoft excel and use the data to do some programming??? plaease advice. thanks alot :worship:

hi everyone i have a problem here which i really cant solve. this programme actually is my sequence programme but i need to add a stop button to stop the operation at any one of the flat sequence i tried but cant solve. anyone knows please help me. THANKS in advance :worship:

Download File:post-4922-1147143769.vi

Good example mross, at the first glance it looks rather complicated but includes everything, just worth of a "two-houres-LV-basic-course" :thumbup:

Jaw, your next step would have been to tell your computer to switch off the leds, means wirting a false to a local variable of the led (rmd on led, select "crate/local variable"). Seems you missed two things:

- how to create local variables in LV

- the computer doesn't do anything unless you tell him exactly what to do, even with 3+GHz processors they are still dumb

Didier

hmm do u know how to create latching circuit using labview?? please advise

You haven't stated what your project needs are. That could be helpful.

The VI was helpful. You said LEDs and I thought you meant actual LEDs attached digital outputs of a DAQ card, not boolean indicators on the front panel as you have.

You are missing the concept of dataflow and the use of wires for sequencing. Try to stop using sequence structures they are bad form the way you are using them.

Dataflow progamming is not like sequential text programing. No gotos.

A function or subvi runs when all its inputs are filled with data.

I sympathize, you must be trying to make sense of this with no mentors around. Been there.

You should turn on the highlighting (light bulb symbol at top of block Diagram in menu) to watch how the data moves about the VI.

There are about a million ways to do this. I am not saying you want to copy what I did. It is more to demonstrate dataflow for you. Play with the vi a bit. You will need to extract both the top level vi and the subvi to the same folder.

i thank you for your time to help me, but some how this one like not wad i needed. :worship:

Good example mross, at the first glance it looks rather complicated but includes everything, just worth of a "two-houres-LV-basic-course" :thumbup:

Jaw, your next step would have been to tell your computer to switch off the leds, means wirting a false to a local variable of the led (rmd on led, select "crate/local variable"). Seems you missed two things:

- how to create local variables in LV

- the computer doesn't do anything unless you tell him exactly what to do, even with 3+GHz processors they are still dumb

Didier

so how do i create local variable in lv?

:!: Show us what you've already done and we'll try to point you in the right direction.

this is one that i tried but does not meet the requirement of my project needs. mine is more like making it a latching circuit and run step by step.

Download File:post-4922-1146794379.vi

LabView Basics

Maybe you shouldn't procrastinate, go thing this project isn't very hard. Read the online basics course and you should be able to do this with no problems. Pay attention to the Express VI's for data acquisition which should make this a very easy project for you.

i did read through all the basics already. but i did not see any that could run in sequence. i need one that is able to light up one by one.something like when you finish this step the task is complete it will go on to the next step. please help me please. i only have 1 week left.

How to use the LAVA Website

... we are not your "Homework Hustlers", thanks :thumbdown:

EDIT: Could any admin remove the duplicate in Forum Feedback & Support?

please help me if u can. cause i have been trying hard but to no avail... :headbang:

:worship: hi all!i am a newbie to labview and really need help for my final year project. i need to solve this exercise relevant to my project. i have to light up 5 leds in sequence. each time only one turn on. e.g. first light up, followed by second and the rest off, followed my third led on the rest off. and the same for 4th and 5th. any kind ones who knows please do and post me the VI asap in the forum. thanks a lot.