hi everybodylab view

[jurong]

hi everybody

Current, I'm rushing a final year project and is in need of assistance urgently, as the deadline is just round the corner. Does anyone knows how to create an application running from -5 to 105 and from 105 to -5 again?

[tst]

I am not going to write your program for you. If this is a serious project then I'm sure you'll need to write some more complex programs and you will just have to learn how to do that. As for pointers for how to do this, try creating a while loop which will run until your condition has been met. If you just want to get it done faster, you could probably use 2 seperate loops for the 2 seperate conditions. You can also try looking up "shift registers" to see how they can help. You can find many examples for how to work with LabVIEW in the Help>>Find Example menu item.

To learn more about LabVIEW, I suggest you try searching this site and google for LabVIEW tutorials. Here, here, here, here and here are a few you can start with and here are some tutorial videos. You can also contact your local NI office and join one of their courses.
In addition, I suggest you read the LabVIEW style guide and the LabVIEW user manual (Help>>Search the LabVIEW Bookshelf).

[devchander]

Probably you should give more detail on the requirement, rather than the criticality and urgency you are facing!

80% your mail describes your urgency and 20% the real problem

also tell us, what you have done till now. If you are struck up somewhere, we could help you

Message Edited by devchander on 10-13-2006 03:08 AM

[jurong]

Really thanks for all of ur advices. I  have attached the diagram which my group member have done so far. The block diagram we created is using for loop and is able to count from -5 to 105 only. What can we do to make the program runs back to -5?

[devchander]

Do as shown in the vi

Regards,

Dev

[tbob]

Learn how to use shift registers.  It is easier than doing all the math.  I don't want to write the entire application for you since you are a student.  So I have given you a start to show how shift registers work.  After the loop executes one iteration, the shift register value on the right is transfered to the left, and the loop executes again with this new value.  This happens over and over until the loop stops.  This code will count up to the End value.  Now it's up to you to do the rest.  Hint: use a case structure to decide when to subtract instead of add and when to check the stop condition with <= instead of >=.

Message Edited by tbob on 10-13-2006 10:35 AM

[jurong]

hey!! My group have overcome the obstacle. Thanks again for ur encouragement and hints to get us moving.

Right now, is it possible to use labview  to capture data/readings from a fieldbus device in every interval of 0.3 difference into a table format, when the application is running from -5 to 105 and 105 to -5? If it is possible, any guides on which function is more suitable for us to use?

[TCPlomp]

Why do you use the formula box?
It is way faster (and your grade should be higher) when you use native LV primitives, you are now doing something Rube-Goldberg alike...
This is better:

Now in every iteration you should read the cFpoint fieldbus

Ton

Message Edited by TonP on 10-16-2006 01:32 PM

Message Edited by TonP on 10-16-2006 01:35 PM

[jurong]

Cool. I will edit the diagram.

Do u know how to capture data/readings from a fieldbus device in every interval of 0.3 difference into a table format, when the application is running from -5 to 105 and 105 to -5?

[TCPlomp]

Hi Jurong,

I don't have any experience with Fieldpoint.
But can you read something  at all from the fieldpoint (in MAX (measurement and automation explorer))?

Ton