Michael Aivaliotis

Link to LabVIEW 8.2.1

Just use your given SN.

Please see here for information on how to attach and upload images into your LAVA posts.

QUOTE(hannibal @ Apr 21 2007, 12:14 PM)

PS: I uploaded this file by YOUSENDIT 'coz I dont know how to insert image. This uploading site will expire in 14 days. Sorry for the inconvenience.

See here:

http://forums.lavag.org/How-to-Insert-Images-in-your-Posts-t771.html' target="_blank">http://forums.lavag.org/How-to-Insert-Imag...Posts-t771.html

QUOTE(Jim Kring @ Apr 20 2007, 10:06 AM)

You should be forewarned that this is not just a place for you to get answers to your questions.

I agree that LAVA is a lot more than "answers to questions", however let's not scare those that want to ask questions. Questions are perfectly fine and acceptable here as long as you are not a homework hustler (HH) - A student that tries to get solutions to homework questions.

QUOTE(Nullllll @ Apr 20 2007, 06:06 AM)

i know i can send email by labview but I mean the user just enter his pass word email and TO : then that VI will be sent can I?

If you know, then why ask? If you have the VI's in your palette then try them. What are you looking for?

What 3rd party program are we talkin' about here?

Try this for learning:

LabVIEW Tutorials

Lot's of stuff out there.

See my related post here:

http://forums.lavag.org/index.php?s=&s...ost&p=28409

QUOTE(Eugen Graf @ Apr 18 2007, 06:35 AM)

Your solution with cluster queue is interesting, but have a disadvantage. My question is: what happens if I only want to change the interface (if user changes program settings) without to send any message to visa?

Are your devices, serial? I think only serial devices really need to be closed to release the port for others to use. GPIB devices don't have to be opened or closed. At least not anymore. Other than Visa Open or Visa Close, I'm not sure what kind of instrument command you want to send.

Regardless. If this is still the case, you can do this with queues as well. Keep in mind that you will need different queues for different types of tasks. The example shown assumes that you are working with the instrument task queue:

http://forums.lavag.org/index.php?act=attach&type=post&id=5545

http://forums.lavag.org/index.php?act=attach&type=post&id=5546 (LabVIEW 8.0)

There are many solutions to your problem. User events can be used as well. However, I would even argue that you don't need parallel tasks anyway. Why can't you just do everything in the main state machine? I'm not sure of the benefit in your case. Perhaps data saving would be better off in parallel if you have lot's of data. What is the speed of the overall system?

QUOTE(JFM @ Apr 5 2007, 08:14 AM)

Tomi, I think you are safe

If I remember correctly, bsvingen did some testing of this in another thread (that I can not currently find).

The result, as I recall them, was that the LV2 global was faster than using queues.

Hmm, I think we should place some bets here. LAVA could use some donations .

My money goes on the queue.

QUOTE(Eugen Graf @ Apr 17 2007, 07:55 AM)

Who can say why I get the timeout event in the first loop, after clicking on "Generate" button?

Your code does not make sense:

1. In the top event structure, you are generating a user event.
   
2. The bottom event structure responds to this and executes the <Command> case.
   
3. The top loop is ALSO registered for the same event. It ALSO responds to the same event however it's too late, the message has already been removed from the queue from the bottom event structure. It then just iterates a timeout.
   

What is the purpose of your design? Multiple recipients? If so, then you need to use a different approach. See attached image:

QUOTE(Tomi Maila @ Apr 17 2007, 07:58 AM)

Agreed.

QUOTE(Eugen Graf @ Apr 17 2007, 08:23 AM)

This is not true. You can have multiple event structures without problems as long as they are not using the same event registration refnum.

QUOTE(Eugen Graf @ Apr 17 2007, 08:23 AM)

Another option is to create the user events in the main task VI and pass this to the other tasks, however register the events at the task level.

QUOTE(Eugen Graf @ Apr 17 2007, 08:36 AM)

You are presenting multiple issues here. Are you trying to get speed and less memory, or are you trying to solve your problem? The reason I'm asking is because you don't need to switch to a completely different architecture to solve your problem. Queues are pretty powerful on their own and still viable for your situation. From what I can see, your problem is that you are mixing your communication mechanisms. Why use "Set Value Property" on top of queues? You already have the pipeline so utilize it. See:

QUOTE(Pablo Bleyer @ Apr 17 2007, 10:05 AM)

Thanks for the info, rolfk and Aristos. Now everything is clearer now. I thought controller references weren't strict types, since there are times when LV seems to know more about them. ;-)

Best regards.

We've just added a [wiki]Control References[/wiki] article on the http://wiki.lavag.org/' target="_blank">LabVIEW Wiki.

QUOTE(Aristos Queue @ Apr 15 2007, 05:33 PM)

Bundle is good most times, but not so good for a typedef. Typedefs would be the real value of this, I'm thinking.

Yes, however I'm concerned about obfuscating the UI and diagram. How would you indicate the groupings?

Doing OOA&D on a coffee maker is a standard classroom topic used my many to teach the principles. Another one is a bank machine.

Just want to apologize to all for the latest server outage. This was purely my fault and not due to any hack\crash or anything of the sort. Apparently, when you tell the server software to create a backup of all your domains on a daily basis, it does what you tell it... until your hard drive fills up! How nice! :headbang:

QUOTE(Jim Kring @ Apr 13 2007, 11:37 AM)

the software service providers that provide the best service to their customers and treat them well will win (I hope).

None of the bugs I cared about were fixed in 8.2.1. as indicated from the NI buglist. So NI has dissapointed me with the 8.2.1 release. Am I being selfish? Of course I am... I'm a customer.

Can't you use a bundle node? You like dialogs?

BTW, you don't have to use NI's OPC server. Find one that works and use it.

[wiki]Numeric[/wiki]

This is a good point and is an issue I'm trying to resolve. Currently, every edit will generate a new revision. This is why it's important to include the revision number in the zip filename. This way we can determine if it's a real file change or just an edit to the page.

The moderators have access to delete or hide the unnecessary files. I'm not sure if you (as an owner of the file) have this permission. I don't think you do.

Looks like a LabVIEW bug to me.

Jim was sad today at work because nobody congratulated him on reaching 1000 posts. So here...

The number has been reduced to 50. Regardless of the number, there is always the chance that you will miss something. What happens if you are away from your computer for a week? Should the number be changed to 1000 to accomodate you? Thus is the nature of RSS. The higher this number, the more resources used on the server to cache these posts and generate the feed.

At least LabVIEW beat ABC, Boo, MAD and Groovy!

Countdown (game show)