How to make the LV front panel controls the current value through the program is set as the default value when the next time you open?

How to make the LV front panel controls the current value through the programis set as the default value when the next time you open?
1110340051

Try this: Re: How to make a VI remember the latest control value?
Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice

Similar Messages

How can I use multiple front panel controls to be mirrors of each other?

Hi All:
I know this is going to be a strange question, but I have multiple inputs that control one output. This in itself not necessarily difficult, but I have a strange need. If one of the control inputs change I would like this to be indicated by the other controls. For example, I have a slider, numeric and dial controls on the front panel that control RPM. If the slider changes to 1000 RPM I would like the numeric and dial controls to see that change. Is this possible. If so, can you give me advice on doing this. I am using 7.1. Thanks for the help.
John Honnold

What you want is not that hard, but asked for a rather limited times.
Here's a how to:
Drop a slider
Right click Visible items-> Digital display
Right click on the slider Advanced-> Customize
Right click on the Digital display Replace select the control you want to replace it with (a gauge for instance)
Right click on the Gauge Visible items -> Digital Display
Now you have one control with three control options:
This was done in 8.2 but I think the same goes for 7.1
Ton
Message Edited by TonP on 04-06-2009 09:52 AM
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Attachments:
Example_VI.png ‏7 KB

Help! how to make transparent front panel

Hi:
I intend to show a vi when my system call it but the backgound have color and I want it to be transparent. I search inside forum and get this thread http://forums.ni.com/ni/board/message?board.id=170&message.id=178411&query.id=105714#M178411 . After that I try follow that method using "call DLL" to let my front panel become transparent but I fail.
I attach my vi and hope come one can help.
thank in advance.
Attachments:
Enter OP ID.vi ‏50 KB

TK Chang wrote:
Thank a lot tst, it work.
By the way I am try to understand how to use windows API. For example function "GetWindowLong" got 2 parameter one is "hWnd" I know is get the window name and the other "nIndex" I search in MSDN (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/wi...) but I can't figure out why the input value is "-20".
Same as function "SetWindowlong" and "SetLayeredWindowAttributes". All these APi i can find the explaination in MSDN but I don't know what value I should put for those parameters. Is there anyway to find out what vaule I should give for those parameter?
yes, if you can get that example for change bmp shape then pass to me.
Thank very much
Message Edited by TK Chang on 01-11-2007 09:44 PM
That is because Micrososft defined for readibility constants and usually only documents them in MSDN. If you want to know the numeric value (which you need when trying to call such a function from non-C environments) you basically have to install the plattform SDK from Microsoft and search in the headers for the constant name and see what value it has assigned too.
A search of the constant name as documented in the SDK on the web might sometimes also give results such as an include form for Visual Basic, and interface description for Delphi or simply C header files from some Wine patch, but there is no quarantee and you might have to look through many hits before finding something useful.
All these options do however require you to understand a bit about the syntax of the programming environment you got the solution from such as C syntax (the plattform SDK is completely for C(++) too), Delphi, or Visual Basic.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

How can i use the same front panel graph in more than one events in an event structure?

i want to display the signals from my sensorDAQ in a graph.but i have more than one event in the event structure to acquire the signal and display it in the graph.the first event is to acquire the threshold signals and its displayed in the graph as a feedback.after the first event is executed, i will call the second event,where the further signals are acuired and compared with the threshold signals from the event 1.my question is how can i use the same front panel control in more than two events in the event structure?please answer me i'm stuck.
Solved!
Go to Solution.

Hi,
I have attached here an example of doing the same using shift registers and local variables. Take a look. Shift register is always a better option than local variables.
Regards,
Nitzz
(Give kudos to good answers, Mark it as a solution if your problem is Solved)
Attachments:
Graph and shift registers.vi ‏12 KB
graph and local variables.vi ‏12 KB

How do I get the Label for a Front Panel Control to appear in the Block Diagram but not on the Front Panel?

How do I get the Label for a Front Panel Control to appear in the Block Diagram but not on the Front Panel? On the Front Panel I am making a complex control that consists of a Slider and a Numerical Input box. Both Controls display the same information and either can be used for Input. When one changs, the other is made to display the same value.
But I only want the Slider to display the Label on the Front Panel, to avoid confusion. On the Block Diagram however, I want both controls to display their Labels so that I know what they are. How do I display the Label for a Control on the Block diagram, but not display its Label on the Front Panel?

No. The Label Visible property is separate for the front panel control label and the block diagram terminal label.
How did you start out with the block diagram's label not being visible? Whenever I drop a control or indicator, the label is always visible on both the FP and BD by default. Maybe there is a LabVIEW option that causes new controls/indicators not to have their labels visible by default, but I have yet to find it. I don't think an item should ever be dropped without the label visible, good LabVIEW coding practice demands that the labels for control terminals on the block diagram be visible so that you know what control or indicator a wire is going to.
That being said, I have seen a lot of VI's posted where the label for the terminal on the BD is not shown (against good programming practice.) I've gone to the BD and right clicked to show the label. Sometimes, the people have an empty label (which will turn off the visibility for both the FP and BD) and I'm forced to add some text of my own into the label so I can figure out what their code is doing. When I add some text to the label, at that time, I find both the BD and FP labels become visible.
Are you dealing with controls that have empty labels to start?
Good programming practices:
1. Always have a name for all of your controls, never use and empty label by deleting the text in the label.
2. Make the labels unique. For example, don't have two controls both called Stop. How do you know quickly know which terminal relates to which control?
3. Always show the labels on the block diagram, so you know the function of a control's terminal. If you want to hide the label on the FP, that's okay.
4. If you want a different label to appear on the FP than whatever you actually called the control, then use the caption. You can hide the label and show the caption. This is useful if you need to programmatically change what the "label" is on the front panel such if you are making an application that needs to change its user interface such as for a foreign language.

How to run my vi from a front panel control without using even structure in the vi

Hello, I would like to run my vi from a front pannel control instead of the tool bar RUN botton. I am using LV6.1 without the even structure feature, so I can't do as proposed by a previous posting by setting the vi to run at open in a "do nothing state" then taking the front panel control event and switching the vi into another ("running") state. I wonder is there some other type of solutions to this problem. Your help is greatly appreciated.
Bryan

Hi Dennis, thank you for the reply. I tried with the attached vi. It can only run once (also not in the correct state I want), as the control i placed on the front pannel will stop the VI. I want to have the vi do nothing when it is opened and start counting when the start botton is pressed. Then i want it stop counting when the botton is pressed again...and so on... I must need a different structure to get it work, or did I miss something simple? Thanks again.
Attachments:
StartVI.vi ‏16 KB

How to place event callback components and "main-VI" components in the same Front Panel?

What I'm trying to accomplish:
Place a .NET component, which generates events, and other standard LabVIEW components in the same Front Panel. The standard LabVIEW components should be updated when events are being generated in the .NET component.
How I tried to solve it:
Problem:
The event callback code must reside in a separate event callback VI. In order to "pass the event up" to the main VI I tried to use a global variable. The interrupt does occur:
but I was hoping that the string indicator would be updated when the event occurred, but it wasn't.
Questions:
What's the best way to solve what I try to accomplish? If I want to solve the problem on the picture above, how would I do it (it may not be the best solution, but I'm still curious what's wrong)? Please feel free to be over-explicit when replying as I am novice LabVIEW programmer. Thanks in advance for any help.

There are two bundle functions for creating clusters. The function simply called Bundle operates almost exactly like the Build Array function I showed. The type of the output cluster depends on whatever you wire in as inputs. You don't have to supply a specific type parameter.
The function called Bundle by Name takes in a specific type of cluster in the top input and allows you to fill in the values of that specific type of cluster. To create the specific type of cluster you want, you need to create a cluster of string references. Here's how to do that:
Go to the Front panel and drop down an empty cluster shell.
Go to the Refnum palette and drop down a Generic Control Refnum. Now here's a cool trick to turn that generic refnum into a string-specific refnum (a so-called strictly-typed refnum). Grab a string from the controls palette and drag it into the Generic Control Refnum. Once you drop it, you'll see the refnum change its icon to display a string picture.
Make copies of this string refnum (as many as you need) and add it to the cluster shell.
Now, if you're making specific types of clusters to work with, now is the absolute best time to learn about typedefs if you haven't already. It will save you hours and hours (if not days) of development time in the future. Trust me!
Jarrod S.
National Instruments

How to show in the main front panel the progress of each sub Vi ?

my program has many sub VIs, i wish to show in the main front panel the progress of each sub Vi; what is the best way to do that?
atleast i need to show that each sub vi is completed, [can i add details on the main front panelsuch as: filename that is being read by a subVi, graphs plotted by a subVi, etc..]
can i display a graph from a subVi on the front panel of the main Vi?
what i hv done is attched as picture.
Solved!
Go to Solution.
Attachments:
Capture4.JPG ‏152 KB

as suggested...pass references and cntrl references
Spoiler (Highlight to read)
Attachments:
main ref cntrl.zip ‏27 KB

Make LV VI front panel appear

I am a TestStand newbie. I want to make a dialog box with LabVIEW. I am using the sequence editor. I have made a very simple VI with two controls and an OK button. There is an event structure which triggers when the OK button is pressed. The problem is that when the vi is started, it does not automatically make the front panel of the vi visible. I want to make the front panel visible and appear in front of the sequence editor.
Solved!
Go to Solution.

You need to check the box in the Module window for that step that says Show VI Front Panel When Called.
Also, if you installed TS after you installed LV then in your block diagram pallette there are some TestStand VIs which aid in writing TS subVIs. There are 2 called: Start Modal and Stop Modal. You can read about them in the help. Basically they make the VI modal to TS.
jigg
CTA, CLA
teststandhelp.com
~Will work for kudos and/or BBQ~

Front panel controls show up one at a time

When I first open my main vi the controls on the front panel appear one at a time over 20-30 seconds. The problem was compounded when a second front panel was made switching between the two the controls for the second panel pop up one at a time and after they all appear the first panels controls go away one at a time. Any ideas on why this ocurs and how do I fix it so the transition happens quickly?

BenThe code is modeled on a vi that was done under LV5 and was also ported over to new computers and LV8. We had to install the traditional drivers to get that code to run on the new systems. The original vi transitions fairly quickly. The new vi is modeled on the original code with efforts being made to strip it of the overhead bagage. ie.the sequence structures and controls no longer needed..... The new code from the begining has sequentially brought up each control with each new control being added it progressively gets worse. With the addition of the second front panel in the same vi the protracted transition of the controls became a significant issue.
Bob
Attachments:
20060817.zip ‏2692 KB

How can i access remote front panel in RT with LabVIEW run time engine in client PC

Hi to all,
I have developed the RT application with cRIO 9075 integrated chassis. And i have access its remote front panel in client PC. Now i want to access the remote panel in the client PC without having LabVIEW runtime engine. If i connect the remote panel with that client, it shows only the vi border. i doesn't downloads the front panel.
How Can i access its remote front panel without LabVIEW runtime engine in the client PC?

You cannot view a remote front panel without the LabVIEW runtime - the LabVIEW runtime is what makes the remote front panel possible. What you will want to do instead is likely create a Web Service that you can access from a remote PC without requiring the LabVIEW runtime. However, this will require you to develop a web-based HTML or similar UI to interact with the VIs running on your system - NI hasn't yet created a way to export a LabVIEW front panel as an HTML'ish page.
-Danny

Viewing the logged front panel data

I’m writing into the datalog file, I can see that the data is recording every one second, but when I retrieve the data i.e. viewing the logged front panel there is only one data since the range is from 0 to 0 ([0..0]). Does anyone know why? And how can I fix the problem?

You should Never rely on the abort button on the tool bar to stop a VI in a loop writing to a file. The abort stops everything immediately and you don't properly close the file. Instead of using a boolean contant in your loop to get you an endless loop, add a Stop button (a boolean switch) to your front panel. Wire that through an inverter to the Continue terminal of the loop, or (if you're using LabView 6.x) right-click on the Continue terminal and change to Stop if True, then wire the Stop button directly to the terminal. Then pass the file RefNum out of the loop to the Close File function.
For debugging purposes, I do use the Abort toolbar button, but I never create a VI with the Abort as the only means of stopping a VI. Anytime you want to st
op a VI in a loop, you may want to have some control over how it stops. There may be files to close, instruments to shut down, results to process, etc. Even if the VI is very basic or even temporary, just get in the habit of using a Stop button on your front panel rather than a boolean constant to get an endless loop. It's really not that much more work and it gives you control over your VI.

Bind a front panel control to an item

Hi all,
I have a problem with selecting DataSocket in "Data Binding Selection" when I want to bind a front panel control to an item in another server such as an OPC Server. I want to know whether we connect to that item via OPC Server or DataSocket Server after specifying an OPC URL. The LED_DataSocket near the front panel control planned to bind to an OPC Server's causing this doubtfulness for me.
And I want to know in a big application what the difference between these two is:
Connecting a front panel control to an OPC Item selecting:
NI_PSP\network Items\then selecting the item from an OPC client instance currently created or,
DataSocket\browse\ finding the item we want through Servers listed.
Please advice.

I'm working on a big HMI application with more than 200 I/Os. if I want to read/write these data items from an OPC server, do you mean it's better to use shared variables bound to OPC data items, then read/write directly the shared variable from a front panel object, connecting a shared variable node to it?
I want to know if I bind my all front panel objects to shared variables or OPC items via NI-PSP or Datasocket, for this number of I/Os, it works. And what are the differences between these two technologies?
I 'm for the best way of gathering data from an OPC Server.
Message Edited by Maryam on 04-20-2006 11:41 AM

How to make table that will include controls such as drop list?

How to make table that will include controls such as drop list?
I need to create table as Property Browser of ActiveX, that include rows with differnt types such as drop list, color, ...

Hi Nadav,
I figured out where I missed your point. When you wrote
table as Property Browser of ActiveX, that include rows with differnt types such as drop list, color, ...
I was thinking mixed data-types in a [2d] table!
Looking at the property browser again it looks like no single LV function can do all of that. It can be developed as a pop-up (like the browser is set-up) and then code all of the elegance using an event structure to control the background color of a string indicator while controling the visability of rings that are only made visable when a mouse down is detected. That will get you pretty close.
So no, my previous response ws not correct for what you are trying to do if you want to duplicate all of the wistles and bells of the property browser pop-up window.
Please forgive my distraction.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

In JSF, how to make a menu with access control?

In JSF, how to make a menu with access control?
The access control can be guided by programming, database or other means if possible?
Thanks

I want to make a dvd menu in iMovie because i don't have IDVD and can't find anywhere to download it?
For making DVDs I would recommend iMovie 06 and iDVD 09 both readily available on Amazon or eBay. Shop for iLife 06 and iLife 09.
You can make menus and chapters with any version of iMovie except the latest one. There's nothing wrong with iMovie 11 either but I prefer iMovie 06.
By using iMovie 06 and iDVD 09 I make DVDs with professional moving menus with very little effort. They look almost as good as Hollywood.

How to make the LV front panel controls the current value through the program is set as the default value when the next time you open?

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