Is there a trick get around physical bundling of items on the front panel?
Ok - so I appreciate how bundling items on the front panel into a cluster can make the programmatic code very slick and easy to access.
I know this is completely obvious - but it forces me to arrange my front panel objects I would prefer not to arrange them. Here's why: I have my objects grouped together in a manner that reduces the number of datasocket read/write necessary for VIs to intercommunicate - they are grouped based on how they should be communicated to other VIs - not based on their physical arrangement on the front panel.
It seems the only way I can organize my objects into a cluster that appears as a pink control/indicator block in my diagram is by assembling
the objects into a cluster on the front panel... and this pink block is very useful as I can make local variables for it. This is much simpler than having all the controls and indicators bundled into a cluster for network transfer... but still having to use local variables for each control/indicator in order to use it elsewhere in the diagram.
Ugh. I fear this message is too much rambling and not enough information for anyone to help me... I'm going to post it in the hopes that someone can follow me.
I guess before I submit this I should remind you of what I was hoping to accomplish - to use the front panel to group objects but then skirt the requirement of keeping this objects in the same physical cluster box on the front panel.
again, ugh,
Jim
Place all your front panel objects the way you want them then in the block
diagram use the Bundle by Name vi to create a cluster.
Kelly
"dingler44" wrote in message
news:[email protected]..
> Ok - so I appreciate how bundling items on the front panel into a
> cluster can make the programmatic code very slick and easy to access.
> I know this is completely obvious - but it forces me to arrange my
> front panel objects I would prefer not to arrange them. Here's why: I
> have my objects grouped together in a manner that reduces the number
> of datasocket read/write necessary for VIs to intercommunicate - they
> are grouped based on how they should be communicated to other VIs -
> not based on their physical arrangemen
t on the front panel.
> It seems the only way I can organize my objects into a cluster that
> appears as a pink control/indicator block in my diagram is by
> assembling the objects into a cluster on the front panel... and this
> pink block is very useful as I can make local variables for it. This
> is much simpler than having all the controls and indicators bundled
> into a cluster for network transfer... but still having to use local
> variables for each control/indicator in order to use it elsewhere in
> the diagram.
> Ugh. I fear this message is too much rambling and not enough
> information for anyone to help me... I'm going to post it in the hopes
> that someone can follow me.
> I guess before I submit this I should remind you of what I was
> hoping to accomplish - to use the front panel to group objects but
> then skirt the requirement of keeping this objects in the same
> physical cluster box on the front panel.
>
> again, ugh,
> Jim
>
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I have a program that is reading in some network files. When a certain part of the file has been changed I want to pop up the front panel and blink the changed area. The blinking is easy and I can get the VI to pop to the front of any other running LV stuff (using the IsFrontmost vi property) but I need the vi to pop to the front of the entire screen and whatever else is running (Excel or the such). Any ideas on this? I'm doing the development on LV 6.1 on Win2k.
Thanks,
GaryMache wrote:
Hi Gary,
There is one thing I think you may have to do. If the window is minimized than it will try to make it topmost but the minimize will take precedence, so you will see the task bar blink and the OS stays in the active/current window. Try to use the "restore window" vi before trying to make it topmost. That should work.
Also make sure that, the LV window you are trying to restore and make topmost is not superceded by another LV modal window.
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Mache
I've tried putting in the Restore Windoe vi and the results are the same. Both of those functions (seperate or together) result in the window moving to the top of the other LV screens only. If I have Word or explorer or anything else open, that window will stay on top and the task bar flashes. Can I use the "move window to front" vi in my main vi to move my main vi's front panel to the front? If not are there any ways to get around this? My program is mostly running in the background but when there's an important change I need it to move to the front and take precedence for a few seconds. -
I would like to use the built-in Data Logging feature. There is the "Log at Completion" option, but is there a way to programmatically make a new log record while running? I looked around in VI server and couldn't find any methods that would do that. Currently, I am grabbing all of the front panel control references using VI Server and if there are any changes, the changed values are written to a log file along with a date/time stamp. I'm mostly dealing with buttons, which simply change from 0 to 1 or 1 to 0, so it's not too hard to visualize what was pressed. It works okay for reconstructing what happened, but it would be much nicer to use the built-in fe
ature because you can "replay" directly onto the front panel and actually see what the changes were. However, without being able to programmatically make a new log, it won't work for me.Jake,
There are several options here.
I would suggest using your own code for datalogging. The datalogging you are referring to is primarily for debug, and one shot datalogs of front panel indicators (and controls?), not including graphs, etc.
If you go to the file functions, you will see a menu for datalogging. These functions will allow you to save your data, as you need it, simply, and in a compact format.
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Good luck -
I am saving data read from FieldPoint to a .txt file. Is there a way to create a button on the front panel so that when the user pushes this button it automatically opens the .txt folder in notepad? I want to bypass the user having to find the file in the computer in order to open it.
Hi jem,
I suggest that you break this up into three seperate questions and re-post to this list. That way you get more ideas from others that may have better insites than myself.
Re:the sysexec
The Sysexec will allow you to execute a dos command. This is the equivalent of going to
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What you should do is find the proper DOS command sysntax that is required to open a text file in notepad or your favorite editor. Once you know what a good DOS command is, you should pass that string to the Sysexec.VI. The Sysexec has an input that allows you to choose if the code waits for the command to complete or if it should just start the program and let it run in the background. Sysexec will open its own window to run the command you speci
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Ben
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I am currently active on.. MainStream Preppers
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Is there a way to rotate an array on the front panel?
Is there a way to rotate an array on the front panel? For example, I want element [0] to be at the bottom of an array that's expanded to show the elements vertically.
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You might be able to reverse the array, creating an upside down display. If you also need the user to index it, then it gets trickier. Hide the array index display. Create another numeric control to look like the index control. When the value of the new control is changed, subtract the value from the last index of the array and use the difference to index the array. You may need to adjust by +/-1, so try it to be sure.
Lynn -
How to get the position of the stem in control valve using slider control in the front panel
I have created a calibration program for a control valve. Signal (4-20mA) is generated from labview using slider contorl which is given to the valve via DAQ(module 9265) and again the feedback signal from the valve is acquired using DAQ(module 9203).. . There is an input ISO/ISC(Increasing signal to open/ Increasing signal to close) in the front panel.
ISO would set the output to increase from (4-20)mA further opening the valve
ISC would set the output to increase from (4-20)mA further closing the valve
I have doubt, how can i get the position of a stemRavens Fan wrote:
If the position of the stem is being sent to the PC through a 4-20 mA signal into your DAQ 9203 module, then you just need to do an analog input read in order to get the signal.
When reading this post, that is what came to mind... So let's see if both RavensFan & I are trying to understand the same thing... Are you saying that the position of the stem is linear (or scaled) to the amount of current sent to it? Meaning a 4mA signal would move it a certain distance, and 10mA would move another given / known distance? Or are you saying that it is calibrated so that a 20mA signal for a certain duration (ms) would move it a given distance? So the scale would be time and not current unless a lookup table is used to adjust the time duration based on the current being drawn...
It's just that I am not familiar with solenoid / drive devices that related to current.. To voltage, yes. To time, yes.. To current, I'm simply saying that I am not familiar with that. Can you tell us more about this stem (mfg / model designation)? -
I'd like to set the strings[] property of all the Text Ring controls on a front panel at once without creating a property node for every text ring. How can i do that?
> How can I get a reference to all controls on a front panel of one type
> )for example of the type Text Ring?
>
> I'd like to set the strings[] property of all the Text Ring controls
> on a front panel at once without creating a property node for every
> text ring. How can i do that?
This is likely more complicated than making property nodes for each
ring, but you can do it. Make a subVI that takes in a panel reference,
reads the array of control references, loops through them looking for
rings, and modifying the Strings[] property on each ring.
The part of this that will probably be the least obvious, when you
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if an element is a ring. You can read the classID and compare it
to the cla
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node and wire the error out to a case structure. The error case is
where the objects that aren't rings will go. The success case case
where you will have a valid ring refnum that you can use to modify
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Greg McKaskle -
How to/Is it possible to get the front panel's VI icon?
Hi
I want a sub-vi to get the front panel's VI icon image of other VI,
example, the subVI can have the image return based on VI refnum, is
there any function to do this? I try to search the "Application
Control -> Property Node" and could not find any of it.
Thank for any suggestion.This method also exists in 7.0
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA -
Is there a way the user can change the equation in the formular node from the front panel on the fly, dynamically?
Sorry, I don't think so. That would be pretty cool if you could create a property node for a formula node and then enter a formula on the front panel and use it to update the formula. But you can't create a property node for a formula node and the only way of modifying the formula is by typing it into the formula node on the diagram. And you can't modify a diagram of a running VI.
You could create a VI which is only a formula node with the maximum number of inputs and outputs you expect. Have a button on the calling VI to Edit Formula. When the button is pressed, use a VI server to display the front panel on the formula VI, display a dialog box telling the user how to display the diagram of the formula VI, then stop the calling VI. (You can't edit a sub-VI while t
he calling VI is running). The user will then need to rerun the calling VI to use the new formula.
You might be able to do something by calling MatLab or something like that to get an interactive formula window. -
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 get rid of the reference lines on the front panel
I forgot how I created a couple of horizontal and vertical reference lines on the front panel. It looks like the origin lines on the front panel. When I move my program to another monitor with different resolution, all the layout is messed up because of the reference lines can not change with the resolution. Did anybody meet this before? How to get rid of them?
Attached are the 2 creen shot of front panels.
Thanks in advanced.
Solved!
Go to Solution.
Attachments:
front panel.png 63 KB
front panel2.png 42 KBYou will have to click on the top menu and choose options see below
when you do this window will pop up and you scroll down until you get to the front panel options. See below
Tim
Johnson Controls
Holland Michigan
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