Local property node on the VI Analyzer VS variable

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• Power hexadecimal value for a color property node throws the error message

  Hi all

  First of all, thank you very much for all the help with a complete noob here.

  I'm just trying to figure out how to launch a hexadecimal value to a knot of material color to change the background color of a digital indicator. I think I have the right property, the numtext.bgcolor.

  I'm putting in a case structure in a simple example, to use a digital constant I put hex color code, I want... and it throws an error 1077.

  Here is a picture of what I'm trying to do and the error... any suggestions where I'm wrong?

  

  And the error:

  

  Thank you in advance,

  Cayenne

  The value that you entered is not valid, because it is too big. LabVIEW expects the RGB colors in the range: 000000 (black) FFFFFFh (white) and all combinations between the two. The number you see in the screen shot is greater, where the error.

  If you wan, as experience is gained, a color in a digital indicator (U32) box control and set the display for Hex format.

• position in the property node is not updated in another while loop

  Hello

  I have a structure of the event in a while loop and I have a chart with 2 sliders on it. the chart is in the loop outside the structure of the event and it becomes a wave form when an event occurs.

  in a separate loop, I have 2 cursors cursor position property. I subtracted to get their distance. but when I move the sliders on the chart which is in the first, while the loop doesnot change the values given by the property nodes in the second loop

  is this something related to the structure of the event? don't needs real graphic to be updated all the time or is it ok if she becomes a waveform only on an event

  can someone please help

  Thanks in advance...

  The value of the variable "Stop 2"is in memory still "True" so on that a second (and resulting) running that your upper loop always ends after the first run.

  The display of "stop 2' LED is to be reset when you press the button"Get the waveform". making the False value.

  So reset the variable button after finishing two loops or before starting the two while loops.

  Tone

• Sample quantity sample DAQmx channel property Node substitute in LabVIEW when = 1

  [cross posted from LAVA] 

  Problem:
  LabVIEW seems to be the substitution of a value of 1 to a value of 2 for the node property DAQmx Sample Quantity.Sample per channel for a continuous acquisition mode.

  Information:
  I have a task created in MAX (version 4.4.0f1).
  When I updated To Read samples 1 the task runs successfully in MAX.
  When I read the task in LabVIEW (8.5), the property node Sample Quantity.Sample per channel (i.e. the samples to read) is converted to a value of 2.
  If the value is greater or equal to 2 to the MAX, then the Sample Quantity.Sample by channel in LabVIEW property node returns the correct value.

  I get the same problem with a real or simulated device.

  Question:
  Is this desired behavior?

  Side note:
  If N samples (acquisition of buffer finish) is selected samples To Read cannot be 1 because it causes an error 200077 - must greater than or equal to 2.
  But no error will occur when the task is saved as a continuous (continuous buffer acquisition). I don't know if this is related. The error generated is:
  Error-200077 occurred to the DAQ Assistant
  Possible reasons:
  Measurements: Requested value is not supported for this property value.
  Property: SampQuant.SampPerChan
  You asked: 1
  Valid values begin with: 2
  Valid values ending with: 8589934590

  Shouldn't
  

  Hi JG,. Remember that the number of samples (one associated with DAQmx sync settings) is not relevant for continuous acquisition.  To read a sample at the same time, you simply specify this in your DAQmx playback function.  When you configure MAX to read an excerpt, it makes this same functionality automatically. You will not be able to get the value of another property node as the value is converted as soon as the channel is created (the value non-sous the constraint is not stored anywhere by the driver).  It should not be a need to this value in your code, if you want to read a sample to a schedule the DAQmx read simple example of function.  The amount of samples by reading is not part of the task itself, but is defined when running as an input to the function read DAQmx. You get the error message indicates that your device supports should not single-point HW timed - I would have probably asking which device you were using.

• used in a Subvi LabVIEW property node

  I have a group of Boolean control front, I want to minipulate the visibility and color (4) in a Subvi.  I created a Boolean refnum cluster and spent by them in VI.  In VI, I created a group of CTLRefnum that I used as entrance pole.  In the Subvi, I am able to control the visibility through the time property node, but the Color property node (4) does not appear as a selection in the Sub - VI.  Any ideas on how I could control the colors in a Subvi.

  Hello HEJ@WR,

  Looks like you may have thrown your refnums Boolean to more generic control refnums - as the Color property is specific to Boolean values, you will need to ensure that you are now the reference type.  Visibility is a property more generic that applies to all types of controls. Refer to this article for more information on casting refnums:

  LabVIEW Help: For more specific class function

  http://zone.NI.com/reference/en-XX/help/371361H-01/Glang/to_more_specific_class/

  LabVIEWWiki also has a very good discussion of types refnum and properties specific to the class here:

  LabVIEWWiki: Control references

  http://labviewwiki.org/Control_References

  Also - if you set the example code showing what you're trying to do is much easier for other users of the forum help!

  Kind regards

• Graphic property node indicator position

  Hello! I have several graphic indicators and I want them to appear on certain positions, so I created property nodes where I define their exact position. I have a tab control in my design to separate the 2 pages front and the problem is that indicators are displayed on both pages. I want them to appear only on one page, how do I solve this problem?

  Thank you for your time.

  Hi cocopa.

  On the front panel, if you drag the graphical indicator in the appropriate page then it should stay there. If the graphical indicator has a shadow, it is on the top of the tab rather than inside a page control. In the block diagram, you must have a business controlled by the tab control structure. When you want to adjust the graphic position, have the indicator and the property node in the box to the right page. That should allow you to move the chart inside your tab control page.

  Kind regards

  Daniel H.

• Label error after adding/removing items to a property node

  It's my third topic of bewilderment to label in Labview (precedents are: here and here).

  When you place the label of a property node on the right of the node property, centered vertically, the labels are placed incorrectly after the property node elements are added or removed.

  Two things happen:

  1. vertically, the position of the label is not stay centered and can even move away from the property node (if enough material is removed).  This phenomenon also occurs with the label on the left side, centered vertically.

  2. to add or remove larger items (which causes the property node resize horizontally as well) the position of the label is misplaced horizontally, often dramatically so.  This also happens with the label anywhere elsewhere on the same or right side centered horizontally.

  Hello Ettepet,

  I was able to reproduce and entry CAR #414275.

  I think that occurance 1 and 2 are related to eachother, so I returned them like a CAR.

• RT - property node error 1055

  Hi all

  Currently I develop an app RT on LabView 2014 SP1 which consists of three parts:

  • A PC vi that read the data and sends it to the target of RT;
  • A RT vi running on the CRio-9074 which receives data, convert it to current values and send it to current output modules. It also sends PFGA a number of pulses must be generated.
  • A FPGA target that receives a number of pulses to be generated and then do the work by a module ttl

  Things will work perfectly when the RT vi cover is open on the PC. This happens when I enter debug mode simply run the vi RT of the Project Explorer.  The problem started to happen when I tried to run the program without the RT vi front open. After some research, I discovered that the application of the RT was generating an error 1055 in a stream property node. The strange thing is that this does not happen while the RT vi façade is displayed on the PC!

  Althouth it seems to be a problem known as I found on the Web site of NOR, it is not clear for me, how do I solve the problem. Should I just close the RT VI, open it, close the vial, compile and deploy it finally? Well, if it is that means that workaround, it did not...

  537230 Return

  Changes to the VI with dynamic references breaks VI with the error-1055 the Node property When a VI deployment that allows to get a dynamic to refer to a control on a x 64 Linux target in real time, the VI deploys successfully. After you make a change to the VI, error-1055 is thrown from any node property is trying to access the dynamic refnum. The error says "error-1055 has occurred to the property node...". » Workaround: Close, and then reopen VI. Report version: 2014 SP1    Solved Version: N/A    Added the: 23/07/2015

  Thank you all for the help. I use a few cards in the RT vi and was the use of the nodes properties to clear the history. These cards are only for the control of the application while it is still in development, and it worked fine while I ran the RT application with its façade exposed on the PC screen. At the moment I leave be executed only in the CRio, he started planting and throwing the error 1055. I removed the nodes properties because they are not indispensable and everything works fine.

• property node image

  Hola!

  MI problema are el siguiente--> Tengo varios display of imagen y quiero that segun the seleccion me in pantalla muestre solo el display correpondiente an esa Selección.

  Creo that hace mediante a property node, pero the truth that no me entero como esto works good.

  Hola,

  El property node used are "visible". Te editor an example muy sencillo en LabView 8.6. If lo need salvado para otra version hazmelo saber.

  A greeting.

• How to use property nodes?

  Hello world

  I am a beginner of LabVIEW. So I want to know about the property in detail node. Please please someone help me to know the function of each property node...

  Thank you in advance,

  Hi Achuthaperumal

  I understand that you are a beginner of the LabVIEW. But I think it's too difficult to explain the function of each property node.
  Because there are a lot of property node in the LabVIEW.

  The main reason we use a property node is we want to change a LabVIEW action programmatically.

  When you create a LabVIEW program, you can change the behavior of "every indicator/controller etc." by changing the property.

  But in this method, you cannot change during the execution of the program.
  For example, if you want to control "the color of the Boolean indicator."

  You can use this property of node

  => Can I programmatically change the colour of the façade? http://digital.ni.com/public.nsf/allkb/0DDBDB2FE2F54A5286256918006D7BB9.

  If you want to know the function of each property node, I will recommend you to use LabVIEW HELP.

  Tepig

• Pass property nodes / / Activation/deactivation to the off position

  Is there a property switch node that will transform by program a toggle switch on the position at the exit of a while loop?  I can put the value property (signal) false node but the switch is always displayed as being on the front panel when the program terminates.  I want to physically show as being in the off position.  Thanks in advance.

  I assume you mean the switching of data.  Create a local variable of the switching of data by right-clicking and selecting create - local Variable.  Put the premises outside the loop on the right side.  Put a false constant inside the loop near the right border.  The constant in the loop of wire at the local level.  That't he.

  Comments about your VI.  You have a constant false cable to the control panel to stop the loop.  The VI will work forever unless you press the button abandon.  This is not the way to stop a vi.  If you stop in this way, the switch of data never get set return false because you abandoned the vi before they have a chance to write the value false to the local variable.  You must instead use a stop button.  Thread the stop button to the stop sign.  Use the button stop in the Boolean palette because it has mechanical action on the latch releasing.  The Boolean value restarts false once you press it and reads the code.

  Another comment.  Why is there so much space between your code.  You need to scroll around to see all the code.  Get on a single screen.

• Use the node property to get the value of control

  Hi all

  I know that you should keep the use of local variables to a minimum in order to avoid race conditions. Is this the same problem if you using the eg property node. a digital control?

  The reason why I want to do is to keep the son of the intersection when I need to use a control on one side of the diagram across the diagram...

  Basically to make the scheme simple and enjoyable to watch.

  I hope that makes sense!

  Good day!

  Kind regards

  Tommy

  Tombech84 wrote:

  [...] Is this the same problem if you using the eg property node. a digital control? [...]

  Exactly. Perhaps, he creates the race conditions and should not be used. Using wires to connect the terminals is the approach only "Save".

  In addition, performance decreases in the following order:

  -Terminal (+)

  -variable (0)

  -property to value node set (-)

  Norbert

• Graph plot legend colors Signal not updated when mixed with the property node

  Hello

  We try to put the colors of the trace of a graph of Mixed Signal using a property node. Although we can change the color of the data in the field correctly, the colours of the plot in the legend do not change until some apparently unrelated operator action is performed (for example, to resize the window or by double-clicking a field name).  Waveform to XY charts don't seem to have this problem.

  Anyone know a work around?  I think I saw a similar topic on the forums earlier, but I'm sorry that I am unable to find it now

  See attached vi.

  Thank you

  -john

  I should probably have joined the last post of VI, but I have has been a thread of error between the two loops.  I also deleted the text you had so I could see the I need to press the button.

• Node property/reference for the image and 'Create VI' inconsistent control?

  Hello

  I encountered this problem several times already and although I have worked around him, so far, I would really like to understand what is it:

  If I have an image display control on the Panel before (IMAQ Vision, not the image control type) and drag a property node or a reference to it on the block diagram, it seems impossible to create a Subvi diagram if the selected objects are equipped with a knot of property image or an image reference. Select 'Create Subvi' won't do anything, don period. No warning, no beep system, no nothing.

  A related issue is that if I have a view control reference on the diagram and try to create a control from it (for example to use as a control on one dimension of connector VI entry), same thing, "Create control" will not do anything.

  Why is this?

  Thanks for your comments.

  X.

  Xavier,

  This was reported to R & D (35835) for further investigations. A possible workaround is to make the Subvi LabVIEW 7.1 and open it in the new version of LabVIEW.

• Element of cluster R/W by the property node

  I have a table via nodes of property by using the value property, but have not found a way to do the same thing with a cluster. Am I missing something?

  Thank you

  Glauber

  Ah yes. If you want to get an individual item then read the linked document Adnan Z. According to the title, this seems to be what you want to do, but body, it seemed that you wanted the entire cluster.