Read the value of the variant of cluster

Similar Questions

• Dynamic read the global variable (cluster)

  Hello!

  I would like to lika to read each control (label and value) in my global variable that contains a cluster. The problem is that I am doing it on a cDAQ and insofar as I undestand and has seen property th node do not have good worl on a real-time target. The code that I've tested so far is as follows:

  

  It's the main/fornpanel on my cDAQ. The Subvi in the main code contains the following:

  

  The phenonomen I've seen against hepatitis a is that it works very well maybe the first and second time when I run cod drank for the third time that the labels are empty. I read something that the dose of propertynode does not correctly for real-time target, but it is a way to come to the same solution using only not not the propertynode or you could use the different propertynode?

  Best regards

  Anton

  I solved it by using a library (Cluster Toolkit of Autotestware) to the GE in variant tables and depending on the type, I converted the variant accordingly and saved.  I guess that CVT would be able to do, but since I already use the cluster and they are "already here" it was more convinient for me to use this solution.

• Error 91 - try to use the variant of the function of data

  I'm running a problem when you try to use variations in my application. I have a setup of State machine that a State creates a list of tasks (cluster of tables), and then converts it to the Variant. The variant is fed into a shift register that allows me to access the list of tasks of a different State.

  The problem comes when I try to use the variant of the function Data. I right click on the task cluster to create a constant and then wire to the TYPE of the variant of the function Data. I wire the variant of cluster of task to the terminal of the VARIANT. When I run the VI, I get error 91: or the possible reasons: LabVIEW: the variant data type is not compatible with the data type of wired for the input type. ».

  How can I get this error if the type that I have connected to a Terminal TYPE of the Variant Data terminal is a constant created from the exact type created a variant of?

  Section of the machine of the State where I wire the cluster variant:

  

  Section of the machine of the State where I use the data out of the cluster variant:

  

  The constant wire to the terminal of data TYPE variant was created from the cluster that is connected to the Variant type data. I don't understand how there is a type mismatch?

  Is there another State between these two?  I notice you have some tunnels 'Use default if unwired' coming out of the structure of your business.  First of all, clear on the tunnels.  Second, in cases where you do not only affect the data, the data directly from the tunnel entrance in the tunnel exit of the wire.  I recommend using the tunnels linked to make it even easier on yourself.

  With the default tunnels being output, your variant coming could really be empty, so the conversion fails.

• How to read the value of request Http of the filter of the UCM?

  We have an application web connect to the Complutense University of MADRID. I would add some values to the request sent to the Complutense University of MADRID by this application. This value will be read by a filter of the Complutense University of MADRID, I created.
  
  What is the value of HTTP servlet can be read the filter of the UCM? is it possible to do something like:
  request.setAttribute ("myAttribute", "theValue")
  
  and retrieve myAttribute UCM filter value?
  
  Thank you

  AACC,

  When you rexternal application makes the call to the Complutense University of MADRID, all URL parameters or attributes of the request transformed into data variables Local to the Complutense University of MADRID.

  When you create your filter (if all goes well we are talking about the same thing here that filters means something special to the University Complutense of MADRID) you write Java Code. In this Java Code, you can access 'the query' attributes/values with code like this:

  String myval = m_binder.getLocal ("MyKey");

  Your mileage may vary, but this is the Basic code for out, review and/or use the query parameters.

  -Jason
  http://www.corecontentonly.com
  http://www.redstonecontentsolutions.com

• read the independent values in a channel

  Hello

  I want to read the value of a chanel.

  I guess that every chanel's store as an array with an index and a value.

  I would like to read a value of a chanel with its index number, then do some calculations, and then write to it.

  For example:

  Chanel 1:
  index value
  1           1
  2           1
  3           1
  4           2
  5           1
  6           1

  start index = 0
  value > 1?
  If no control of the following
  If so do something

  Do you have a sample script to read a unique value in a chanel?

  Kind regards

  Frédéric MANUAL

  OK, so it should work

  Dim oChn, K, value
  "Go to the channel you are interested in.
  Set oChn = data. GetChannel ("Time")

  ' loop through all the values
  For K = 1 To oChn.Size
  Value = oChn (K)
  If (value > 1) then
  "do something
  MsgBox ("value WG 1")
  End If
  Next

• How to read the value of list boxes by iteration in a loop For?

  I have a lot of list boxes on the front of my VI. I want to know how to read the value of this combo with a loop boxes For. The point is that I don't know how to get the reference of each combo box in a loop.

  Any information would be welcome. Thank you!

  su27 wrote:

  I have a lot of combo boxes on the front of my VI [...]

  

  Be sure to close the references that you have finished with them.

• Cannot read every value of the loop iteration for

  Hiiii...

  I developed a front-end which reads the values of serial port and display on the front panel.

  16 channels, which is a string data value. I've separated this string to read the data of each channel, but at the end of the loop for, I can read data only one channel for an iteration, and also I have to store each value iteration in a text file.

  I'm new to labview. Help, please. I have LabVIEW 8.0.

  Attached is my application code.

  This seems quite inefficient. Why don't you use a business structure? Why don't post it your code.

  In regards to the original code, you try to run by using the run continuously? I ask because I do not see a global loop, so it was not clear whether this was intended to present itself as a simple Subvi or "on-demand". If it's supposed to run continuously until you stop, DO NOT USE CONTINUOUSLY RUN it BUTTON. Use a while loop in your VI. Do not forget to place the initialization and close outside of the loop - you don't need to initialize and close the serial port whenever you loop around.

• Get the current value of the menu a cluster ring

  Hello

  I am trying to program a bunch of rings of menu to use the same options and disable the option even in the other rings of menu if it has already been chosen. It works essentially as is at the moment, but it shows each button by using a 'deactivated' option because I'm turning off the option even in the buttons that have this value. I did it using a loop knot and property and [] DisabledItems en mass. Now, I want to go to the iteration of the loop for the menu ring which already has this value.

  To do this however, I want to get the current numeric value of the ring of menu and an array of search values. If the value of menu rings appear in this table, then I want to move to the current iteration of the loop. The problem I have is that when I try to use a property node and type the property value, instead of giving me a long 32 output, it gives me the so-called 'Variant', which I have not seen before. I'm not sure how to find a table and see if the value I have is in this table. "Search table" seems just an index to be returned, I think that I want a Boolean or something. I'm also not sure how to skip an iteration of the loop (although I imagine it won't be too difficult to understand mine, I hope).

  I apologize if this is very obvious, or if my message is not clear. I started using LabVIEW, a few weeks ago and I'm still learning. I have included a picture of my Subvi downstairs.

  Thank you
  Nathan

  Variant of data allows to convert the variant to a numeric type (whatever representation you need).

  Search D 1 table returns-1 if the element was not found.  If you just compare the index with a greater or equal to zero and the result will be if the element was found in the table.

• DAQmx read - the values on the scale or not? Binary conversion.

  Hey everybody,

  I had a question regarding making the scale and the release of Renault. I use LabVIEW 2009 SP1, with a pilot DAQmx 9.0.2 and a X-Series card. I'm reading the data my DAQ and store it in a binary file.

  How is the acquisition of data read samples, in General? that is if I select NSamp NChan I16 2D Analog on my DAQmx Read, what kind of values can I expect if I was at the exit of the probe data? (Suppose I have readings in mV values and my overall fork's 04:55 V.) When he wrote in the binary file, what happens, what can I expect to see in terms of values - or maybe just descriptively?

  Overall, a little insight would be very helpful. I tried to troubleshoot asymmetric readings I received, so this will help me immensely.

  Thank you.

  Hi Matt87,

  Reading data as I16 will return the result adjusted, not calibrated for 16-bit ADC.

  If you want to write your own binaries, you'll want to include scaling of device - for series X, coefficients a 3rd order polynomial.

  Here are two examples that show how write to a binary file and read the data back.  In this example, scaling coefficients are stored in the file header:

  Continuous gain and voltage drop (binary) chart

  Graph of the acquired binary data

  That said, I would recommend that you look in the record feature integrated TDMS introduced in DAQmx 9.0.  The result is a file appropriate binary .tdms which is a standard format that can be opened in LabVIEW or in several other programs with the plugin.  See the following examples for how to use the function:

  Streaming data and log to the PDM file

  Continuously to log in a PDM file data

  The second example does not force you to read the data in the memory of LabVIEW and use the minimum CPU.  The first example allows you to see the data that is acquired.

  Best regards

• read the value of the variable knowing only one name

  Is there a way to read a variable value of knowing only the label name? I have 11 Labview and am to read a text file with a list of variable labels and try to read the value without having to create a structure of matter of hundreds of variables.

  Are we willing?

  

• Read the output values after each step runs in the User Interface of LabVIEW

  Hi all

  Development environment: TestStand 2010 SP1 and LabVIEW 2010 SP1

  Problem: is there a way to run the following steps programmatically and get values out of each of them?

  I have already extended a bit a complete interface IO for TestStand load any sequence, choose among the measures and execute step by step (something as an alternative to the steps run selected). What I'm trying to do is to add some actions between each step and do in the UI (I can't change the sequence!), so I start the NewExecution with some previously configured InteractiveArgsParam and option breakAtFirstStep set to true. Eventually I do just something like step over when debugging the sequence and it works well, but I didn't do well a way yet to read the output values of the place...

  So, if I wait before the end of the run I can read my results by treating the ResultObject, but it works only after the completion of the test sequence. Because I wanted to stop after each step, read the values, do some actions and continue to the next step, I've tried to register a running Trace event reminder View Manager. I see that after each step is executed, this event is fired, but when I try to read that a ResultObject returned in the event data it is not filled with values (ResultList seems to be empty?). Is this a correct behavior or maybe I'm reading the wrong way? (It's the same VI regarding the reading of the ResultObjects after the sequence ends and there it works very well for tables, containers and other types of data).

  As I mentioned I can't change Test sequences, I can not add a UImessages.

  What are my options? If the trace event returns output all the values from each steps or is it just used to check the status? Or maybe there's a completely different approach to this issue?

  Thanks in advance for your suggestions,

  Best regards.

  When you manipulate the UIMessage trace (you need this before the return of the event or you will present the race conditions), download myuimessage. Thread. Then call Thread.GetSequenceContext (0, & Iplease).

  And then on the context of the sequence, either go to PreviousStep.Result if it exists, or watch Locals.ResultList.

  Trace events occur between the steps executed step the more recently is the previous step, but it is also a trace event to the beginning before any measure have run at this time, there will be a previous step.

  Hope this helps,

  -Doug

• Read the last value of a large file of PDM

  Hello everyone!

  I hope someone can help out me with this one.

  I try to put in place a program that can read the last value of one of the large channels of different TDMS files but I just can´t find a way to do it.

  I would appreciate help for my little problem.

  Thank you very much in advance for your support.

  Kasim.

  Hello

  You can use the following playback TDMS Set Position feature included in the PDM API.  This function receives a parameter called "(0:start)", which can be set to 1 to go to end of the file.  In this way, you can read the last value written to the PDM file.

  I hope this helps!

  Anuar Rojas

• urgent request: how to read the value of a register using VISA read?

  Hello world

  This is a very urgent investigation. can someone help me please? Thank you very much!!

  I wrote a few commands in several registers using VISA write. now, I want to read the value of a different register.

  But the bytes returned are just the commands, I wrote before and a few other commands that I don't know what they are for.

  This is the format of the command, and I enclose the sheet... I want to read the value of register (0 * 41)

  .

  Ravens, if you have something more than me, do not so much it at all =)

  The command you have posted has several components:

  The gray area of the transport layer uses for a checksum

  several bits set to 0.

  a single bit to define if it's a read/write operation

  a byte to identify the register of interests.

  two bytes for the data.

  With what you have provided, there are only three things we need to worry:

  (1) set the R/W bit to 0 to mean we're reading rather than write.

  (2) set the second byte 0 x 41 to focus on the register of interests.

  (3) with a reading, I can't imagine the last issue of two bytes.  They probably ignored.  The documentation you provided does nothing to explain this.  The most logical thing I can think is that these two bits contain the data, you go to the registry if you set the R/W bit to 1.

  There are two parts to this communication.  The first part is an entry VISA to send this control unit.  It is likely that you will need to complete the message.  You will need to know how to do this.

  The device must respond with the message that you mentioned in the original post.  Crows is right.  He's coming back as a string.  You can use the subset of string to separate the components defined by the standard.  You can use these components to determine if the data is legitimate and then do what you want with the data.

• Re-read in values in the measurement file when the file is updated

  Hello

  I'm trying to control a power supply with labview and adjust the tension. I currently work reading in a file and measures affecting the value in the file. I now have the question I want to update this value when the file is modified, as read in the file again when it is updated and set the voltage again. I've tried several things, but if I put the file in the while loop, then it plays once and then returns 0 after the first loop. Outside the while loop it reads only the initial value.

  I'm quite new to labview so any help would be appreciated.

  Thank you

  E

  You can use the File Info VI for the time that the file was modified.  If the time has changed, read the new values.

• The variant reading control label

  Hello

  I have a Variant that contains the names and addresses of the various controls. I want to do is be able to read only the label names (in the screenshot, AO3 AO4 address, address, etc.). I tried to use a flatten to a string, but the string data contains the location of the physical address (not the label name). Is there an easy way to read just this first piece of infromation? I also tried to use the variant to the data, but I don't always know what type of data is going to be. Thank you.

  Thank you all! I'll go with the OpenG solution. So far, everything is fine =)