Structure of the case and Numeric Indicator

Similar Questions

• Not not not in the Structure of the case

  You want to get suggestions on the best way to do it.  In theory, it will be the best if I can create a structure to deal with condition 'no '.  What I mean, it's the entrance to the structure of matter is 3, and I have a case which, with such condition does not (1, 2, 4, 5), the case would run.

  Another example

  If different x of 1, 2, 4, 5, then

  to do this

  Else If x is not equal to 6, 7, 8, 9, and then

  do this

  End

  Yik

  ^ You can also simply make a table with your constant inside and feed to the comparison table, and who publishes an array of bool.

  Another approach would be to wire the digital directly to the structure of the case and type the desired number of a case to represent.  Several case numbers are separated by commas.  A range of numbers can be represented by "..".  for example 6,7,8,9 = 6.9 in the same way... 0 is the range - inf by 0 and 5... is all values greater than or equal to 5.

  

• Structure of the case: selector values are not unique

  Get the error: case Structure: selector values are not unique...

  With the help of producer-consumer architecture w / SW-events and comms of queue.  DevSuite - LV2014

  My loop of consumers use a typedef for case selection control.  The typedef is an enum and the names of text for each value.  All my files are in quotes and there are no duplicates in the typedef or structure of the case.

  Help

  JF

  Jeff.F wrote:

  Get the error: case Structure: selector values are not unique...

  With the help of producer-consumer architecture w / SW-events and comms of queue.  DevSuite - LV2014

  My loop of consumers use a typedef for case selection control.  The typedef is an enum and the names of text for each value.  All my files are in quotes and there are no duplicates in the typedef or structure of the case.

  Help

  JF

  I don't know what you're doing exactly what I think. Do not write text in quotes for values box. Wire the enum in the switch case, right-click on the structure of the case and select "add a case for each value.

  It might be a little different because I'm teliing memory.

  Ben64

• Get the button to change automatically after the structure of the case is completed once.

  Hi all

  The purpose of this VI (which I lightened it for the purpose of the present) is to do nothing until the START button is true. Then the structure of the case, and the string will be sent to the MSH. I need this too such that the stop command can be sent at any time and will be sent when the STOP button is true.

  At the present time, nothing happens until the BEGINNING is true, then the case structure begins and ends inside while loop. BUT then the outer while loop restarts again and the inside of a cheek through which returns once again the order of the string to the MSH (an unwanted process) because the START button is always true.

  Is there a way to get the start button to return to a State of false once inside while the loop is over?

  (Other solutions giving the same result would be very appreciated also!)

  BBRO says:

  The purpose of this VI (which I lightened it for the purpose of the present) is to do nothing until the START button is true.

  Well, your code sends a command to stop immediately after starting the program while consuming all CPU running the inner loop in parallel as fast as the computer allows. (Since there is no dependence on the data, the inner loop and the stop code both run at the same time. LabVIEW does NOT run left to right!).

  All you probably need is a simple while loop, a structure of the event with three cases and all the buttons in the action of locking.

  See attached a simple change, LabVIEW 9.0.

  (And please don't maximise front panel and diagram for full screen, especially if there isn't much here.) Sometimes we want to work on other things at the same time, for example to write this response!)

• Structure of the case duplicates all the indicators on the user interface.

  I create a true/false case structure that contains several indicators for each of the cases respectively.  These indicators are displayed simultaneously on the user interface.  Is there a way to have indicators or indicators to replace the other as the other case is active or control must be in the user interface at the same time?

  Thank you!

  Is there a reason you want to duplicate the indicators?  The normal practice is to move the indicators outside the structure of the case and the wire coming from each case out through a tunnel.

• Structure of the matter and structure of the event with a condition of the indicator (boolean)

  Hello

  I read a lot of posts but I can't solve my problem. I would like to set up a business structure and the structure of the event, and the condition to run the code inside is a Boolean indicator, in this case called Wahnelt (screenshot). I know I should use signal value, but I don't know how to implement. Here is the program:

  

  Any help will be more thankful

  a state machine with timer elapsed...

• I want to display strings that are in the structure of the case, in a text area

  Hello

  I write a vi, which has the structure of the event inside that one

  structure of the case.

  I have a problem, I have two cases.

  (1) when the value is true it executes the real deal, first it reads the string constant and second string indicator which is my out is put.

  (2) in the case of false it is pritty much even.

  I want to display the entries and exit puts different situations in the same text box is one for input and one for output.

  Someone can help me.

  
  

• Difficulties related to the Structure of the case

  Using a structure of the case, I had a problem with the structure of the case. I need the case structure to change a vlue as the case of entry provided.

  However, the entries of cases (boolean) I want to give the structure of the case are '<0' ,="" '="0'," '="">0' here I can provide only structure dealing with > 0 or<>

  How can I include the condition ' = 0' in the case of entry so that the structure of the case ".

  1 decreases the value of the parameter if the case is '<0' >

  2 does not change the value of the parameter if the case is '0',

  3 increases the value of the parameter if the case is ' > 0.

  I've included the VI that I work as an illustration.

  PS - the VI has a selector to change the input variable and has a digital indicator to display the output of the structure of the case variable. Thus, the digital indicator must be constant, if the input variable is not changed.

  Thank you in advance.

  As others have said, you can connect the digital directly to the switch case and create ranges.  Since you'll get weird rounded when using floating point data types, use the function Sign (in the digital palette) to convert your difference in [-1.0.1] and then use this result to the structure of the case.

• How to stop queuing in the structure of the case

  I'm trying to find the Summit and the Valley of the signal. I'm able to find it, but I don't want to make the zero with the pic. I just want to get the value of Ridge and Valley. Is it possible to stop queuing the values in the structure of the case? As I have a several signals which peak/Valley must be found that I can't use the library functions.

  Kanye wrote:

  I'm trying to find the Summit and the Valley of the signal. I'm able to find it, but I don't want to make the zero with the pic.

  First of all, and more which has been mentioned, there are serious shortcomings, making the Subvi is not very universal.

  • Your Subvi does NOT export the correct value of the Ridge (or Valley), but the value just after (which is more a peak or a Valley!)
  
  
  • Your Subvi is only the positive peaks and valleys negative. This seems very restrictive. In general, you could easily have a Valley even if all the data is positive. Right? (With the exception of the Valley of death for example, most of the valleys are above sea level, for example )
  
  
  • Your code is extremely complicated, with two sets of structures of the case, each stacked three deep, four change records and tons of comparisons. Here is a simpler version. (To imitate your outings, place a statement select after each comparison and output the value or zero depending on the result of the comparison).

• Help with the Structures of the case

  I have a problem switching between the true and false cases between the structures of the case. I'm writing a VI that generates a random number between 0 and 10 once every 0.5 seconds, and then adds the numbers until the total reaches or exceeds 100. At that time, it should start to subtract the number generated at random until it reaches 0, then switch again adding etc.

  I have a problem switching to the case of 'false' once the sum exceeds 100. If anyone can help with that would be great!

  To make things more simple exchange the Boolean value for an enumeration with only two values you can call "Count Up" and "Count Down".

  Create a second shift register to hold the enumerated value specifying whether to "Count Up" or "Count Down". Initialize the new register shift to count up, and in the case of "Count Up" in the structure of the case, increment the value of data and test to see if it is greater than 100. If this is not the case, do not change the value in the registry to shift direction. If data has exceeded the limit, change the values in the shift of direction register account to "Count Down".

  In the case of 'Count Down', decrement the value of data and test a value less than 0. When the value of the data is less than the lower limit, change the values in the change of direction of the County Register to "Count Up" and you're done.

  Mike...

• Store/communicate IMAQ image (binary) between the structures of the case

  Hi all

  I am trying to build a VI for a controlled industrial vision system and it has 2 process: first an image of calibration comes a sequence of discrete of images. After that, the user can start and stop the continuous controlled process of machine vision. This process then uses the calibration image to remove some background objects etc..

  As the two processes cannot run at the same time, I programmed it as an event-driven state machine (following this tutorial: https://www.youtube.com/watch?v=RuIN31rSO2k) combined with continuous acquisition.

  My question is how to store and communicate the image of calibration between the structures of the case. It is basically a static image that is generated at the start of a race and then used once during the continuous control loop.

  Now, I tried storing in an IMAQ control with a local variable, but it does not work when I try to read the image. Preference image must be passed the bottom without any interference of the façade. I could probably make it work if I pass on the image in a table and then convert it back, but I want to avoid unnecessary conversions and understand how to manage the images correctly.

  Joined codeblock showing the part where I (attempt to) store the image and how the process of continuous measurement is connected (Yes, I know the live view is wired incorrectly in the scheme of the latter, it was a test to show a colleague).

  Thanks in advance for any help!

  Consider placing the image, the data record in a turn on your main WHILE loop.

• Enum (type def) - structure of the case called update error

  Hello

  1. One of my (type def) enums is not updated the names of structure cases. I found something that looks like a probable error in the case where the structure,
  2. I had created one of the constants in the enumeration before I did a typedef. Therefore, I made new constants since the typedef and replace the original ones. and still, the structure of the case is not being updated.

  How can I solve this?

  also, I have one state machine inside the other. Is this right way to program?

  

  Somewhere in your code, you have the wrong typedef, or don't replace a control by the typedef. Must not have replaced all. I don't know if there is an easy way to search for; You may need to go through anyway.

• Why push button and stop button does not work in the structure of the casing and buckle my VI? (code attached)

  I am a beginner. I'm trying to create a simple VI only switches beetween two types of signals like sine and triangle when someone press on the push button and at the same time, save the data in the file to my desktop. I also have a stop button which no longer record data.  Here are my questions and dproblems:

  1. when I press the button, it does not the true and false in the structure of the case so that I can see the triangle wave stops and begins the sine waveform table.

  2 when I press the stop button, I want the program still running, but the process of writing data in time the loop stops. I don't mind if the graph of the wave stops too but it would be better for the user to see the wave form is running, but the data will stop recording.

  3. Although the condition of the loop did not accept the local variable for the stop button inside the loop or within the structure of the case, so I put the button outside all the loops and the structure.  (I know that this is a problem, I do not know how to use a single button several times in a single code. The local variable did not work the world premiere? I have to?)

  4. the data file it creates hase a lot of lines and columns. I expect a time column and a column of mixed signals based on the push button amplititude this user press every time.  I did that with the acquisition of data and a sensor, it automatically gives me the voltage and time in a column. I tried 2D and 1 d and it has not changed anything.

  Thank you for your help

  

  

  Like you said, you read only your entries at the beginning, then whatever value they had before you hit run is worth to be seen by the rest of the code. Programming LabVIEW is based entirely on the data flow and parallelism. It is incredibly powerful and has led to its success over the years (coupled with graphical programming), but is usually one of the first things the new developers stumble on. This is a simple resource to familiarize themselves with its functioning. The function to highlight execution is a great way to watch how your application uses data streams.

  

  Simple code goes like this:

  • Containing the main code of while loop
    • Inside of the whole loop is all user interaction code or modify the code entry
    • Stop the terminal loop is attached to stop certain criteria or user selection of a stop button
  • Loop initialization above all if necessary
  • Closing referrals and communications, etc after all loop

  It's very simple code. If you want to watch in more advanced architectures that are scalable, Google "LabVIEW State Machine" or "LabVIEW producer consumer."

  If you are just starting, you should do a free training have the capabilities of LabVIEW.

  "Give me six hours to chop down a tree and I will spend the first four sharpening the axe.  -Abraham Lincoln

  Here are some free training focused mainly on LabVIEW and hardware tools to help get started.

  Training center of NOR

  NEITHER start-up

  -Hardware Basics

  -Guide of MyRIO project Essentials (a lot of good simple circuits with links to youtube events)

  -LabVEW databases

  -DAQ Application tutorials

  -CRIO Developer's guide

  Learning OR training videos resources

  Introduction to LabVIEW for 3 hours

  Introduction to LabVIEW for 6 hours
  Paced self-study for students
  Self Paced Training beginner to advanced, required SSP
  LabVIEW training Wiki

• Value of cluster lost when you leave the structure of the case

  Hi all

  I'm having a problem with a particular VI I'm working. (FYI it's in Labview 8.0)

  The VI is set to run a current source, voltmeter and thermometer, then recording and graph the data in various ways that can be selected by the user.

  Everything seems to work fine except a particular graphic method. When I try to graph current compared to the tension, the current value is lost estates. In a case the current and voltage are combined to form a cluster, and then leave the case structure to be later appended to a table of cluster.

  However, the value of the cluster is lost when the chart is set for the voltage vs. Any other method and it works correctly.

  I can't understand why this is happening as it does not make much sense than other methods of work charts, but this one isn't when it is coded the same exact other than having the different variables.

  I have attached the VI with added indicators showing that the value of cluster is lost once he leaves the box structure. Any help would be appreciated.

  Thank you very much and I apologize for my extremely messy VI.

  -Nathan Cernetic

  You really need to boil this down to something we can run and reproduce the problem.

  Have you tried to break a few relevant connections and rewire? Something is possibly corrupt.

  Besides being a mess, your VI has quite a few glaring errors.

  Let's take a look at the structures at the top right:

  • 90% of the code is the same in all the structures of three cases, so all that needs to be inside the structure is the small part where you built the table 2D. All the rest is outside of the case.
  • The structure of the sequence has no useful function.
  • Why do you need to reverse the table with each iteration of the small loop FOR? Once before the loop would be sufficient. Right?
  • Why you use table built inside the small loop FOR, but no autoindex on the edge of the loop? All you ever get is an array containing exactly one element, no matter how the loop runs. Seems unnecessary! (see below for an alternative image).
  • You wouldn't even need to reverse if you want to use "built the table" instead of "insert into the table at position 0" in the central part.

  

  Other: You constantly hammer all nodes of your property. The only need that will be called when things change. Again, you have far too many cases. For example, in the structure of the case where you are having problems, the same nodes of property exist in all cases. A single instance of the property node belong outside the case and only the string inside each case constants. Whenever the code is the same in all cases a case structure, which code belongs to the outside!

• Switch timer within the structure of the case?

  Hello

  I am relatively new to LabVIEW, hoping someone can help me with something that I am trying to solve. I am working on a system for the acquisition of data for a formula SAE car and try to design a VI that will be time how long it takes for the car complete the trial of acceleration of 75 m. The timer will be actvated in now the pedal for 5 seconds and save time for the file when 75 m is complete.

  I've set up a business structure that works in the following order.

  1: Check the brake pressure (if threshold, go to 2)

  2: how long the brake was pressed for time. (If more than 5 seconds switch to 3. If the brake is provided within this period, date back to 1)

  3 whether the movement of the wheel (wheel strats move, go to 4, otherwise, keep control)

  4. begin to measure speed and distance. (once reached, proceed to 5)

  5. replace all over again, save the file (then return to 1)

  I'm pretty happy with everything but part 2. I tried a timer pending within a sequence of flat, check that the pressure is fine, but pedal pulses rather that now he can active it, and using a true/false with the same function case structure waiting does not like LabVIEW bed not true/false value, once within the structure of the case.

  I would be grateful if someone could point me in the right direction!

  Thank you

  Kevin

  get rid of the sequence, here your timer elapsed, also got rid of your case to check brake pressure, do not use ms of waiting for your timing of sequence...