test of the structure of the case

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• Turn off the LEDs in the structure of the case

  Hello

  I was wondering if someone could help me solve a problem in a software test bench that I am developing. I have attached some of my code in which the problem is visible. I have a business structure that is triggered by a 'push button '. I want the TEST that is currently RUNNING LED remain lit until the end of the execution of the case structure (condition true) then shuts down once it is completed. But the LED does not turn off and remains lit. Is that what I can do in the condition False to activate the LED is off when the code is not running. Please note that to run the program, you will need to "run continuously. I want until the led turns off after getting the 'result' so that the software operator can know that he is free to perform the next test. But now when the 'Start Test 2 "is executed after 'Start Test', the LED stays on.

  It might be a simple solution that I can be not familiar with, but forgive me, I am a new user of Labview and I could not find a solution to this online.

  Thank you.

  Kind regards
  DPAC

  Hi DPAC.

  simple solution as requested:

  

• 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.

• How can I sort the selector non-unique values and make them unique in the structure of the case?

  I want to clarify 3 ranges as breeders of the case.  For example, I am able mV and I want 0.10, 10.20 and 20.30, but, when I enter them in this way, I get an error that says that the selection values are not unique.

  I want case to answer when the input is greater than 0 but less than 10.

  I want the second case to react when the input is greater than 10, but less than 20.

  I want the third case to react when the input is higher than 20, but less than 30.

  And there is the case by default, 0.  The case structure think my default is bunk with my case?  How a list correctly these ranges in the Tag Chooser structure cases to avoid the error?

  Also, I plugged in my blood "to LONG integer" and then to the Terminal case structure to convert entire for the entry of case structure (blue wire).  Is it the right thing to do, because my values of tension will certainly be decimal numbers, not integers.

  Before converting in I32, for example, use "turn to + inf" and settle the case accordingly.

  (A plain to_I32 rounds to the nearest integer, making it impossible to meet limits).

• DAQ Assistant no recorded data during the case structure is false

  I try to turn it on turn off heater using intermittent relay module (some time and some free time). The program attached that do very well. Except that I also want to record the temperature of the radiator using materials DAQ Assistant and it records all the data when the case structure is false. I mean, when the relay is off. I tried to use the vi for the acquisition of data in the structure of the case. However, aparently it is not possible to call the module analog input even twice in the same program. All solutions? Thanks in advance.

  
  

• Disable & gray a case of structure of the case

  Hello!

  I use 2 business structure to choose if I want a channel 'create' or not. I don't know if it's the best way to do it but... It s okay if I use this control type to choose the case? and... How can I disable and grey items in the not selected case?

  Thank you to

  TXL

  Yes you can do to control or indicator... Use the property node...

  

  

• 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).

• SGL and variable U32 are wired to same variable DBL through the structure of the case, block data poster SGL DBL during case U32.

  Hello

  Here, I have attached an example, similar code module is used in our project.

  In this example in the control of two structures business SGL and U32 panels is directly related to the signpost DBL. If I give 4294967295(U32 value of maximum range in the case of forgery under the example) its display 4294967296.

  Please give me the solution to show the correct value of U32 in signpost DBL.

  Thank you

  Wherry

  In your code, 4294967295 is first converted to the SGL (on the edge of the box structure), then to the DBL. But this value may not be exactly converted SGL (due to lack of significant digits).

  You should convert the SGL DBL value in the case of true.

• optimize the case for a same computation structures

  Hi all. I want to compare an array of numbers with 0 in the first place, if they are greater than zero, we do a simple calculation such as 10 + 10; If they are less than 0, we make another simple calculation like 10-5; of course, it can be achieved by the VI I wrote it in the attachment, but I wonder if we have the best ways to solve it, maybe a single structure case because we have exactly the same calculation for the same situation. Thank you for your helpful suggestions. I updated a picture just in case if you do not want to download the VI.

  You can search the table of Boolean 1 d to the value True.  Then, the value will be-1 (no true), 0, 1, 2, or 3 for the index.  HAV that animate a single structure case. When the respective indicator is in each case.

  Of course if all calculations are exactly the same (assuming 10-5 is just simplified), you can put the calculation outside the structure of the case and feed it to the respective case.

  EDIT: You don't need to build an array of zeros to compare to another array.  You can simply use a zero scalar.  And you don't need that.  Just use the primitive > 0.

  In fact, I don't really know what you're trying to do here.  Why do you have different indicators in cases of false and real cases?

• Synchronize the case structure with enum update

  Hi, I created a control enum initially with the "First" and "Second" values. In the block diagram, I created a node of this enum control property and it is connected to a box structure. The structure of business allows me to manage the condition "First" or "Second" correctly.

  I then modified the items in my enum so there is now a 'third party '. My problem is that structure business conditions still show as 'First' and 'second '; That is to say, I can't handle the "Third" condition My question is how to synchronize my case structure to show the updated enum values?

  VI, attached, the sample created with LabVIEW 2009 version 9.0f3 (32-bit) running on Windows 7.

  Thank you all for your help in advance.

  Michael O'Shea

  

  First tip: remove the value 'default' first case

  If you have done your VI pauses when you change your enum, which is a good thing.

  Now to synchronize, do a right-click on the border of the structure of the case and select 'add the case for all values', this is the option you are looking for.

  Tone

• Structure of the event within the structure of the case run once

  Hi all

  I am a controller using myRIO and labview where the program compares a value of the probe in a "Preset" and then choose a structure case depending on what type of air supply is required. What can be seen on the picture, for example, is 0 if saturated air supply is necessary.

  The structure of the event is used to send a signal to step to the stepper motors to open the valves (closing is still pretty much in the same way). In any case, the event turns my valves 90 degrees. I read the sensor all a second, however, when the case remains unchanged, the case runs the event again causing my engines running at 90 degrees per second (essentially continuously). What I'm looking for is a way to send the signal to step only once until a new case is selected.

  He is not on the photo, but this is all within the large loop.

  Apologies for any bad/cringeworthy coding, it is literally my first program always using labview. I can post the full VI if you need.

  Any ideas would be very appreciated! Thank you

  Simos wrote:

  crossrulz you have a simple example by chance that uses the feedback node?

  See if that helps

  

• problem of data flow in the case structures (using a state machine)

  Good day everyone.

  I'm having a problem with the flow of data between the structures of the case.

  I try to use an example of a state machine for this simple problem. but when I try to send data of a box structure to change the State of the code. It will change not in the desirable output, instead, it offers the possibility that the exit options emul.

  could someone please point what I'm doing wrong here. Any kind of help would be very appreciated.

  With a quick glance at your photos a question you have is that you use not data flow. You write your status updated in local variables value. Your State should pass through the case structures are a single wire. Playback of your order "Enum", happened in the register shift on the right side of your loop probably get running and reading before any processing occurs within the structure of your business. That's why you're reading the old value of the State and not the update. or have a classic case of a race condition in your code.

• 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.

  

• 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.

• Structure of the case is not updated after changing type "enum".

  Hello

  After changing a type of 'enum', the structure of the case has not been last updated - it still contain 2 States, while after modificatiion, it must contain 4 cases.

  Is this a normal behavior?

  Thank you

  Pavel