Boolean timed switching

Similar Questions

• How do switch you between 2 numeric values using a Boolean switch?

  Hello

  I'm a newbie to labview, so it is perhaps easy to answer.

  I would like to perform a calculation which, according to the test unit, will require a different numeric value to use in the Calc.

  I tried to use a Boolean switch to choose which constant must be used during runtime mode as well for example or 0.01 or 0.02 will be selected. The idea is to labview so insert the constant selected in the calculation and spit out the answer.

  There is only one output on the Boolean toggle switch and not of entry so that I can't work out how to do it. If there were 2 inputs and 1 output it would do the job.

  Thank you

  Andy

  Try the joint.  I have provided two methods.

• Boolean control reset

  Hi all

  Please take a look at my VI

  what I get here is the following

  I have four buttons. User can press one of these 4 buttons to start a routine pattern-block. what I did, is that when the user presses the botton, a string constant is compared to an existing string constants array and then executes the case of vaues. Now, what I'm having the problem is that I've changed the Boolean control "Switch When you press on", now when I press one botton I have to press it again before you press any botton (due to the action of mechinalcal, I chose).  How I can implent a condition that, when I press a botton the previous control resets its self... for example if I first press option 1, then when I press option 2 I donot have to press option 1 option 2. Pressing option 2 should automatically reset option 1.

  I know that more easy way is to use a structure of the event... but the main thing I need is to know how to get the bottonto reset when you press another botton

  concerning

  (Please ignore the above, they have no sense and just complicate matters).

  You want features radio button , place so your four buttons inside a radio button control. That's all!

  Here is a simple example, see if it makes sense.

  (btw: your code is far too complicated for this simple task.) Structures of case one (or zero) should be sufficient. Any UI toplevel loop must also be a small wait)

• Auto-clicker

  I am trying to write a "auto-clicker" VI, or a pulse generator. Basically, I want to do a 'timer' automatic switch towers works (out boolean) with time delay set by the user, without using an acquisition card data. Basically I want a Boolean automatic switch that turns on.

  The reason for this is I want the user to have an option to click to refresh or just put an automatic timer that will automatically update (reboot on average).

  So what I try to do is a simple switch to the user to reboot (already connected) and I would like to use a GOLD operation, now the next step is I do not know how to generate a Boolean result.

  How can I create a generator of impulses in this way? that automatically 'clicks' with a time delay set by the user?

  Help would be much appreciated! Thank you!

  

  Look at the vi elapsed time.

  To consider a step further, put in a case structure which is governed by thr Auto medium boolean in your image. When the automatic way is turned off, make the outcome of the false case structure, otherwise make it that has elapsed time output of the vi elapsed time. Or this result with your refresh button.

• ! used in rocking

  Hi all
  
  Does anyone know about the use of the exclamation mark '! ' used in AS3, it is used as a toggle like this;
  
  Called when the mouse pointer is over a text field.
  private void mouseOverListener(e:MouseEvent):void {}
  If the parent of the object TextField Sprite does not
  the form, then move it there. DisplayObjectContainer.contains)
  Returns true if the specified object is a descendant
  of the container.
  If (! e.target.parent.contains (bgRect)) {}
  e.target.parent.addChildAt (bgRect, 0);
  }
  }
  But I can't get my head around, how he Achieves that, as in how that create or act as a toggle? Make me?
  A more simple example may suffice, someone at - it a?
  
  Sorry if this seems a small problem, but it's Sunday; on Sunday, I'm studying AS3. Maybe I just worked through Moocks book too ;) Hahahahahah
  
  Kind regards
  
  Boxing boom

  The! operator reverses a Boolean: sense switch between true and false.

  An example would be:

  var theSkyIsBlue:Boolean = true;
  trace (theSkyIsBlue); true
  theSkyIsBlue =! theSkyIsBlue; / / replaces theSkyIsBlue (which is at this stage) theSkyIsBlue = false
  trace (theSkyIsBlue); fake
  theSkyIsBlue =! theSkyIsBlue; replaces theSkyIsBlue (which is false at this point) theSkyIsBlue = true
  trace (theSkyIsBlue); traces of true new - so the Boolean value alternates between true and false

  In your example, the parent of e.target contains() method returns a Boolean value. It just says either Yes, it's true that the parent contains bgRect, or no, it's false, it does not bgRect.
  In this context the! operator (! e.target.parent.contains (bgRect)) can be regarded as equivalent to:

  If (e.target.parent.contains (bgRect) is false)...

  TS

• Boolean switch that are timed

  I need to order a heating appliance to be switched on for 60 seconds and then be off for 120 seconds, and then the operation be repeated for a number of cycles. My main loop works continuously with a delay of 50 milliseconds, and needs a Boolean signal from switch continuously, so there is no possibility to place a hold or time out function in this loop. When I try to call a Subvi, which has a delay, the output of my main loop would be delayed. Anyone would be able to recommend me in the right direction.

  Do it like that. It initializes the value False, after time, happening to True, and so on.

  

  This could use some cleaning with nodes Select, but it does the job. The result is False for 120, then True for 60 seconds, rinse and repeat.

• Timed Boolean switches with case structure

  I'm trying to implement a control for a switch that, when enabled, a signal of 'essential' lights up for 2 seconds and then turns off, as soon as the essential signal sat for two seconds that the VI should send say that the switch is turned on.  I can't get it work the way I want to. I think it might be a way to do it with a machine to States, but I don't know much about them.

  Hello

  I changed your Boolean lock so it will break again in the off position.  This stops the VI into the case again and again until turns off.  Then I added two registers to hold the values of the indicator to shift.

  I guess that my bias is that you would like to continue to operate in the while loop, which goes back to the case of 'OFF '.   If expand you this to a state machine, you might have several cases, shift registers would provide the 'flag' access status to other cases.

  It is a single method, it fits your application.  How would you install it in a larger design?

  

  Copy the snippet on the desktop, drag on the VI.

  Did you want the keyturn to turn on for two seconds and then have the activated LED light?   If so, you have to move the location of the indicator in the target time while loop, this will in turn while the target time loop times two seconds.

• Control relay with Boolean switch using DAQ assistant 9481 - problems

  Sorry for what may be a stupid question but I'm stuck in quicksand.

  I use a relay module 9481 and have two external relays connected lines 0 and 1.

  When I create a digital output 0 line by line, I can run the test inside the express and activate the relay and turn off without problem.

  The generated block DAQ expressed expects a Boolean input of 1 d. (See attached photo).

  I want to connect a Boolean switch relay line disk 0. You can connect live not because the switch is Boolean and the input is Boolean 1 d - I'm a conversation in the pict.

  All plumbing lines display results, the relay never active.

  Any bunch would be greatly appreciated! Thank you

  

  Mr._Mechanical,

  Welcome to the Forums of switch OR this forum is generally intended for products OR-SWITCH [such as the NI PXI-25xx & NI SCXI-11xx], I think I know the answer to your question.

  I think the reason why it's a failure is the conversion you make generates a table of 16 Boolean [as the 'boolean to (0,1)' function creates a data I16 type] with your data more false data points 15.

  

  When you try to control the relay, he sees 16 datapoints are you Commander to a single port [channel] and so error out.

  

  My suggestion would be to use normal DAQmx digital output screw [with, he set up as ' Digital > single channel > single sample > Boolean (1 line) "] rather than the DAQ assistant.

  If you use the daq assistant, simply by using the function 'Building the table' will transform your simple Boolean data point in a Boolean array containing a single element.

  

  While the DAQ assistant is very easy to use, I recommend that you use the DAQ assistant, because this reduces the features and increases the execution time.

• Boolean switch node property in the Sub - VI

  Hi all

  I have a main vi and one under vi.  In my Subvi, he gets a Boolean value from the main vi through property node (see table).  The Subvi queries the Boolean reference until it gets a real.  Apparently, when the Subvi is running, it is not detect changes in the Boolean main vi.  Why is this?

  If it's a Boolean latch, you will get error 1193 whenever you try to read its Value property.  I noticed that you are not checking the output of the reading the property value error, this is why I guess that's the problem.  Read/write, the Value property of a latch that Boolean is not taken in charge.  You will need to pass the Boolean value to use the mechanical action switch... or you will need to find another way to transmit information between your screws

  For more information on the mechanical action of Boolean values, see this help document.

• Write for FPGA Boolean control RT... He switch or lock?

  I have a reset button in my FPGA code that I am trying the RT. Once this button has been programmed, do I need to "pop" back out when the FPGA reads it? The switch/latch function parameters make a difference? If I put it to lock, it will manage the return false, once it is read, for me?

  There is no lock. I think if there was, it would be much easier application handshaking with Boolean values.

• Boolean switch until the released counter + the number of cycles

  Hi, I want to use a Boolean command button (switch release) to rely on a specific value and when obtaining this value (while pressing continuously the button) to turn on an led. If I release this Boolean button, I want to count the time until a value and then to turn off the light, like a hand for a hand detection dry.

  I was thinking of using the number of cycles in a sequence of plate with a delay for the time being I want to split on a matter of true or false, but the problem is that the count of the number of cycles is continuous and not slaughter not on the specific value I want for the power button truning the seeing.

  Any help?

  TNX

  Guy

  
  

• Timed automatic Boolean control

  Hey,.

  I hope it's a simple problem. I want to be able to control the Boolean input to my case structure with "button" on the inside. I want to be able to have the entry which is held to 'true' for x amount of time and be maintained 'false' for y amount of time. More loop on "true" / "false" number time z. IM confident enough on the last part, but I can't find a way to change the Boolean States on a timed basis.

  I have attached the Vi

  Thank you

  Adam

  Hi Adam,.

  I would use a statemachine: your problem is reduced to only two States...

• Toggle Boolean / Switch successfully after VI runs

  I use a stepper motor that changes direction during execution.  I currently have a Boolean control that sends a digital output to the correct port on the controller to reverse the direction.  I do have, however, the Boolean value of the 'real' to 'false' or vice versa after each race, so the engine knows to reverse.  Is it possible to code this in my VI?  Basically I want my VI just to understand what the Boolean value is set to the "and" at the end of the switch of execution the value of the Boolean value to the opposite value.  If my code is needed it can be provided.

  Emily

  Sorry I don't have LV8.2, you could post a version recorded for this or my guess is that with the posted code there are a lot of people who could help you very quickly.

  Here is an example of the two methods I described.  The while loop with shift register is a bit more general, I use it when I want a value "remember" when I run VI again.

• How to detect the correct sequence of Boolean switches pushed

  Hello

  My program is all what I want too. However, I need to have the Boolean switches (digital inputs when wired to the equipment) be detected in the right sequence. There are 16 switches on a Board of material. The test subject is displayed 3 colors before hand and the sequence of buttons to push when prompted on the screen with one of the colors, each color pertains to a specific sequence of 4 switches pushed on 16 as quickly as possible. The sequence of buttons remains always the same according to the three colors red, yellow, blue.

  In the program, which is 99% working properly I tried to use a sequence of plate. It will give me a real if I hit the switches correctly - but will also give a real if I hit them back etc... I thought that a flat sequence is read from left to right?

  Then I messed around by using a structured event - the array of switches, pushed index and compare it to a table of values control. I understand how it works, but the correct code is elusive.

  I have attached a picture of program I did but it lacks the proper sequence. (Flat sequence)

  I have included the code for the structured event that I messed with. Don't laugh - I was just making experiences - I've never used a structured sequence before configuration.

  Hope someone can help me.

  Ned

  Hi Ned,.

  Your producer-consumer model is actually very close to work.  In the original version of screenshot, it seems you are trying to use the structure of sequence to capture the order, but in reality you will capture only the AND logical of all the 4 buttons with no information about the order in which they were pressed.  The structure of sequence does not by itself is waiting for an event to happen inside the frame, it which means that all 4 frames read as fast as the processor moves to their reading - which will be very fast.

  I've made a few changes to your VI and renamed him Rev 1.  See if it makes a little more sense with the notes I made on the front panel.  I also did a different version with a loop simple and some added functionality (-Ko), just in case Your ' e interested in another way to look at it.

  Kurt

• definition programmatically switch Boolean so that a handler will act on this matter.

  Hello

  Is there a way to programmatically set a Boolean switch so that a handler will act on this matter? I use an interface developed by another group, with producer/consumer structure, as part of a validation of equipment. I want to create a separate vi that will control the GUI. Currently I can put the Boolean commands using an invoke node but the event handler does not react to them. My suspicion is that it's a mechanical action of Booleans. Is there a way to do this with to change the mechanical action?

  Pat

  Well, a switch is usually trigger (where the name!). You never said you try to use Boolean action latch.

  Yes, local variables and the properties of the value can not be used to lock the Boolean action because they are handed over to the State by default when terminal is read by the code, and if you would allow them to be read and put in several places, you generate a giant mess.