Number of cycles Express VI outputs '0' on target with simulated FPGA of e/s

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• How to manage the turnover in number of cycles of FPGA output?

  I wrote a little VI that counts ticks on a set of lines of DI for a period of time. It uses the number of cycles of VI to determine how much time has passed since he started running. The output of this VI is a U32, and subtraction function looks like it going to saturate to '0' if the number of cycles longer rolls. How can I handle this situation to prevent the VI to leave earlier?

  

  Integer arithmetic must manage calculation rolling correctly (for example if your value is a U8 and you do 3-250, you should get 9). I guess (although I never checked) it works even in the FPGA. You can do a simple check yourself with explicit code. It would be nothing less than a complete cycle of safe, so it depends how much time it takes. If it is ms, it would take about 50 days. In your case, it seems that you have configured the service to be in us, so it would be somewhere more than an hour. If that's not enough, then you can maintain the real value in a U64 and then take the number of us that passing in each iteration and that adds to the U64.

• Number of cycles in the target FPGA VI

  Hello to everyone.

  I'm working on a project where I use sb RIO 9636. I subtract a number of past and present of the encoder pulses. Here, I have attached VI that I use as target VI. When I use simulated I/O lets say that the program works correctly. When I compile VI on sbRIO I noticed that the LED indicator named x = y? never flashes (even if she flashes simulation).  Also, when I put indicaton on the number of cycles of control, counting starts from a few very very valuable.

  Could someone help me?

  Thanks in advance.

  Hi Chupka993,

  I suspect that part of the behavior of the that you describe, is that when you change the clock of the loop, you change the speed at which the loop works. As GerdW said, this loop timer setting gives your code a rate at which it should run. For example, defining 1ms means that your code inside this loop executes once per millisecond, or 1000 Hz. ticks would work similarly, but I think the timescale ticks of the FPGA clock which is generally 40 MHz on our devices.

  When you have the timer set to 1 millisecond loop, the code in the loop executes 1,000 times per second, and your iteration count would be 1000 times before update output, which means that your code runs a full 1000 iterations once per second. If you change the clock of the loop of 2 milliseconds, the loop will run 500 times a second sense that your 1000 iterations would take 2 seconds to run. I think that the behavior you're seeing is because the iterations are produce faster that you intend.

  You need to understand exactly how much time it should take your loop to run 1000 times and then set the timer loop to the appropriate value to achieve this goal.

• How to control the number of cycles?

  I am a new user and I would like to ask a question. I use this VI (which is attached) and I want to control the number of cycles of the generated wave (sine, Triangle, saw tooth place).

  How can I change the VI to do this?

  Best regards

  Michael

  Hi FaisalF,

  Looks like you're more interested in the output of a finite number of data. There is one VI example comes with LabVIEW that has this feature called tension - finished Output.vi. Then, you just create an array that will hold your 600 samples for 3 cycles of a wave of 5 Hz and entry of this table to the write function DAQmx in this VI.

• Is it good to keep my macbook on charge all the time? This reduces the number of cycles of battery I would have otherwise?

  I have a 2015 13-inch macbook pro Retina display. What is the best way to keep the battery in good conditions? In particular: When should I charge it? Only when the power is low)<20%) or="" anytime="" that="" i="" can?="" more="" in="" particular:="" if="" i="" keep="" it="" in="" charge="" all="" the="" time,="" will="" this="" be="" good="" or="" bad="" for="" the="" battery?="" will="" it="" reduce="" the="" number="" of="" battery="" cycles="" that="" i="" would="" otherwise="" have?="" many="">

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  If you keep the computer always connected, make sure that at least twice a month

  Run it on battery until battery charge level falls to about 40-50%.

  Please don't completely discharge the battery. Discharge the battery completely will reduce wear and tear on the battery.

  Trying to keep the number of Cycles of battery low does ' t help.

  For more information:

  Section: To optimize the battery life

  http://support.Apple.com/en-us/HT204054

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• Number of cycles

  How to make a turn of the indicator on after 15 seconds using the number of cycles?

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• synchronize two number of cycles

  Hello world!

  I want to synchronize two number of cycles. I want two number of cycles to start the countdown together. I have two check County file VI, which was attached. I would like to ask if two ticks start at the same time counting.

  I thank in advance.

  In LV, you don't 'start' a number of cycles. The counter tick count functions interact with which is a 32-bit counter that starts when the fact of LV. You can compare the number in two places in your code, and can be assured that they are both reading from the same starting point.

  But I am totally confused by your code. What you trying to do?

  Mike...

• 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.

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• How to avoid overflowing number of cycles?

  Hello.

  I was warned for a long time on the use of number of cycles as basis for some time structure timeout, because the number of cycles is beyond every 49 days or more.  Since then, I had a bad taste in my mouth about its use, and I wonder what I can do about it.  I tried a bit with the comparison of the value of the number of cycles with the time and subtracting the value of timeout to the value of the number of cycles if this would cause a number of cycles to overflow.  But the code happens to be more than a bit messy and not very flexible.  Just see the attached VI.  Does anyone have a good solution on how to get around this problem?

  I found this blog post from a guy who has made a conversion from 32 to 64 bit VI, and it seems to be just to the top of my ally.  But I was not able to reproduce because I recognize not all symbols (especially the small round one connected to the structure of matter at the far left).

  This wanring should be interpreted such that you should not expect the value to be always on the rise.

  The difference between the two ms tick counties will work even during the maxi over because this is how the calculation works for a U32. So if you subtract the beginning of the current, you can always compare the difference with the other to check if a certain amout of time spent.

  Ben

• How do you control the number of cycles showed on the chart

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  Right-click in the list and set the required number of points in the history buffer (right-click... length of the graphic history...). Then set the x axis not autoscale and cover your historical range complete.

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• I can't find my serial number for Photoshop Elements version 8. It came with a HP computer I bought in 2010. I recently had to do a recovery, it has been uninstalled. I moved since then and don't know how to get the serial number.

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  Atul_Saini