Then as the loop timer Timing vannes_ouvertes. Elements

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  My scanner connected to my pc so that at the same time my printer is not... u can help me pleasei have a Canon MP250 3 in 1. It is connected by cable.

  My scanner connected to my pc so that at the same time my printer is not... u can help me pleasei have a Canon MP250 3 in 1. It is connected by cable.

  You must install the driver. Visit the Canon website to download and install the latest version of the driver.

• Programming of a conditional FOR the timing of the STOP button on the loops

  I have a conditional FOR loop with a STOP button, however, the nature of LabVIEW data flow, the stop button is now being questioned at some point before the end of the loop. A control not having no entry, I can't connect to the last operation of a single iteration of the loop to trigger the vote on the STOP command, and I prefer not to use a flat sequence just for the power button if I can avoid it. I've considered using a structure of the event, but I don't want to force the loop to wait that the stop button to be pressed, I want just the loop to EXIT, * IF * the stop button is pressed... but I want the stop button to be questioned at the end of the loop, so if the user presses the button stop at any time in the loop , at the end of the iteration, the loop will end... that makes sense? At present, given that the stop button is called once at some arbitrary during the iteration of the loop time, if the user presses the stop button after he is questioned, the loop must run an extra iteration, and I don't want that to happen.

  ... in any case, I guess I'm looking for a more elegant way to implement that having to use a flat sequence just for the stop button.

  Sorry, but you'll have to use a sequence structure.  This is why they are there.  Sometimes they have their purposes.  Here is how I would handle it.

  

• Variable is empty but the loop is executed

  Hello

  Can someone explain what follows...

  C:\ > $vms = Get - VM

  C:\ > $vms

  C:\ > foreach ($vm in $vms) {Write-Host "Test $vm"}

  Test

  C:\ > Get-PowerCLIVersion

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  ---

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  Connected to an ESXi 4.1 root hosts, there is no VM then why the loop runs once? I know that to achieve the above, there are easier methods, but for other reasons, I need to loop, it was just a test to prove what is for me a phenomenon.

  Any help appreciated.

  Thank you, Andy.

  Post edited by: avarcher

  I believe that this is because PowerShell by assigning a null value to $vm.  If you want to avoid going there you can test $vm - eq $Null before you begin the ForEach, or you can use $vm = @(Get-VM).

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  VMware communities user moderator

  Now available - vSphere Quick Start Guide

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• More specific anti-aliasing prevents multiple images rendering at the same time after awhile

  Hi all.

  I am experiencing inconsistent memory, behaviour management when rendering my AE project that prevents me from making several images at the same time when some elements of film use accurate antialiasing.

  I have a processor 8-core i7 MacBook Pro with 8 GB of RAM and I am using AE CS5.5. I visited a project with several Illustrator layers imported to keep things nice and crispy. Here is a 3D with one camera, DOF, composition and they are continuously rasterized. On some of the vector assets I have to set the antialiasing for "More precise" in the dialog box interpret footage to address some problems with image quality. Here's what I noticed when rendering:

  1. when anti-aliasing on all assets of Illustrator is set on "Faster" return it without issues composition.

  2. I change the setting of antialiasing on some assets of the Illustrator to "More specific" to improve the quality of the image. Made of several images at the same time is off. Composition makes for a while, but eventually I get an error: "after effects error: unable to allocate enough memory for file antialias (50:5).

  3. to work around the error I load AE to empty the memory cache all 5 images or less via the Secret menu in the preferences. This prevents the error from happening and I can see the RAM being deallocated when from time to time as expected. This allows me to return the quality I need, but it is slower.

  4. in order to expedite things I light made simultaneous multiple images. I use the conservative settings: AE is to use only two hearts with 3 GB of RAM by heart (the maximum allowed). The rendering is accelerated. However, I see that the system "in use" RAM continues to increase at each image made up until the computer runs out, how AE automatically turns off made simultaneous multiple images and begins to display one image at a time. This does not happen whe all vector assets are defined to use fast antialiasing one I can make indefinitely with simultaneous multiple images rendering, but I don't get this way the desired quality. Please note that there is enough RAM for the carrots for multiple images rendering, but it seems as if having made a frame, the system is not free or reuse the memory when assets use specific anti-aliasing and will use another piece until there is no more.

  Also, I'm outputing to a sequence of images.

  Please help me to find a workaround for this problem. Thank you!

  This is probably a software design limitation (or bug) in the underlying code of Illustrator and there is no work around for this. You might dutifully report it here, but it's as good as it gets, and even when you do, you shouldn't be pregnant it be fixed anytime soon. In 12 years of use AE, that kind of thing never worked 100% right...

  Mylenium

• Put the loop of variables in a single table with formatting (PHP)

  I have the following loop;

  <? PHP

  $i = 1;

  While ($i < = $num_rows)

  {

  $tempquantity = "extra". $i.' quantity ';

  $tempcomments = "extra". $i."comments";

  $tempname = "extra". $i.' name ';

  $tempprice = "extra". $i."price";

  $$tempquantity = $_POST ['extra'. $i. "quantity"];

  $$tempcomments = $_POST ['extra'. $i. "Comments"];

  $$tempname = $_POST ['extra'. $i. "name"];

  $$tempprice = $_POST ['extra'. $i. 'price'];

  Print "Extra name: $$tempname;

  Print "< br / > ';

  Print "Extra price:". "." $$tempprice;

  Print "< br / > ';

  Print "quantity:". "." $$tempquantity;

  Print "< br / > ';

  Print "reviews:". "." $$tempcomments;

  Print "< br / > < br / > ';

  $i++;

  }

  ? >

  Which, since there are 3 rows, outputs the following:

  Extra-Nom: dfvgfddf

  Extra price: 4

  Quantity required: 67

  Customer reviews: gtfh

  
  

  Extra-Nom: wewew

  Extra price: 34

  Required quantity: 45

  Customer feedback: thtrt

  
  

  Extra name: ewewe

  Extra price: 43

  Required quantity: 12

  Customer feedback: gdfgg

  I want to be able to do is to show the output above in a PHP email body variable which, according to me, this means that the loop variables must be in a single array variable as coding in a body of email variable is not allowed. How can I put a loop of variables like that in a single variable, and how to keep the < br / > tags and names before variables ("name Extra:' etc."), so it seems that it should in the PHP email body?

  Thanks in advance

  I also need to set the variables generated by the loop in a single database field

  Why?  Looks like a mistake to me.

  Anyway, why not change it.

  
  
  The name of the tenant: $rentername

  on this subject.

  
  
  " The tenant's name: $rentername.

  $i = 1;

  While ($i<>

  {

  $tempquantity = "extra". $i.' quantity ';

  $tempcomments = "extra". $i."comments";

  $tempname = "extra". $i.' name ';

  $tempprice = "extra". $i."price";

  $$tempquantity = $_POST ['extra'. $i. "quantity"];

  $$tempcomments = $_POST ['extra'. $i. "Comments"];

  $$tempname = $_POST ['extra'. $i. "name"];

  $$tempprice = $_POST ['extra'. $i. 'price'];

  $body. =<>

  Additional name: $$tempname
  

  Extra charge: $$tempprice
  

  Required amount: $$tempquantity
  

  Customer reviews: $$tempcomments
  
  

  EOT;

  $i++;

  }

  and then remove the loop where it occurs earlier.

• Using the loop will decrease performance

  Hello
  Using the loop with a query will decrease performance.
  
  for r_row in (select * from table) Loop
  end of loop.
  
  This is done within another loop for, more cases, it returns a single value.
  It will decrease the performance of the procedure.
  kindly advice...
  
  Kind regards
  Balu

  user575682 wrote:
  Using the loop with a query will decrease performance.

  for r_row in (select * from table) Loop
  end of loop.

  This is done within another loop for, more cases, it returns a single value.
  It will decrease the performance of the procedure.

  Perhaps better understand everything that makes this PL/SQL loop construction.

  PL/SQL is two languages. It's PL (logic programming code) like Pascal, C or Java. You can use a 2nd language in it called SQL. The PL engine will be able to recognize when the 2nd language is used. And it compiles all the things that are necessary for motor PL call the SQL engine, pass the data to the SQL engine and get back data, etc. (compare this with the complexity of the use of SQL in Pascal, C or Java language).

  So what's this loop? The PL engine recognizes the SQL SELECT statement. It creates an implicit cursor by calling the SQL engine to analyze (I hope a soft Parser), then run it.

  As part of the loop of the PL, the PL engine now calls the SQL engine to extract data (lines) of the cursor. With 10g and later, the engine of the PL is smart enough to use the implicit treatment in bulk.

  Before 10 g that he used to extract a line from the SQL engine, make the loop, the next line extraction, the loop, etc. In other words, if there is a 1000 lines to pick up, he'll call the SQL engine after 1000.

  With 10g and later he get a 100 lines, which store in a buffer internal and then make the loop once 100. With a 1000 lines to fetch, it requires 10 extractions in bulk instead of one 1000 rank of extractions.

  These extractions require a change of context - as the engine PL must not out back, and in the SQL engine to extract a line. It is an overhead projector and can become so slow the context switch nothing more.

  And it's the construction of bases for this loop (and most other cursor loops) in PL/SQL.

  The ideal is to reduce the number of context switches. It is an overload that can have an impact on performance.

  What about using a loop in a loop. As 'bad '. This example uses the outer loop to retrieve the data. These data are then used to excite the extraction in internal or nested loop. The outside loop draws data from the SQL engine in PL variables Inside loop drives that same data back to the SQL engine.

  Why? It would have been much faster not to pull and push data between the loops using PL.

  It will be much faster do so only through SQL. Write the two loops as a single SQL statement and have the SQL engine directly driving these loops itself. This is called a JOIN in SQL. And the SQL engine can do not only more quickly, but it has a few algorithms of multiplied can be used which are even faster than a nested loop process (called merge joins, hash joins, etc.).

  Bottom line. Optimize SQL. Reduce to a minimum the PL. *

  Do as much of your data, crunch in SQL as possible. SQL is the fastest 'place' and process the data. No PL (or C/Pascal/Java).

• Model in the loop timed While the elapsed time

  Hello NOR community,

  I'm trying to use a while loop timed to run controller simulated for a mechanical system test. I need the time loop to run at an even 50 Hz to simulate the controller that will eventually drive the mechanical system. To check the speed at which the loop runs, I made a VI that gets a value from each loop clock and subtracts the value of the clock of the current iteration of the value of the clock of the previous iteration. I have eliminated all other codes this VI except for the recovery of the clock, to ensure that no problem with another code in VI. I find that the time between iterations is not constant, but it is consistent. In other words, the elapsed time can change at each loop, but it changes according to a specific model, such that the average elapsed time is equal to the value that I use for the timed loop. The loop will run faster than posed for several cycles, then slow down during a cycle even at the same time. Here are some examples:

  Running at 5 Hz: elapsed switches schedules between 0.203125 and 0,187500 seconds

  Clocked at 8 Hz: time is constantly 0.125 seconds.

  Operating at 10 Hz: elapsed switches schedules between 0,109375 and 0,093750 seconds

  By examining the differences between elapsed time and the stability of the 8 Hz setting, it seems that there is a minimum time of 0,015625 seconds (64 Hz) division. It is much worse than the 1ms accuracy claimed in documentation. This could be the cause?

  I am running Windows XP with LabVIEW version 8.5.1 and have observed this behavior on several computers with different screws

  Thank you!

  Erik

  Your problem is the function that you use to get the current time.  It's just the time of the Windows clock which has a resolution of 16 msec.

  You must use the function of number of cycles as Jarle has pointed out.

• 14 Adobe photoshop elements requires registration at the start and then the process times out, say that there is no network connectivity

  When you try to start the program that a window pop up - registration required. The process of application certificate (implemented at least a dozen times). The process times out, say there is no network connectivity, which is a nonsense at least at my end. Same behavior applies for the first loose. I have the license keys for both products and they appear under my adobe account. However, because of the described behavior I can't use the products.

  Check your hosts file.

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• Maximum limit for the number of periods loops that can be run at the same time?

  I am developing a simulator that requires many pieces of code to execute in parallel.  As a result, we were in loops just for this purpose.  I didn't count but there are close to 100 call loops that eventually run at a given time.

  A week ago, I've reached a point where the Simulator was working fine but when I added a more timed loop, it would break LabVIEW.  When I say LabVIEW crashed, I want to say there is no warnings that popped up, and LabVIEW just stopped completely.  Worse still, LabVIEW didn't offer even to recover the work when I start it back up again.  However, removing an additional timed loop allows everyone to work normally again.

  I'm under LabVIEW 2009 Version 9.0f3 (32 bit).  I have observed this behavior even on two different systems, one that is 3.2 GHz Xeon Quad-core with 2.0 GB of RAM, running Windows XP SP3 (32 bit) and the other is a 3.0 GHz AMD Athlon 64 Dual Core with 4.0 GB of RAM, running Windows 7 Professional (64 bit).

  Because the two systems are quite different, and LabVIEW appears to hang at the same point, I wonder if someone has already noticed such behavior.  I searched online and can't seem to find any reference to such a limit on call loops.

  One last thing.  I made an attempt to replace all the loops timed with while loops, but this seems to lead to some kind of hunger because the Simulator becomes suddenly jerky, without seeming to consume all resources more than when the call loops were in place.  So, which doesn't seem to be an option.

  I think that you are limited to 128 Timed loops in a system. Could not find anything by specifying that online, I am sure that I heard him. Also, the Sources Software-Triggered clock Timing loops can only be counted between 0-127.

  However, it certainly sounds like a bug that LabVIEW would crash during the approach of this limit rather than up a significant error.

  You can do some things to help avoid the unstable behaviour of the normal use of many parallels while loops. Place one or more loops in subVIs and then distribute these subVIs enforcement systems . This will give you your application with multiple threads of execution, which will reduce the ground being. If you don't do this, your curls probably all run System Standard of performance, which, by default, cannot have 8 wires at his disposal to share between all the loops.

• FPGA: Vs timed loop Timer?

  Hello

  I would like to create a FPGA loop that runs at a fixed rate. Whatever if I use a timed loop structure or a timer loop express VI into a regular while loop? Under what circumstances should I choose one over the other?

  I understand that the timer loop approach can cause the code in the loop run twice before calendar is established (but this isn't a problem for me here). Are there other differences in the two approaches?

  Thanks in advance.

  JKSH wrote:

  But my question was about the differences between the use of "multi-cycle" Timed loops and VI express loop timer.

  In a targeted FPGA VI, all call loops are single cycle timed loops (SCTL).  This means that all the code in a SCTL must run in a clock cycle, so there are a few types of nodes cannot be used in such a loop.  In a used while loop with a timer, you can use a wider range of features, but the loop will generally run much more slowly.

  These documents may be useful to learn how to use loops clocked on FPGA:

  Using loops of Cycle time unique to optimize the FPGA VIs

  Optimization of your screws of LabVIEW FPGA: running in parallel and Pipelining

• Minimum time to wait in the loop of reading series

  Hello

  I would like to ask if it is possible to read data from a serial port loop each 17ms? If so, how to read Serial and it management loop set.

  I'm the Arduino Uno card reading that can run on up to 115200 baud rate of kbs. Arduino sends each integral 17ms (0-3). Now, I can't read them separately (each part one by one, I get numers as 123, 231, 12, instead of 1, 2, 3 etc.), but this may be due to other stuff I do in the loop. I elaborate more on my VI later - now I would like to know if it is possible using LV 2011 + VISA read serial number of each 17ms. What bothers me the most is that I saw many times on this forum that people suggest of don't not to go below 10ms timeout in the Serial reading loop (same base series Read and Write provided in examples of or). If ms waiting loop of x, where x is 17ms divider?

  You hear that you read whole and not full? Send you one byte or more? If it is a single byte, then just define it as the number of read. Do not put in any function wait and do not use the VISA to the Serial Port bytes. Playback VISA will be automatically terminated when one reads a single byte. You send a terminator after the number? Waiting in the example has nothing to do with a constant data stream reading and with a terminator is completely useless.

• is this a correct way to write data every time the loop is executed?

  I created a VI, and my goal is to save data every time the loop is executed. So far, I only learned to write binary file... I wish I could write numeric value directly...

  The only problem is that I am not if my method is correct, because I'm afraid that each time that the loop is executed, the previous binary data will be replaced... I don't want that occur.

  Do you think that my logic is appropriate in what concerns the registration data?

  Thank you!

  Your logic is fine. You replace data because the file pointer will be that your data is written. If your program stops, and then you restart, and you want the data to add to the file, you can use the file value position VI and the pointer value 0 bytes of the end. set this position once, after you open the file (so out of the loop) and then data will be added.

  If what you mean by "write a number directly," is to write something in a human newsfeeds format, you can use writing to text file instead of writing to a binary file. Then, use the VI format string or fractional number string VI to convert your double into a string and write it.

• RandomGen elements, case structure nothing if it's false, while the loop passes iterations, can not get the values in table outside the structure of the case

  Hello!

  I tried to build a trigger that triggers a true value each 1000 milliseconds (from the first real);

  which real command structure box to a value of the randomNrGen of the sample and place it in a table.

  but I would like to USE this table and I can't do this beacause I can not get out of the structure of the case.

  AND:

  the while loop ignores samples; If you run the vi and look at the speed at which the table fills, ypu notice it is not periodic: the first few items are inserted at 1 second interval, but then it jumps one;

  would it be because of the wait time 1ms?

  1. How can I create a structure that does this:

  If set to True, it samples a value from Genesis at random and places it in the table

  OTHERWISE, it does NOTHING, without zeros sent to the table just waiting for the next true and only the values sampled at True remain in the table?

  2. How can I stop it pop samples (multiples of 1000 in my case)?

  In conclusion: I need to be able to take samples on the sample generator and store them in an array of 3d in a zig - zag (1.jpg) way, but able to think about it, we need to go beyond these two questions.

  Please ignore the meter.

  Please help me!

  TibiG wrote:

  Thanks, Crossrulz!

  This did not omit all values and it works fine.

  Is it possible to get information in a case without making use of the large loop?

  My program will become very complex (I need to synchronize a magnetometer and a stepper motor to make a 3d map of the magnetic field of the magnet) and I want to do everything as simple as possible.

  If there is a way to get information about a case structure, other tnan using registers with shift on the big loop, and you know it, please show me.

  Thank you!

  You could also use a Feedback node, just keep it out of the structure of the case.

• Why the execution time increases with a while loop, but not with "run continuously?

  Hi all

  I have a problem of severe weather that I don't know how to fix it because I don't know exactly where it comes from.

  I order two RF switches via a data acquisition card (NI USB-6008). One job at the same time can be selected on each switch. Basically, the VI created for this feature (by a colleague) resets all the outputs of acquisition data and active then those desired. It has three entrances, two chain simp0le controls and a cluster table, that contains the list of all the outputs and some practical information to know what is connected (specific to my application).

  I use this VI in a complex application, and I have some problems with the execution time, which increased whenever I said the VI, so I did a test VI (TimeTesting.vi) to determine where the problem came. In this special VI I record the execution time in a csv file to analyze then with excel.

  After several tries, I found that if I run this criterion VI with the while loop, execution on every cycle time increases, but if I remove the while loop and use the funtionnality "Continuous run", the execution time remains the same. In my high level application, I have while loops and events, and so the runtime increases too.

  I someone could explain to me why execution time increases and how can we avoid this? I have attached my VI test and the necessary subVIs, as well as an image of a graph that shows the execution time with a while loop and «run permanently»

  Thanks a lot for your help!

  Your SetReset_DO VI creates a channel whenever it is called.  And that you never delete a task.

  When running continuously, that it's as if it only runs once and LabVIEW has internal mechanisms to close references that will not be used again.  When a VI is used as a Subvi, LV does not know if she will be called again, and lacks these things until the first level VI stops. You have a memory leak.

  Just as you open and close your file outside the loop for, create your channel out of the loop.

  Lynn