Build table retaining memory between executions

Hey everybody,

I'm relatively new to LabVIEW and try to design an executable to read the measurements of a digital multimeter that takes measures and integrate them into a table which then transfers to an Excel document.

I received the DMM upward and running, I have got to write to the file, but if I run several times he tries to build the file using past performance and the results of the current test.

How can I empty the system memory so that it starts fresh every time?

Right now I use a loop which refreshes the numerical measures and use buildarrays to compile all of the results (shift registers to sell berries). At the end of the code (stop button) they transfer to be compiled into tables.

Hi anthony,.

I have attached the VI the problem of shift register.  When you run that a vi with SHIFT registers him registry will remain in memory until you close.  Then, when you run your first iteration, it will start by default, then stop.  When you restart it without closing the register shift will keep the values from the previous run.  As long as the temperature outside the loop so you reset the registry of each race.

Tags: NI Software

Similar Questions

  • Build tables then again

    Hi all

    I know that you are reading these words a lot here, sorry, I'm new to labview and I want someone to help me in vi that I'll explain now.

    I have a while loop with a variable inside (local variable or a random variable in this example), the loop has timeout of 1000 ms, so each one second there is a new value.

    After a time, I want to record what the output variable into an array and then summarize all these values and then display.

    I trigger the recording process manually by using a Boolean trigger, so, no need for a timer or something, I have you just press a button then values begin at accomulate in the table and then when I release the button, I want these values to summarize and display, then I have another RESET Boolean, I press reset the values of the transom zeros in order to press the key once more again later in and then the process is repeated again.

    I did the vi in the way I write now that I can start only the vi so the values accomulate and then when I press the Boolean value affects the loop stops and then the table is summed up and display.

    the problem is that I can not reset the values or repeat once again because when I press the Boolean value, stop the loop and I cannot start over once again.

    I'll be very grateful if someone helped me with that.

    Thanks in advance

    Concerning

    Shady

    Hey shady,

    It is always advisable to use the registry to offset for building tables. Using a while loop within a Structure of matter is not a good programming practice. Check out the attached VI. This should help you.

    Best regards,
    NitZ

    (Bravo to give good answers, mark it as a Solution If your problem is resolved)

  • The FG table storage: memory errors

    Hello everyone, this is my first post here, I hope it's in the right place :-)

    I was making mistakes of memory.  I am running LV 32-bit on a system with 24 GB of memory. I understand that LV may use only 2 GB of memory, even if I used the utility followed memory to trace a problem at one of my Subvi, in which I use a functional global to store arrays of data.

    My LV program periodically takes in an array of new data.  Whenever a new data table is received, I divided into its constituent parts and store these components in another series of paintings.  I use the USR to store the functional arrays as globals, since I heard that this tactic will improve performance.  However, using the utility followed memory, I find that the Subvi takes much more memory than indicated the amount of data stored.  So, I guess the Subvi has made multiple copies of data than expected.

    Could you please take a look at this VI someone and tell me what "rule" I am breaking what problems?  It is not too big, I think we should that the eyes of an expert.  I'm still a little new to LV :-)

    Thank you!

    Brian

    How much data are you trying to store in this functional overall?  How often is it updated, and how many times it is called between resets?  If you know the maximum size of the data you need to store, it may be better to have the case reset allocate arrays of this size (instead of empty tables) and then maintain an index indicating both the current size of the table and the position to insert the next piece of data.  It will be more effective than to build the table.

    Now, even if you have enough memory to store all the data, it can be too fragmented to be usable.  Whenever you use array of generation in the loop, LabVIEW will allocate a new array of the current size of + 1 and then copy data to it, after which it can make memory of the former small table available again.  The next time the loop for this once again, setting up small blocks of memory available which may not be contiguous and are too small for reuse when the berries then need to grow.  Pre-allocating berries to the maximum size and then replace the items one at a time (as new data arrives) will solve this problem.  In addition, it will be faster, because it takes less time to replace one does it to copy all of a table to a new location.

    In addition, there is no need of the loop for use replace table subset.  Delete the register shift and let the autoindexing to build the output array.  You actually produce an extra copy useless trying to reuse the table, instead of save memory (because there is a copy in the shift register and the other being used for autoindexing).  For loops are effective for the construction of the tables because their maximum size is known before the loop begins.  In addition, the table to initialize is unnecessary - you are initializing the values that will be immediately be replaced - and you don't even have the function of the size of the array.  I'd do it as shown below:

  • Load a dynamic VI and keep in memory after execution

    Hi guys,.

    I use a strange setting that I have to follow a set of rules.

    My problem is the following:

    I have a main VI (which is compiled into an EXE file) that dynamically loads and executes a Subvi (the Subvi is not compiled into the EXE file). Calls Subvi has overall functional which is called only by dynamic screws, where the global is not a dependency of handmade VI and it is not compiled into the EXE file either. As you can see already, when I call my Subvi dynamic for the first time (for example it behaves like a SET function), it will define the functional global; then, when the dynamic Subvi execution stops, it releases the global functional VI. So if I call another sub - VI dynamic as a function of READING, he will not retain the information specified by SET Subvi.

    I'm not allowed to do the subVIs or global one functional dependence of handmade VI and it can not be compiled into the EXE file, so what I have to do is load the Subvi Dynamics somehow and either keep in memory even when the execution ends, or keep the functional global in memory after the first call.

    Anyone know how I would be able to do this?

    Help is appreciated,

    Drazen

    Drazen,

    When ' a VI dynamic calls functional overall for the first time, launch an another dynamic VI (Holder.vi) who has the functional overall as a Subvi.  Holder.VI does nothing except wait until the hand VI is called dynamic screws as long as Holder.vi is in memory, it will also keep the functional global in memory.

    I have not tried this, but think that it will work.  It of a little awkward, but must have a minimum size and impact on CPU resources.

    Lynn

  • Build table 2D-the only condition of case string

    Hello

    I'm having a problem when I am trying to build a 2D of the elements of the string table. Here's basically what I'm doing:

    I'm loading the tables in different text files (Session_001.txt, Session_002.txt, etc.) and concatenate into 1 big table.

    On each line of text Session files, there is the session number, various characteristics of hockey sticks, and then a couple results.

    I want to be able to select the various features and then display the corresponding results. Currently, I'm working on the selection of the Session, and when I get this working, the rest would be similar (I guess).

    The problem I have is that when I select the sessions that I want, the Array3 resulting (with all data) is filled with empty lines (table 1 d of the empty elements). I had the same problem when display a table 1 d (table 2) coming to show what Sessions had been selected, but I managed to fix that by searching for and deleting empty elements.

    The problem lies within the structure of matter I. I compare all the elements in the first column of my huge 2D array with each number of the selected Session, and when it is 'true', that I keep the current line to go to table 3. If it is "false", nothing should happen (I have a registry change through my case 'false', but a line of empty strings is added to the table.

    What Miss me?

    I know this probably sounds very confusing, so I join you the only VI and a zip containing the VI and my text files.

    Thank you!

    Off topic (Finally, still on the topic of my VI), it will be possible to assign a different color for each type of stick (MX3, APX3) or the different type of marker for different types of shots (WS, SS), etc., when I want to display the results on the same graph? If not, stop now and I'm going to Matlab.

    Oh my... Equal to true. I'm so ashamed.

    I just started Labview on my internship 2 weeks ago. There are probably several simplifications I can do for my screws, but as long as they work and do not burn my laptop, I agree.

    With respect to the conditional tunnel, I n, t really know to use it yet, but I found the problem with my registry to offset. I created a 2D array empty outside the two loops and added a registry to offset. I then build I tried to rely on another thread.

    Resolved VI is attached to anyone who cares

  • Boolean Build table

    I am struggling to determine why the value of the only Boolean value below isn't concatinated to the arrary annexed table build?

    I understand that it isn't an arrary but a shift register value. But surely I can use this value T/F and added it to the array version some how.  Please advise I think I'm going crazy: manembarrassed:

    You always have a point of stress on Indicator0001.  As you now convert a U8 in an array of Boolean, but indicator 0001 shows only 4 elements.  It is safe for me to think that your meter is somehow an array of fixed size?

    I would avoid using a fixed table data type.  If you want to only 4 items in table 8 original item, then use Array subset to get only the items you want.  Then all your calculations later works and is displayed correctly.

  • Build table

    Hi guys

    Need some help here

    My goal is more

    1. create a table based on the values programitlitly beeing past in the table

    2. This should each time when a Boolean value is true.

    3. the table building function should wait 6 s when the value is true before you store them in the array

    My problem is that when I press on True and begin to change the value to the value desired before past 6 seconds, the value passed to the table after 6 seconds is the starting value before I changed to the desired value betwwen 1 to 6 seconds.

    It drives me crazy

    And the desired value must come within a structure of sequense

    The attached value se

    Put the digital terminal in the second image in the sequence. In this way he'll only get read after 6 seconds.

  • Build table - you have connected two terminals of different types

    Hello, I'm getting my vibration sensor data using my USB 9171 cdaq and the NI 9234. I want to display the signal of vibration, to record in a file, to do all kinds of possible statistics and the display of the statistics table on the front in update mode, attached is my VI based on some examples in the finder of the example, it has an error, can someone help me to make it work. Thank you very much in advance for your collaboration. Ihab

    Change the table build to add entries instead of concatenate.

    Lynn

  • Why "arrow red triangle" show in build table function?

    refer to title, when you use the function 'building the table' why it displays "arrow red triangle" in the port of entry, you can see two photo below, why this difference occurs?

    any response is high appreciated!

      

    I got the reason: even the label of controls must be identical.

  • Table of index between the limits

    Hi all

    I have a byte array that I need to extract information.

    I need to extract 60 cells in the table, so using the index function to form a table under is not pretty (wiring in 60 constants). Is there another way to do this? i.e. to inex between limits?

    Thank you

    Richard.

    You can use a subset of the table, where you need feed the starting index and length you need

  • Variables between executions of compensation

    Hello

    I'm pretty new to LABVIEW.

    When I run the VI several times it sometimes clears the output fields (for example, a table or a string) and sometimes prevents the results of previous races.

    How can I clear the variables between tracks?

    Thanks in advance

    Yuri

    iurik wrote:

    Hello

    I'm pretty new to LABVIEW.

    When I run the VI several times it sometimes clears the output fields (for example, a table or a string) and sometimes prevents the results of previous races.

    How can I clear the variables between tracks?

    Thanks in advance

    Yuri

    Several ways

    1. you can initialize values before each session

    2. you can use Reset all to default (Invoke node)

    Clear understanding of its best to share the code for

  • Revo Build mother Compaitibilty memory card

    The motherboard of the Revo Build (M1-601) requires DDR3L or is it compatible DDR3 back?

    Acer memory for this model specification is DDR3L.  The specification of memory Intel supported CPU for this model is DDR3L.  Therefore, you should use DDR3L only.

    DDR3L 1600 MHz SODIMM

  • Build a private network between two physical hosts in ESXi 4.0 for VM guests

    Hi all

    I am a newbie in the use of VMWare ESXi for my company testings and I have a question on networks

    in ESXi. In fact, I always do my tests in my VMware Workstation, and it's pretty easy to build a virtual

    private network between two guests of computer virtual and it needed to do more real testings on ESXi environment.

    But now I have two Dell servers mounted and with two ESXi 4.1 installed on these servers.

    Each server has two network cards connected to the same network switch.

    In this essay, I have to install a RAC Oracle 11 g as guests of virtual computer on two separate server Dell for

    two RAC nodes.

    The installation Guide for the PAP, I need to build a network between two nodes.

    My superficial knowledge network, the private network address is not the same as

    the public network address, in this case, the IP address provided by the network switch is

    10.1.10.X and it should be public network address.

    In this case, how can I do the private network of ESXi settings?

    I do the settings of the network switch? I'm not the guy of networking and really

    want your expertise in this area.

    If you have an idea or experience to share, please kindly help.

    Thank you very much

    Ray

    SonyRaymond wrote:

    Then private network can be established between NIC (N1) and NIC (N2) with address 192.168.1.X

    range?

    Yes, that's correct. It would have made you have a private network layer 3 between the two guests in the 192.168.1.x address range.

    In general, you also want to isolate a layer 2 (ethernet) with the VLANS on the physical switch, but if this is not possible at this time then it could be implemented now and you could later add VLAN in the switch.

    It is also the reason why I think you should create a new portgroup on the same vSwitch as other existing exchanges. If you later configure VLAN to the physical switch, it will be very easy to activate this on the "private" portgroup

  • building tables and compare content

    Hi team,

    build a flash drag and drop activity with a button of control responses, having trouble getting tables to compare... Here is my code (below)

    Why my work table uanswer properly used and when I compare the tables how can I make them "match" or == if they have the same content in different order? Is how important it?

    Also can I get a number reutrned on the number of items matching there even if they do not completely match?

    See you soon

    void

    ans1.ans1text.text = "beans";

    ans2.ans1text.text = "Chicken";

    ans3.ans1text.text = "Rice";

    ans4.ans1text.text = "Rocks";

    ans5.ans1text.text = "Dirt";

    incorrect var: number = 0;

    var right: number = 0;

    trace (getRect (destination1));

    var rightanswers:Array = ["years1, years2, years3"];

    for (var i: int = 0; i < rightanswers.length; i ++)

    {

    var response: String = rightanswers [i];

    }

    var useranswers:Array;

    for (var j: int = 0; j < useranswers.length; j ++)

    {

    var uanswer:String = useranswers [j]

    }

    This.ans1.addEventListener (MouseEvent.MOUSE_DOWN, pickMe1);

    This.ans1.addEventListener (MouseEvent.MOUSE_UP, dropMe1);

    function pickMe1(event:MouseEvent):void {}

    event.target.startDrag ();

    }

    function dropMe1(event:MouseEvent):void {}

    event.target.stopDrag ();

    var myTargetName:String = "years1" + event.target.name;

    If ((event.target.hitTestObject (destination1) == true)) {}

    useranswers.push ("years1");

    trace (useranswers);

    } else {}

    var ians1:Number = useranswers.indexOf ("years1");

    trace (ians1);

    useranswers.splice(ians1,1);

    trace (useranswers);

    }

    }

    This.ans1.buttonMode = true;

    This.ans2.addEventListener (MouseEvent.MOUSE_DOWN, pickMe2);

    This.ans2.addEventListener (MouseEvent.MOUSE_UP, dropMe2);

    function pickMe2(event:MouseEvent):void {}

    event.target.startDrag ();

    }

    function dropMe2(event:MouseEvent):void {}

    event.target.stopDrag ();

    var myTargetName:String = "years2" + event.target.name;

    If ((event.target.hitTestObject (destination1) == true)) {}

    useranswers.push ("years2");

    trace (useranswers);

    } else {}

    var ians2:Number = useranswers.indexOf ("years2");

    trace (ians2);

    useranswers.splice(ians2,1);

    trace (useranswers);

    }

    }

    This.ans2.buttonMode = true;

    This.ans3.addEventListener (MouseEvent.MOUSE_DOWN, pickMe3);

    This.ans3.addEventListener (MouseEvent.MOUSE_UP, dropMe3);

    function pickMe3(event:MouseEvent):void {}

    event.target.startDrag ();

    }

    function dropMe3(event:MouseEvent):void {}

    event.target.stopDrag ();

    var myTargetName:String = "years3" + event.target.name;

    If ((event.target.hitTestObject (destination1) == true)) {}

    useranswers.push ("years3");

    trace (useranswers);

    } else {}

    var ians3:Number = useranswers.indexOf ("years3");

    trace (ians3);

    useranswers.splice(ians3,1);

    trace (useranswers);

    }

    }

    This.ans3.buttonMode = true;

    checker.addEventListener (MouseEvent.CLICK, checker1);

    function checker1(event:MouseEvent) {}

    trace (response);

    trace (uanswer);

    That's where I want to get my two tables to compare, but my table of uanswer does not work

    }

    function matchesF(a1:Array,a2:Array):int {}

    var n: int = 0;

    If (a1.length<>

    var has:Array=a1.slice();

    var:Array=a2.slice() b;

    } else {}

    a = a2. Slice();

    b = a1. Slice();

    for (var i: int = 0; i<>

    {if (b.IndexOf (a [i]) >-1)}

    n ++ ;

    }

    }

    return n;

    }

  • table behavior difference between php and flex?

    I think that this problem is probably caused by a difference in behavior of the table between php and flex I am not quite striking.  It's the flex code that I wrote and the php code is shown below.  I'm new to flex and this really left me speechless.    Thanks a lot for your help.

    The entries are father = [SB1, kit] dam [kit, kit] = sireLinkedP = E (P) and [e F]

    Output should be (and is with PHP) random = [E, P, SB1], [E, P, kit], [e, P, SB1], [e kit, P],

    What I get is random = [E, P, SB1, kit], [E, P, SB1, kit], [e, P, SB1, kit], [e, P, SB1, kit]

    function randomlinks(sire:Array,dam:Array,sireLinkedP:Array):Array {}

    var str:String [0] sire = .toUpperCase ();

    var str1:String sire [1] = .toUpperCase ();

    var str2:String dam [0] = .toUpperCase ();

    var str3:String dam [1] = .toUpperCase ();

    var x: uint = sireLinkedP.length;

    var k: uint = 0;

    var random: Array = new Array();

    x--;

    trace ("randomlinks sirelinked:" + sireLinkedP);

    for (var i: uint = 0; i < = x; i ++) {}

    for (var j: uint = 0; j < = 1; j ++) {}

    random [k] = sireLinkedP [i];

    trace ("random" + k + ":" + random [k]);

    If (str == [0] sire | str1 == sire [1] | str2 == dam [0] | str3 == dam [1]) {}

    random [k] .push (sire [j]);

         }//end if

    trace ("random" + k + ":" + random [k]);

         k++;

    } //end for loop

    } //end for loop

    trace ("randomlinks:" + random);

    return (random);

    { } //end randomlinks function

    function randomlinks ($sire, $dam, $sirelinked) {}

    $x = count ($sirelinked);

    $x--;

    $k = 0;

    for ($i = 0; $i < = $x; $i ++) {}

    for ($j = 0; $j < = 1; $j ++) {}

    $random [$k] = $sirelinked [$i];

    if (ctype_upper($sire[0]) | ctype_upper($sire[1]) | ctype_upper($dam[0]) | ctype_upper($dam[1])) {}

    array_push($random[$k],$sire[$j]) ;}

    $k++;

    }

    }

    Return ($Random);

    }

    You are right to make a copy. In Flex, the tables are references, if this assignment: random [k] = sireLinkedP [i] affects [k] random real behind sireLinkedP [i] matrix instead of a copy. Who is?

    -Kevin

Maybe you are looking for

  • Hit left click and get search screen every time. Can anyone help

    I have a compac presario. Using Windows XP. When I left click something instead of being able to go into what Im clicking on it brings to the top of my search screen. Does anyone know how to solve this problem. I thank.

  • Microsoft Lottery notification

    I receive mail little of "* address email is removed from the privacy * (* address email is removed from the privacy *) which means that?" Notification of lottery UK Mocrosoft Jackpot This is to inform you that you have won a prize money ofEight hund

  • Failed application spoolsv.exe, failed module MSVCR80.dll,

    In fact I have a 32-bit windows server 2008 with HP, epson, xerox, datamax printers, I use the XEROX GPD PCL v.2.1. PC HP of IMPRESSION UNIVERSAL v. 5.5.0 IBM PROPRINTER XL III ZDESIGNER z4 M 300 dpi I had no problem to install and configure printers

  • Using regular expressions to store the first 3 letters of a string

    Can anyone help with regular expressions?The problem:I have a contact field which is holder of a value of campaign here is an example of how we look at:EMC | TEACHER | HRSUB | June2012-may-01I need to store the first three letters of the code in anot

  • some group functions

    Hi all, I have some data here want to get a desired output like below. I don't know how I could rollup charge_id sales/GST on the same line, respectively. WITH T AS ( SELECT 'SALES' AS TYPE,    41.7  AS AMOUNT,      51343382 AS CHARGE_ID FROM DUAL UN