Structure of the problem of the worksheet

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• Problem reading the worksheet after you use a DLL to write on the worksheet

  Hello

  I have a few problems reading a sheet DLL created in LabVIEW. The DLL is written in C++.

  I'll dexcribe what do the VI in the screenshots:

  For DLL_INIT = the first false steps the VI (LabVIEW) values and exports in a DLL initialization.
  DLL takes these values and not some und calculation, then wrote the measured values and the new calculated values in a csv file called 'filtered_values' and a file 'filtered_values_complete '.
  so, I have two files like this after initialization:

  1.0000000000; 1.0000000000; 18.8991610737; -3.2940000000; 0.0060000000; 0.9000000000; 6.5806287097; -3.2940000000; 1.0000000000; 0.0000000000; 1.0000000000; 0.0000000000;

  So now on DLL_INIT = true.
  For the calculation, the next step i read the "filtered_values" - file (LabVIEW), calculate the new values and write in filtered_values (DLL)
  And in the "filtered_values_complete" - file I will allways read the DLL entry first, so that I can check later, if the DLL has obtained the values to the right of the front step and then add the calculated values.

  For i > 0 initialization has been made:
  -the VI bed sheet "filtered_values" calculation and rotted the table 1 d in its unique values
  -The last seven values in the worksheet have been exported in the dll as well as five new measured values.
  -This DLL is still a few calculation
  - then it replaces the "filtered_values" - file and adds a new line to the 'filtered_values_complete '.

  This migth be a bit of confusion, so a small example, afer five steps it loooks like this:

  filtered_values:
  5.0625000000; 1.0000000000; 18.9300200447; -3.2870000000; 9.7320000000; 0.8997597592; 5.9159054233; -2.6533532901; 1.0000000400; 0.0000000000; 0.8078703403; 0.0000000000;

  filtered_values_complete:
  1.0000000000; 1.0000000000; 18.8991610737; -3.2940000000; 0.0060000000; 0.9000000000; 6.5806287097; -3.2940000000; 1.0000000000; 0.0000000000; 1.0000000000; 0.0000000000;
   
  2.0625000000; 1.0000000000; 18.8330081064; -3.2940000000; 9.7270000000; 0.9000000000; 6.5806287097; -3.2940000000; 1.0000000000; 0.0000000000; 1.0000000000; 0.0000000000;
  2.0625000000; 1.0000000000; 18.8330081064; -3.2940000000; 9.7270000000; 0.8999399568; 6.4077416273; -3.1451829134; 1.0000000100; 0.0000000000; 0.9480589053; 0.0000000000;
   
  3.0625000000; 1.0000000000; 18.7932988441; -3.2870000000; 9.7280000000; 0.8999399568; 6.4077416273; -3.1451829134; 1.0000000100; 0.0000000000; 0.9480589053; 0.0000000000;
  3.0625000000; 1.0000000000; 18.7932988441; -3.2870000000; 9.7280000000; 0.8998799074; 6.2394046705; -2.9768465052; 1.0000000200; 0.0000000000; 0.8988158138; 0.0000000000;
   
  4.0625000000; 1.0000000000; 19.0445703499; -3.2870000000; 9.7320000000; 0.8998799074; 6.2394046705; -2.9768465052; 1.0000000200; 0.0000000000; 0.8988158138; 0.0000000000;
  4.0625000000; 1.0000000000; 19.0445703499; -3.2870000000; 9.7320000000; 0.8998198333; 6.0754981785; -2.8129479844; 1.0000000300; 0.0000000000; 0.8521305805; 0.0000000000;

  5.0625000000; 1.0000000000; 18.9300200447; -3.2870000000; 9.7320000000; 0.8998198333; 6.0754981785; -2.8129479844; 1.0000000300; 0.0000000000; 0.8521305805; 0.0000000000;
  5.0625000000; 1.0000000000; 18.9300200447; -3.2870000000; 9.7320000000; 0.8997597592; 5.9159054233; -2.6533532901; 1.0000000400; 0.0000000000; 0.8078703403; 0.0000000000;

  So it's good enough that the VI and it works fine until some point when the just VI reads more calculation and x = sheet! There? becomes true.

  Most of the time it happens when the csv file is about 1200 lines

  Someone knows why this happens?

  Best regards

  Stefan

  Hello

  understood, that the error occurs somewhere completely else. the thread may be closed

  BR

  Stefan

• Write on the worksheet while loop problem

  Hello dear Labviewers. I have a 'writing on spreadsheet"with a table 2D DBL connected on it, but the problem occurs inside the while loop. I want exactly those time six values in my excel document, but it restarts after every "two seconds" and I cannot get rid of this problem. I want exactly the same numbers in the Excel document as it is in the table.

  I tried to move the two "write to the spreadsheet' boxes outside the while loop, but the Excel document does not display a single value in the table, when I do this. It shows that the two headers

  My second problem is rounded off on the numbers. Even if I wrote "%.6f" in the part of the format, it gives me a single decimal value.

  Thanks in advance

  Orlando

  

  Orlando says:

  Thanks for the help Ravensfan

  But the "worksheet to write" not a not an output port, then how can I do this?

  I downloaded my VI

  I never said anything about writing about a spreadsheet file with an output port.

  See the attached VI for changes.  It's only the new data of this iteration of the loop that will write it on the spreadsheet file VI, not made all of the table from all iterations.  There is an entry of table 1 d to the spreadsheet file.

• Structure of the event: problem with data transfer

  Hello everyone,

  for three days I'm troubleshooting an issue in LabView with the event structures. I really hope someone can help here, because I can't find anything on the entire WEB.

  I had six groups of equal to a VI entry, each containing five checks enum (among others) where the user can specify some configuration of measurement data. I want the program to do is: to recognize if a any of these enum values has been changed and if yes, then submit the values containing the cluster in a subvi then calculates the wiring and affect the material of the ports. In addition, i need to submit the number of the enum element that was changed, so the program is able to clear the user input in the case of a breach (e.g. If the user sets two entries of enum control 1 meter and 2 Group 1 and then tries to set a third counter of entry to port 3, the program displays a message and deletes third entry as the number of entries of counter is limited to 2 per cluster).

  To resolve this problem, I used a structure of the event with 6 x 5 cases (change of enum value 1 Group 1 Group 1 enum value 2 change... and so on until the change in the value enum 5 Group 6).

  

  The problem is that if the user changes a value, the event structure reacts and performs the proper case; However VALUES of the cluster, the user changed are not subject to the SECOND time that an event occurs. It is a kind of a situation, "n-1". For example, if all five controls Enum of Group 1 are 'disabled' first and the user sets enum 3 of 'Meter entry', the structure of the event runs but submits the values previous to the Subvi (all enums 'Disabled'). When the user makes the second change, say that enum SWITCH1 to "Analog Input", the structure of the event is running again and passes the values of the FIRST user to the Subvi editing, then the Subvi gets data "enum 3 meter inlet and all other disabled enumerations.

  In easier words: if I have new values on my cluster "Kanal 1" (left side of the screenshot) and run the structure of the event, on the right side to "Kanal 1" indicator, I get the previous values (n-1).

  The structure of my event is in a while loop. If I create a timeout every 10 ms, and a loop of 250 ms the waiting time, I got the 80% chance that the recent changes are transferred to the Subvi correctly, in other cases I have a delay of the 1 step as described above. It seems to be directly based on the time that I specify the while to wait - but I can't explain it and I cannot accept a less than 100% chance to transfer the correct data, nor can I accept delays of a few seconds for each loop run. If I indicate timeout (infinite) get delayed 1-1 step values in all cases.

  When I specify cases of event to react on "all items value change" of the structure of the event behaves properly - but then I can't handle indicate which element has changed, as the CtlRef of output in case of a structure does not specify "enum 1, enum 2..." but only "Group 1".

  Does anyone have a solution to this? It is certainly a problem with the structure of the event, but I can't understand what to change.

  Thank you much in advance,

  Mr. Boiger

  This is because the terminal is read until the structure of the event runs.   Terminal is read, the event structure is waiting for an event.  The change in value.  Business events are running, but the value is the old value.

  Put the terminal inside the event.

  Or, you can display the connector called "New value" on the side left (stretching down from the border of the node 'CtrRef').  Use a wire one to come.

• problem in the structure of the event

  I use a structure of the event and have a problem. I use an event where the event is enter button of the mouse to the top. I have a Boolean where the timeout. I need this value when true to disable the mouse button to enter (the key enter will make nothing more) upward because if I press the button enter the entire vi is ruined

  It should work.

• problems with timing in a time loop in a structure of the event

  Hello

  I'm using labview to control three motors stepper, running the three stages of different translation in different axes (X, Y and Z). Please see the attached VI, focusing on the structure of the event on the RIGHT side.

  In the Z axis, I am trying to run the engine for 5 seconds, after clicking on a button. I have attampted to do by adding a sub of elapsed time VI within a while loop, located in the tab 'Mouse before Z down' the structure of the event. A similar "elapsed time while loop" is also included in tab 'Z reverse the mouse down' the structure of the event.

  Separately these "elapsed time loops" work very well, BUT when I run a Z direction after another, say 'Z Reverse' and then 'Before Z' then they annoyingly interact. The calendar is gone, with the moment where we add, rather than rebooting.

  No idea how I can reset the time elapsed while loops? Or is there another method better do?

  Thank you very much

  Charlie

  charlieryan wrote:

  I take a wire from the 'i' of the while loop at the entrance of the Sub autoreset - VI of tiem will blink?

  No, connect you to the "reset", not "autoreset".

  

• problem with VI execution to the use of the structure of the event

  I close with this sub - VI, but it reacts as expected. My logic was 1 tables initialized with sequence, then the structure of the event in many different cases. The goal is to read a 2D .cal file 1 2 tables. Cells can be modified manually by typing in the text box, then clicking on the load button. Slider determines with cell in the index. Certain sequences of events work either

  (1) download the cal file

  (2) move the cursor

  Type 3) x input box

  (4) load x value

  Other sequences of events are the VI does not, i.e.

  (1) type x entry box

  (2) load x value

  Can some kind soul tell me the error of my ways?

  Walt Donovan

  First glance only:

  You need to connect the tables 1 d in any event, other that they clear.

• Problem with several sub-groups through case structure Enum: 'the VI isn't in a State compatible with this operation.

  Hello

  I'm using LabVIEW 8.0 and I'm trying to create a subgroup of experts which shows the façade of a subvi according to the choice made by the user via the menu drop down Enum.  I wired the Enum to a case structure and apply a coding identical to each structure of individual cases with the exception of course change the source of sub - vi.  However, you receive an error "The VI isn't in a State compatible with this operation."  I have managed to make a single sub - vi work within a subgroup of experts using a true/false case structure and the same exact coding.  However, now that I use an Enum box connected to a structure of the case, I get this error.  I enclose my diagram as well.  Could someone help me as to where it is that I am wrong?

  Thanks in advance!

  If your VI runs already, when you try to run it? Which returns the error you get.

  Check the State of VI before trying to run or make an error handling.

• major error with the structure of the event

  IM under LABVIEW 13.0 PRO

  I don't know when this strarted bug happening, but now when I add a business to a structure of the event. Freezes in LabVIEW. I have to close labview with the Task Manager.

  It doesn't matter what code I'm working with, even a new VI, with nothing else than a structure of the event.

  I tried this on my desktop PC, my laptop and my CPU DAQ.

  The error occurs on my desktop and my laptop. But it does not occur on my CPU DAQ.

  Whenever I click on add event usually case, you get a popup to configure and add cases, but with the popup error never comes to the top and labview crashes.

  Theres no code to share the problem ocured when adding events to the event structure. It happened with any structure of the event, in any code, all the time.

  I spoke to an engineer of apllication of labview and suggested to delete the labview.ini file located in the installation of labview directory. I did this and the problem was solved.

  Still not sure what caused this to happen.

• Front panel locked, but not due to the structure of the event

  Hi it LV community.

  I did a staemachine program that executes an oscilloscope (screenshot of a provided below... the State of the problem). I ran my program yesterday and it worked very well. Then, like a model, a dialog box opens and I just clicked on it in a hurry. now my front hangs as soon as I move the above-mentioned State "the Oscilloscope settings.

  As indicated, I have go a repeat loop that collects successive impulses of my oscilloscope and displays on the front panel (it works fine). In parallel, I have a structure of the event that makes the tail for the real-time feedback of changes to parameters that I placed on the façade (exodus of state change).

  Here's the problem: as soon as I State 'Oscilloscope Settings' using a Boolean button on the front panel for get me there, the front hangs... No event triggered by this point, and even if it did, I already deselected the "Lock panel until the end of the matter for this event" checkbox in the case where the structure menu.

  So WHY is my front lock now? Thoughts anyone?

  Read the detailed help for event structures.

  He urged that a single event structure serve in a VI. There are moments where more can be used effectively, but caution and a thorough understanding of the structure are needed.

  The problem is that you have several structures of the event in the various cases of the state machine and they are set to respond to the same events.

  When the button Set Oscilloscope, the structures of the event in the purchase Menu and home screen States receive the event. The two lock the screen, but only one of these cases may work. It can transfer control to the State of the Oscilloscope settings, but the other event responding to this same event structure maintains the locked Panel.

  The solution is not not to release any of the event. The default value is usually the best setting. The best solution is to spend on an architecture of producer/consumer (events). Who uses two parallel loops. The producer has the one and the only structure of the event and passes orders to consumer loop through a queue.

  Probalby want as the mechanical action on the buttons to lock when you press. Put kiosks inside the respective case of event changed value and local variables becomes unnecessary.

  Lynn

• reset the timer using a structure of the event

  I wrote a simple code to count the second and the timer can be reset if I press the button "reset".

  It works; However, there are two problems,

  1. when I run the program, the timer takes 1 second to start

  2 when I press the reset button, the timer also takes a second to answer

  I think it's the 1000ms that is connected to the left corner of the structure of the event. Is there a better way to overcome this problem? (the timer starts and resets immediately

  When I launch the program and press the "reset" button)

  Thank you!!

  Dear ivy037

  You can make the time outside the structure of the event as in the attached code.  I would like to know if this is satisfactory.

  Thank you

• structure of the event to turn on and off a LED

  Good afternoon

  I would like to activate a part of my algorithm according to the value in another part. To make it easier, I symbolize the value by a button and tried a structure of user event to turn on or turn off an LED located in another while loop.

  I can turn on the LED, but unfortunately I can't spend off of the LED thereafter.

  It is possible to change the structure of the event and select the option "change value". However, I would like the fatest way to turn on and off using the structure of the event and the Bay. I mean I would like activate a part of the algorithm only if the button is enabled for not having a continuous audit of the value of the button by the structure of the event.

  Please, if anyone has an idea to turn off the LED (after the switch on), add a comment without hesitation.

  I will be happy to solve this simple problem.

  Thanks in advance for your help.

  Ragards

  You have a race condition.

  When you click stop, it's a race about whether if the event gets not saved and destroyed by the removal of the stem all loop against sending the same user in the lower loop.

  Why it only seems to happen with the case of false must be a quirk of how the code is compiled and the order, it is run.

  If you put a step between your Boolean switch and LED, for me anyway, the error is now generated on the true case of the structure of matter (always false for switch.).

  If you put a constant error in the lower loop and wire while guaranteeing the Unregister event so that you now it does not run until the two while loops are arrested, then I don't see a mistake regardless of the value of the Boolean switch when you click stop.

• manipulation of refreshment of the variables within a structure of the event?

  Hi all

  Here I have my problem: I implemented in a data visualization tool, a button to get the updated file.

  But as the mail application provides new files every 2-5 seconds, I wanted to also apply a function to auto-refresh, so that the file is retrieved every XX seconds.

  I've tried several, solution workaround naïve perhaps, but the problem is that when I start the "auto-refresh", I can't handle anything else in the Control Panel, and I can't change the value of the "automatic update control ' because no doubt... He's waiting. Please find attached the photo.

  What Miss me?

  Thanks in advance,

  Edo

  Hey Edo,

  You can use the event to wait for it. Do not use a wait within a structure of the event function.

  Mike

• structure of the event, business, number of iteration

  Hello

  I'm looking for an example of the Structure of the event from the book, LabVIEW for everyone: graph of programming made simple and fun.

  The example in the book looks like this:

  The number of "completed work" is equal to "number of the iteration.

  

  But when I create a Vi and try this example, I got this:

  The iteration number is twice the 'work '.

  

  I enclose my Vi. Anyone know what is the problem with my Vi

  Thank you

  Bing

  Activation and the Boolean value Deactivateion causes events to change the value, but you add only 1 when it is activated. If you set the Boolean action mechanical latch instead of the switch should be the same.

  /Y

• Structure of the multiple event

  Hi all!

  I have a headache off the coast of this problem.

  Example:
  I have a value called: numbers. If I change this value must go in the structure of the event and run the ' numbers: change in value.
  And I have a button, if this button changes, I want it to run as ' number: value change.

  Is it possible to use more then 1 event. As: "numbers: value change gold button: change in value.

  I can't understand it. Could someone tell me it is possible, and if not, how can I solve it?

  I hope someone can help me!

  Thank you!
  Rick

  Hey Rick

  Pretty easy to implement. You just need to add another condition to the case of the event:

  

  I hope that this extract VI will illustrate this (just drag it in LabVIEW - FYI, it is made for 2014):

  

  See you soon

  J