The substitution of DAQmx writing?

Similar Questions

• Daq stop task VI back to the State of the task was really forward the DAQmx Start Task or DAQmx writing?

  Hello

  I use DAQmx and DAQ Assistant and try to get the details on the following questions.

  1 does Daq stop task VI really return to the State of the task is in front the DAQmx Start Task or DAQmx writing? Digital Input taking as an example, I don't think that the status of the task means that input data because I tried and I can't really back to the entry level it was.

  Maybe more experienced people can help to share their expertise.

  2. the information in help indicates "virtual channels created with the function/VI DAQmx create Virtual Channel are called virtual channels the and cannot be used in the task." But I don't know what "in his work" means.

  3. could I get some guidelines or expertise on the Labview programmers when use virtual channels the and when, to the more global?

  Thank you!

  Best regards

  Allen

  If you create a channel of the task, or scale just usuing the screw to create or Assistant session wire io is the only way to pass the info autour.  It is not saved anywhere on the disc.  A channel of the task or the scale in a project can be used by anything in this project.  A channel of the task or the scale recorded in MAX can be used by anything on this machine.  Its an extended thing.

  And Yes, the DAQ Assistant fresh extra performance overhead and the poor than the DAQmx API.  Often, it won't have the impact of a little experiment.  Large applications should avoid the express Visa.

• DAQmx writing

  Hello

  I am trying to simultaneously acquire a signal while generating / writing a signal chirp (swept sine wave), which varies from 0 to 800 Hz. before, I was able to do it using a loop timed with 1 KHz clock and 100 msec period. The sampling rate for the moment for generation DAQmx was 4000 Hz, and the number of samples per channel was set at 400. In the timed loop samples per channel for the DAQmx write that VI is set to 400. I used "Creat an analog Signal" express VI into the loop timed to generate the beep signal using a 4000 Hz sampling rate and number of samples of 400. The FFT of the acquired signal was clean with almost no noise inside.

  Now, I changed the above parameters such as the VI can be used for real-time closed loop control. So I reduced the samples per channel in all cases to 1 and use the clock 1 MHz with 200 micro-sec period, acquisition and generation at 4000 Hz. However, evaluating the acquired signal FFT, I realized that it contains a lot of noise, while the previous code with 400 samples per channel contained no noise for a frequency to 1000 Hz band.

  I think that the problem comes from the high sampling rate with the small number of samples per channel for the writing VI DAQmx. My feeling is that the DAQmx doesn't have enough time to write all of the samples in the buffer. I tried different values for the timeout for DAQmx VI (reading and writing DAQmx) in the timed loop, but it did not work... I gave the last VI here. Can someone help me where the problem is?

  Also, is it possible that I can monitor the actual values of the data written (i.e. the output of writing DAQmx)?

  Thank you

  You mentioned the loop is expected to completed in 330 microseconds. If it is not designed to finish at 200 microseconds based on the period of your timed loop? It would be the best way to control real time loop to connect an indicator to the duration of the iteration inside the timed loop.

  It seems that you have configured your VI DAQmx of Timing to get a sampling rate of 4000. You then write a signal with respect to 12000 s/s from the node to create an analog Signal. I recommend you keep these two consistent values. If you are wanting to read/write data at 4000 Hz, which would be linked to a period of 250 microseconds. You can increase the length of your timed loop 250 or more.

  You can attach a screenshot of some data that you had who had less noise for comparison purposes?

• Install the driver OR DAQmx 9.7.0 Application Development Support

  Hello

  I'm currently trying to install Labview 2009 (my old copy was lost in case of overheating of the motherboard of my old computer). The installation went very well, I think, and I am able to create new projects etc.

  When I downloaded the driver NOR-DAQmx 9.7 (full installer), I seem to be impossible to install several pieces of software - please see the attached file error. I'm not worried about the track of I/O OR 3.0.2, NI MAX 5.4 or NI Network Browser 5.4.0 because I think higher editions I have are backward compatible.

  With the support for development applications OR DAQmx 9.7.0 however, impossible to install this because of incompatible products. Do you know what kind of products, this error refers to? I am at a loss, because I don't know what the symbol shown in the screenshot (I accessed this window with a custom train installation, but I can't change to a tick/cross).

  Thank you in advance!

  Carl

  Hi James,

  Thanks for responding. I managed to fix the error: I found that the version of NI-VISA installed on my computer was version 5.4, which is not compatible with LabView 2009. As soon as I uninstalled it and instead added version 5.3, I was able to install DAQmx ADE without problem.

  Thank you once again!

  Carl

• Impossible to install the driver OR DAQmx on Win7 x 64

  I'm running Windows 7 x 64 and try to install the driver OR DAQmx 9.0.2.  However, the first time I did it, I got a partial installation.  Subsequent attempts to re - install give me the message that I need to first uninstall.  However, the program is not listed in install/uninstall programs.  I tried to run the cleaning for Vista, but it tells me that I have x 64 Windows so it does nothing.  So I'm stuck now impossible to uninstall what remaining NOR-DAQmx stuff is on my PC and cannot install again.  If you have advice on what to do, let me know.

  Thank you.

  Hey ness.

  Try to use MSI Blast to walk through the steps described in the pdf document.  Hope this helps!

• 8.6.1 in lv 2009 update, missing lv vi, for the most part DAQmx errors

  I created an application with LV 8.6.1.   I have two 8.6.1. and lv 2009 on this computer.  When I click on the shortcut, lv 2009 automatically tries to load the application and gives me errors because it cannot find the sub live, for most of the screws of DAQmx.

  1 - is there a way I can get the shortcut to automatically load lv 8.6.1?

  2 are there in fact files I am missing that prevents the application from loading in LV 2009?

  I don't know what shortcut you are talking about. If it is a shortcut to the exe file, neither 8.6.1 or 2009 will begin. If you have a shortcut to a project or VI, then the version of LabVIEW that you last started will be charged. Just manually start 8.6.1, close it and next time 8.6.1 will begin.

  LabVIEW 2009 requires you to install DAQmx. You have a version compatible with your distribution of 2009. You can also download 8.9.5 or version 9.0.0.

• MAX does not see the cards as DAQmx

  I have three cards OR in my machine: PCI-6602, 6120-PCI and PCI-MIO-16-4 (aka PCI-6040E).  For some reason any my measurement & automation explore (MAX) does not see them I expect.  He sees the card PCI - MIO in the DAQmx and NOR-traditional DAQ records, but he sees that the other two in the traditional NO-DAQ folder.  I should be seeing them all DAQmx AFAIK.  I read in a post on this forum that I can be a corrupted database MAX; so, I renamed and restarted does not.  I have applications that I programmed in Delphi that see, acess and use all three cards using traditional DAQ, so I know they work, at least to some extent.  When I use LabVIEW, he sees only the PCI - MIO map for operations of DAQmx and I'd like to find a way to make all three of them consider DAQmx.  I believe all three cards are compatible with traditional DAQ or DAQmx.  My installed software versions are: LabVIEW 7.0, MAX 4.2.1.3001, NOR-Spy 2.0.0.16, 1.70 OR-488. 2 NOR-DAQmx 7.0.7f0, NOR-PAL 2.0.0 OR-SWITCH 2.00.49156, NI-VISA 3.1, NOR-DAQ 7.4.4f7 traditional (I also tried 6.9.3f4 version without success).

  I hope that it is something with a simple fix.

  Thanks in advance to those who take the time to read and respond to this message.

  Thank you

  Neil

  Did you look in the Readme for DAQmx 7.0? It was the first version and these devices were not yet supported. The latest version of DAQmx you can perform with LabVIEW 7.0 is version 8.1. These cards are listed as being supported.

• RT system timeout when updating the driver NOR-DAQmx 8.9.5 to 9.0.2

  I installed LabVIEW 2009 on my host (Window XP) which has now NOR-DAQmx 9.0.2 installed.  My remote RT chassis has NEITHER-DAQmx 8.9.5 installed.   I need to have versions of NOR-DAQmx match on my host computer and remote systems.  I tried to install the driver OR DAQmx 9.0.2 my host by using the LabVIEW Real-time Software Wizard.  The Installer tries to restart the remote chassis on the installation mode but expires and returns the error Code 56.  How can I get my versions to match?

  Problem caused by the wrong installation order.  Necessary to install 9.0 RT first on target.  NOR-DAQmx has been updated at the same time.

• Can MapPoint 2011 - be installed without the substitution of previous versions?

  I need to be able to keep older versions of MapPoint on my laptop while having access to 2011.  I could install 2009 without the substitution of 2004 and 2006, but my IT people say it cannot be done with 2011.  Can he?

  Hello

  Check with the help of MapPoint and in the MapPoint Forums.

  Highway, Streets & Trips, MapPoint - Forum
  http://social.Microsoft.com/forums/is/streetsandtrips/threads

  MapPoiint - Support
  http://www.Microsoft.com/MapPoint/en-us/support.aspx

  Support for MapPoint, streets & trips and Highway
  http://support.Microsoft.com/ph/851

  I hope this helps.

  Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

• Inspiron 17 HDMI Audio of the substitution of Jack?

  Just set up my new laptop (Inspiron 17 7000 Series) and have a separate monitor running off the HDMI to my office.  With the connected monitor, HDMI seems to be the substitution of the audio input jack.

  I would listen to my headphones while working, but taking only works if the HDMI is disconnected.

  How can I rectify this?

  Hello. Try to go to the playback of the sound properties (right click on the audio icon > playback devices) and select speakers from the devices list and make it the default device. You may need to do this each time you connect HDMI.

• 867 GB memory complete disk because of the deletion program over writing fail, how can I restore my memory?

  867 GB memory complete disk because of the deletion program over writing fail, how can I restore my memory? Windows 7 Edition home premium

  64 bit

  The disks do not have memory that they have space.

  Care to be more specific?

• the substitution of keyCharUnhandled menu appears.

  I'm having a problem when the substitution of keyCharUnhandled that the menu item is not displayed.

  That's what I want to achieve.

  public boolean keyCharUnhandled(char key, int status, int time)
      {
          char escape = Characters.ESCAPE;
          if(key == escape)
          {
              // Push new screen
          }
          else
          {
              // Handle as normal
          }
      }
  

  I read a lot of posts, but I can't get the final answer. Something has been said about the call Super. But what syntax can I use to do this?

  Concerning

  super.keyCharUnhandled back in the channel in the normal course

• is it far to disable the shortcut ctrl-alt-tab on windows 7 (cycle between windows) to avoid the substitution of this same shortcut (indented) in excel?

  is it far to disable the shortcut ctrl-alt-tab on windows 7 (cycle between windows) to avoid the substitution of this same shortcut (indented) in excel?

  Hello
   
  The feature you're talking about is the default value of design in Windows 7. If you have comments or suggestions, you can post your query to the Windows 7 feedback forum.

   
  http://mymfe.Microsoft.com/Windows%20%207/feedback.aspx?formid=195

• The substitution of controller on HR Self Service salary Page

  Hello

  I am very new to the OFA, and one of our users asked us to do a required field. The name of the field is reason for change in salary. They do not want this customization, and that's why I ended the substitution of the controller. The controller checks the value of this field on the button apply on ProcessFormRequest. If the value is empty, the controller should trigger just an OAException. Everything works fine except the value of the reason to pay is not sent to the review page and after committing, the value does not appear in the database. Another strange thing is that if I Uncomment super.processFormRequest (oapagecontext, oawebbean); statement as the first line of the PFR, the value is passed successfully, but my validation of Virgin pay reason does not occur. That of why I wrote the Super in the else statement and commented on one. But with this code, the value of the reason for the compensation is not passed. Any help is appreciated. Here is the code:

  SerializableAttribute public class XXPERProposedPayCON14 extends ProposedPayCO {}

  public XXPERProposedPayCON14() {}

  }

  public void processFormRequest (OAPageContext oapagecontext,

  {OAWebBean oawebbean)

  super.processFormRequest (oapagecontext, oawebbean);

  Oaapplicationmodule = OAApplicationModule

  oapagecontext.getApplicationModule (oawebbean);

  Oadbtransactionimpl = OADBTransactionImpl

  (OADBTransactionImpl) oaapplicationmodule.getOADBTransaction ();

  String oafuncvalue = "";

  If (oapagecontext.getTransactionValue ("PER_OAFUNC_VAL")! = null) {}

  oapagecontext.writeDiagnostics (this,

  (new StringBuilder()).append("oafunction_processFormRequest_is_==").append (oapagecontext.getTransactionValue ("PER_OAFUNC_VAL")) m:System.NET.SocketAddress.ToString (),.

  (1);

  oafuncvalue =

  (String) oapagecontext.getTransactionValue ("PER_OAFUNC_VAL");

  }

  If (oapagecontext.getParameter ("Apply")! = null) {}

  If (oapagecontext.getParameter ("PayReason") == "") {}

  oapagecontext.writeDiagnostics (this,

  "Inside to pay for reason is empty 1.

  (1);

  throw new OAException ("Please select a value for reason of salary change", OAException.ERROR);

  return;

  } else {}

  oapagecontext.writeDiagnostics (this,

  "Inside another reason to pay is not void 2,

  (1);

  super.processFormRequest (oapagecontext, oawebbean);

  HashMap hashmap2 = new HashMap (3);

  hashmap2.put ("PER_TRANSACTION_ID",

  oadbtransactionimpl.getValue ("TX_TRANSACTION_ID"));

  hashmap2.put ("PER_TRANSACTION_STEP_ID",

  oadbtransactionimpl.getValue ("TX_TRANSACTION_STEP_ID"));

  hashmap2.put ("FROM_INTERNAL_FLOW", "Y");

  hashmap2.put ("OAFunc", oafuncvalue);

  oapagecontext.setForwardURL ("OA.jsp?page=/oracle/apps/per/selfservice/deployperson/webui/AssignmentPG",

  NULL, (byte) 0, null, hashmap2,.

  true, ', (byte) 0);

  } //else

  }

  If (oapagecontext.getParameter ("Cancel")! = null) {}

  HashMap hashmap = new HashMap (1);

  HashMap.put ("FROM_INTERNAL_FLOW", "Y");

  HashMap.put ("OAFunc", oafuncvalue);

  oapagecontext.setForwardURL ("OA.jsp?page=/oracle/apps/per/selfservice/deployperson/webui/AssignmentPG",

  NULL, 0, null, hashmap, true (byte),

  ', (Byte) 0);

  }

  }

  public static final String RCS_ID =

  ' $Header: XXPERProposedPayCO.java 120.31.12010000.7 2010/03/23 10:52:38 vkodedal ship $';

  public static final boolean RCS_ID_RECORDED = VersionInfo.recordClassVersion ("' $Header: XXPERProposedPayCO.java 120.31.12010000.7 2010/03/23 10:52:38 vkodedal ship $',")

  "oracle.apps.per.selfservice.changepay.webui");

  }

  Hello

  They do not want this customization, and that's why I ended the substitution of the controller.

  Why? No particular reason?

  If you just want to check extra, just do this in your controller.

  Something like below:

  public class XXPERProposedPayCON14 extends ProposedPayCO {
  
    public XXPERProposedPayCON14() {
    }
  
    public void processFormRequest(OAPageContext oapagecontext,OAWebBean oawebbean) {
    oapagecontext.writeDiagnostics(this,"Inside custom Controller",1);
    if (oapagecontext.getParameter("Apply") != null) {
    oapagecontext.writeDiagnostics(this,"Inside Apply",1);
    String payReason = oapagecontext.getParameter("PayReason");
    oapagecontext.writeDiagnostics(this,"payReason:"+payReason,1);
    if ( payReason == null || "".equals(payReason) {
    oapagecontext.writeDiagnostics(this,"Inside if Pay Reason is blank 1",1);
    throw new OAException("Please Select a Value for Salary Change Reason", OAException.ERROR);
    }
    }
    super.processFormRequest(oapagecontext, oawebbean);
  
    /*
    //super.processFormRequest(oapagecontext, oawebbean);
    OAApplicationModule oaapplicationmodule = oapagecontext.getApplicationModule(oawebbean);
    OADBTransactionImpl oadbtransactionimpl = (OADBTransactionImpl)oaapplicationmodule.getOADBTransaction();
    String oafuncvalue = "";
    if (oapagecontext.getTransactionValue("PER_OAFUNC_VAL") != null) {
    oapagecontext.writeDiagnostics(this,(new StringBuilder()).append("oafunction processFormRequest is == ").append(oapagecontext.getTransactionValue("PER_OAFUNC_VAL")).toString(),1);
    oafuncvalue = (String)oapagecontext.getTransactionValue("PER_OAFUNC_VAL");
    }
    if (oapagecontext.getParameter("Apply") != null) {
    if (oapagecontext.getParameter("PayReason") == "") {
    oapagecontext.writeDiagnostics(this,"Inside if Pay Reason is blank 1",1);
    throw new OAException("Please Select a Value for Salary Change Reason", OAException.ERROR);
    //return;
    }
    else {
    oapagecontext.writeDiagnostics(this,"Inside else Pay Reason is not blank 2",1);
    super.processFormRequest(oapagecontext, oawebbean);
    HashMap hashmap2 = new HashMap(3);
    hashmap2.put("PER_TRANSACTION_ID",
    oadbtransactionimpl.getValue("TX_TRANSACTION_ID"));
    hashmap2.put("PER_TRANSACTION_STEP_ID",
    oadbtransactionimpl.getValue("TX_TRANSACTION_STEP_ID"));
    hashmap2.put("FROM_INTERNAL_FLOW", "Y");
    hashmap2.put("OAFunc", oafuncvalue);
    oapagecontext.setForwardURL("OA.jsp?page=/oracle/apps/per/selfservice/deployperson/webui/AssignmentPG",null, (byte)0, null, hashmap2,true, "N", (byte)0);
    } //else
    }
    if (oapagecontext.getParameter("Cancel") != null) {
    HashMap hashmap = new HashMap(1);
    hashmap.put("FROM_INTERNAL_FLOW", "Y");
    hashmap.put("OAFunc", oafuncvalue);
    oapagecontext.setForwardURL("OA.jsp?page=/oracle/apps/per/selfservice/deployperson/webui/AssignmentPG",null, (byte)0, null, hashmap, true,"N", (byte)0);
    }
    */
    }
  
    public static final String RCS_ID = "$Header: XXPERProposedPayCO.java 120.31.12010000.7 2010/03/23 10:52:38 vkodedal ship $";
    public static final boolean RCS_ID_RECORDED = VersionInfo.recordClassVersion("$Header: XXPERProposedPayCO.java 120.31.12010000.7 2010/03/23 10:52:38 vkodedal ship $","oracle.apps.per.selfservice.changepay.webui");
  
  }
  

  See you soon

  AJ

• How to use the substitution in case of construction dim variable

  Hi all

  Lets say I have 3 void / vars - Prevmonth prevmonth-1, prevmonth-2. These change every quarter.

  I want to build a cube that will be who will have only 3 months preceding the fiscal dimension. This will serve once at the end of the quarter.

  What should I do for the substitution if build rules files variables dim? I want to automate the process. We have Sun for other dims build SQL, only the Sun can be built as flat file.

  Or y at - it another way to do this Besides using sub vars? I can try to store 3 variables in a table and then use them to create the cube, but want to see if we can avoid creating an interface more.

  Thank you.

  You can use substitution variables, as in the SQL of the charge state - rules for the Substitution Variables

  See you soon

  John