8.6 and 8.6.1 real-time

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• Control of data using multiple thermocouples via indicators and the waveform in real-time

  I apologize in advance for this question is probably a bit simple but I'm all new to labview and the forum and could use some advice. I have a CompaqDAQ with two 9213 16 modules of track and I'm trying to read in 30 thermocouples in a waveform, but also display 30 indicators so I can mark each indicator with the thermocouple for real-time tracking. Each thermocouple corresponds to a specific location and it is essential that the interface has an accurate indication or a label for each of them. I wonder if there is an easy way to do this in addition to split the signal and have 30 thermometers on my diagram? Perhaps a table any? If I use a table to create 30 thermometers, the DAQ assistant automatically sorts the thermocouples according to ascending numerical order. For example, would be the indicators of first and second on my interface automatically assigned to channels a0 and a1 of the first module, or should I do it manually? Even for the waveform?  Thank you very much!

  PS - Do not know if this message had need of more details, but let me know if more information is needed, and I'll give you!

  I see that you use the DAQ Assistant to create your task.  Now I understand why you may have about labelling.  It is easy of the seller NOR spiel booting...  But in any case, you already have a task to the MAX instead of use the DAQ Assistant?  The interface is similar and there may be a step or two, but your end application will be more effective and you will have more options with your data and properties.  For example, I tried to update the names of physical channel in the DAQ Assistant installation program, that it let you do, but it propagates that change forward to waveform chart legend.  Also, I don't know any property for this dynamic data type node, although I never use it either.  I suggest the setting up of your task and channels, Max if you'd give it a go.

  Since I thought I didn't really takes you all the way with you help, I wrote another one.  It uses a cluster, even if it's a bit barbaric.  I thought that there was a more eloquent way to do by changing labels, but I could not it works as I had expected.

• Count the number of times a letter appears in a string and the number of real-time display?

  Hello

  I need to count how many times a letter is contained inside a string that the user types in the text box (i.e., real-time) and display the counter on the page? I would really appreciate if someone can give me some advice how to do this in ActionScript 3.0/Flash CS6.

  Thank you very much in advance!

  A single element, you should not use is a listener for the CHANGE event of a textfield.  You will use as a trigger to check the text in the TextField.

  The details of how you check the text may depend in part on how the text is allowed to enter, but you essentially have to examine each character is entered and determine if it is the character you intend and if so, add it to t a sum.  You can use the String class charAt() method to get individual characters.

• difference between the real time module and module fpga

  Hi experts,

  I was wondering if someone could tell me the difference between the FPGA and the module in real time (in short).

  My understanding is that the FPGA module facilitates code LV that can then be designed for the specific advice of RIO, I have used this a bit in the past.

  The real time module, I'm a little more unsure about, all I know is that it allows the creation of a 'real time' i.e. deterministic environment.

  My request is this: I wish I had several control loops running on two tables of RIO, with the host PC mainly used for recording data and user interface. I see that I have no need of RT on the host (Win XP should be good).

  Do I need the RT module?

  You are right.  In the scenario you describe, you won't need to LabVIEW RT. LabVIEW RT is used to create a deterministic execution on specific targets for intel such as the PXI-8106 and PXI-8108.  You can still use strings and floating point on RT.

• [fpga] Faster communication between FPGA and host in real-time

  Hi all

  I received a card FPGA NI FlexRIO (SMU-7965R) installed on a chassis PXI (SMU-8135 embedded controller). I have an FPGA program to 40 MHz, and I use a real-time program to read a particular variable of FPGA on a regular basis. I do not stream. All I need is to get the most recent value during each execution of the loop of the program in real time (hence, DMA FIFO is not a good option). I am aware that you can read the FPGA indicators in the host program (real time) using the FPGA read/write control function. I used this feature to read a certain variable of indicator FPGA, as shown in the screenshot. The RT program takes 100 micro-seconds (10 kHz), which is not fast enough for my application.

  Is there a faster method to read the latest FPGA data, or the program shown in the screenshot can be modified to reduce the time of loop RT? Any help would be greatly appreciated.

  You're talking about an RT target a sitting in the RT himself FPGA card? If so, have you tried without the IP address of the target. See this thread to see why that would make a difference.

• Starting process in real time

  I have 2 questions related to LabVIEW Real-time. I'm using LabVIEW 2010 Service Pack 1. We have a PXI-8186 controller running the embedded real-time.

  (1) I have my software written to communicate using TCP/IP. The real time software runs the listener 'TCP create' then the 'wait on TCP listener"to look for the connections of the computer. This works well in the LabVIEW project. I then build the executable and deploy it in the system in real time, set up to run during startup. I put the target name to be my program name "Test program.rtexe" rather than "startup.rtexe". I don't know if that makes a difference. I saw the other files in the startup folder of the system in real time that have been named something else. My questions are: the name possible no matter what name we want and the system in real time all programs contained in the startup folder is running or is there another method to specify the programs to be executed?

  (2) is there a way to monitor or to see what programs are running on the system in real time? As the the Task Manager on a windows system. The reason I ask, is that after I restart the PXI system and without using the program of project, I can't connect to my test program running on the system in real time. I don't know if the software is running on the system in real time, is it established that the network interface which it was assumed, etc. to determine why I can not connect with him. Any help on various methods to determine if the software actually runs would be useful.

  Thanks for any help you can give.

  Bill

  Finally found the problem.

  It would seem that, at least in the 2 controllers shipped we have there, controllers have a flag in the BIOS that allows you to disable the file to begin execution on the system in real time. Once I put the flag on the 'NO', everything works. The flag is named:

  'Disable the boot VI' tab 'LabVIEW RT"in the BIOS.

  It is a good option if the boot VI is damaged or was not debugged prior to deployment.

• Digital processing in real-time or on FPGA?

  I am new in time real and FPGA (I got the starter kit 08 - 2012 but I just got all the programs installed a few days).  I saw in the LabVIEW FPGA module and LabVIEW modules in real time, we can use functions of digital processing of the signal on both. In the case, a function is supported on both - what wil be some criterion to decide which one we should go with?

  Much of the decision will probably depend on the type of signal that you are handling. If you have not worked with or the other, real-time is probably easier to start with. On the other hand, FPGA can be better if you look more advanced working or processing on a point by point basis.

  There is a part of the community OR which is dedicated to the analysis and signal processing. I would like to look at some examples and discussions over there to get an idea of what your application can cause.

  https://decibel.NI.com/content/groups/signal-processing-and-analysis

• (Redirected) Real-time clock error

  My laptop is a dell inspiron 17-7737

  a few times when I unplug my cell phone by USB, the laptop turns off and restarts with a real time clock error message.

  What is the cause of this and how this can be solved

  I use windows 8.1

  Hi a Tesoro.

  Please repost this in the laptop computer forum for assistance.

  http://en.community.Dell.com/support-forums/laptop/

• My daughter has an air of ipad and iphone 6 mounted on a tripod. She would like to use his phone to photograph/video while you watch on his ipad (in real time)... is it possible? If so, what adapter or cable is needed?

  My daughter has an air of ipad and iphone 6 mounted on a tripod. She would like to use his phone to photograph/video while you watch on his ipad (in real time)... is it possible? If so, what adapters or cables are needed?

  Hello!

  Unfortunately, this feature is only available with the GoPro cameras.

  And Yes, if all cables already existing for these purposes, it would be kind of a pain to take pictures and do not shake the camera accidentally. Maybe, VSCO camera makers will make such feature in some time in the future. This idea is excellent and innovative. Maybe even Apple will listen to users and make their new iOS 10.

• Measurement and automation Reconoce mi PSC pero no lo reconoce mi of the project. If I have Real - Time Module

  The problem that I have are Measurement & Automation Reconoce mi cFP-2200 pero no lo reconoce mi project osea that al tratar add a new target and the device don't lo encuentra en red y me da el error Bank does not

  That tal Estel3an;

  You can have several reasons para you no one el proyecto the CFP in red, the first seria as the IP address of you PSC not accessible from the sea, are sea porque esta in una diferente subred o porque haya complicaciones in red you see Québec no you allow verlo. En that mencionas como MAX if lo puedes music y detectar none are not likely tan, ordered checar the direccion pero of you PSC y determining what is in the same segment that you PC o see if no is "cae" you red momentaneamente y esto no you eprmita see the CFP.

  Otra razon could ser as the instalacion del software to haya hecho en UN orden distinto al recomendado, for example if instalaste primero LabVIEW Real-time y despues LabVIEW o If instalaste los drivers (NOR-Fieldpoint) LabVIEW time before real tambien you could estar afectando. Instalacion practice are LabVIEW, despues Modulos (in this case LabVIEW Real-time) y por ultimo controllers (in this case NOR-Fieldpoint) of all manera las ligas queden creadas.

  Por ultimo could deberse problem of material of the United Nations, el as ¿podrias asegurarte status LED parpadeando en este no you driver of PCP? para descartar than sea por a problema en el PCP is not in you PC.

  I hope the information you sea ayuda.

  Suerte

• Analyzers of vector signals OR, in real time of tektronix and tests EMC spectrum analyzers

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  1. how to work if vector performance of or
  Analyzers of signals compare to Tektronix real-time spectrum analyzers?

  2 can you emulate Tektronix FFT
  processing overlapping?

  3. is it possible to use vector of NOR
  Analyzers of signals of compliance EMC and/or test preconformite? Is there some
  companies use it successfully? Need a special or custom software?

  Thank you

  Hi emc2006

  I'll answer your questions separated by your topics:

  1 - What is the factor that you want to compare between these two products? In the link below, you will find the performance of the NI PXI-5660 RF Signal Analyzer system.
  2. you can develop this feature of programming in software Application development, i.e. of LabVIEW.
  3. Yes, NI´s vector signal Analyzer could run preconformite or EMC compliance analyses. In the same link below, you will find in the subdivision of Applications.

  http://zone.NI.com/DevZone/CDA/tut/p/ID/4298

  Concerning

  Napoleao
  Application engineering
  National Instruments

• LabVIEW 2014 SP1, hardware and real-time PXI

  I'm doing my third LabVIEW Wipe/reinstall in as many days, completely frustrated (and after several calls an hour with the support of NEITHER).  Here's the situation:

  I wrote a fairly large (1000 VI) project of Acquisition/control of our graduate students data used for behavioral experiment on sound localization.  It was developed in 2012 LabVIEW with the module running on a PC/PXI system real time.  It worked very well and was brought successfully under LabVIEW 2014 (with upgrades comparable to the software of the PXI.

  About 18 months ago the students began to write their theses, and at one point stopped gathering data.  Also, at some point, I upgraded the software on this system to LabVIEW 2014 SP1, but I am not sure that I never tested my software with this new system.

  This week, I pulled up the system to use MAX to open some test on the PXI multifunction and DIO card panels to control manually one of the stimuli.  I discovered that MAX could not communicate with the advice on the PXI system - he attributes them as devices VISA, indicating each Board with an icon with a red X means that he could not communicate with the IP that I had assigned to PXI.  Yet, MAX (a) could "discover" this PXI, (b) MAX can 'see' its IP address, and (c) Windows could not only Ping the IP, but could FTP on the drive of the PXI and I could move files back and forth.

  I did two sequences complete "Wipe/reinstall" using LabVIEW 2014 SP1, all giving the same result.  I know it has worked in the past, including when I installed LabVIEW 2014 (without SP1), something I repeat myself now with my third installation.  I discussed with OR (thin?) possibility that there is a "hidden defect" in the Distribution of the SP1, one that is visible to LabVIEW RT users using PXI hardware and go unnoticed because (a) install a few sites of LabVIEW versions SP1, (b) a minority use the RT Modules and (c) PXI is "old material".

  If anyone has such a system or saw a similar problem, please answer.  I'll do a follow-up post if I managed to 'fix' my system by this last reinstallation "a solution of worked before."

  Bob Schor

  Well, the answer is that, in my system, LabVIEW 2014 SP1 with LabVIEW Real-time connected to a PXI system does not appear to connect to boards plugged into the chassis.  Returning to LabVIEW 2014 (fall release), installed in exactly in the same way that the three failed attempts of LabVIEW 2014 SP1, works immediately.  Engineers OR will try to duplicate/verify/possibly patch? in this issue.

  Bob Schor

• Rotary decoder in real-time and 'pulse shifter '.

  Hello world

  I'm putting in place a rotating decoder for use as a shifter of pulsation by labview real-time.

  Basically, this means I have two input channels (ttl-legumes, ~ high 20us) rotary engine. A channel contains a pulse at each CA (angle cranc) ° up to 12 kHz (increment). The other channel contains a pulse every 720 ° CA (the charge cycle, BDC_cc low break-even point). With this information a pulse to be generated on an output also channel ttl (high), which triggers my setup of measurement. This impulse must be moved in a programmable relationship to the entrance of BDC_cc, which aims at a table of regular measure.

  I got it running by streaming the channel of BDC_cc until a rising edge is detected, then count the edges of increment to the designated trigger point and then generate a pulse on the output channel. The problem is that the late 70-120us exit trigger. In short it's too; a maximum error of ~ 20 is acceptable. Digital channels appear to work faster, so I put discarded Counter-based acquisition.

  I'm quite new to LabView, so I'm sorry if the answer is obvious...

  My purchase setup consists of:

  PCI-MIO-16-1

  BNC-2120

  LabView 12.0
  Max 5.3.1f0

  Widows XP

  This configuration seems to exclude some options Labview offer, such as the external digital acquisition sampled or externally triggered by the acquisition in the base. A manual interpretation of analog inputs is way to slow.

  I have attached my working version.

  Any input appreciated woud...

  John,

  I only have a minute right now, but think I can play with a device simulated tonight or tomorrow.

  I'm quite sure that there would be a clean solution clocked by material if you use a series M or X-series

  Council MIO, but the older generation counters timers on the set of the E series do support everything which

  You need.  It's been a while since I had to rely on this generation of hardware.

  I think the basic approach is to use the lunatics of angle as the clock pulse train that defines the

  delay time of the pulse you want to generate.   You could be "Timer" the pulse based on the real

  angular position, helping you synchronize to a specific angle of crank.  The question is whether and how E-series

  counters of takes to support the generation of pulses triggered (or redeclenchables).  If they are not, I would say that you consider

  get new hardware DAQ which support this kind of trigger and you give a very precise pulse

  implementation.

  -Kevin P

• Continuous data acquisition and real-time analysis

  

  Hi all

  It is a VI for the continuous acquisition of an ECG signal. As far as I understand that the analog read DAQmx VI must be placed inside a while loop so it can acquire the data permanently, I need perform filtering and analysis of the wave in real time. How I implemented the block schema means that data stays int the while loop, and AFAIK the data will be transferred on through the tunnels of data once the loop ends the execution, it clearly isn't real-time data processing.

  The only way I can think to fixing this problem is by placing another loop that covers the screw scene filtering and using some sort of registeing shift to transmit the data in the second while loop. My question is whether or not it would introduce some sort of delay, and weather or not it would be supposed to be the treatment in real time. Wouldn't be better to place all the screws (aquicition and filtering) inside a while loop? or it is a bad programming practice. Other features I need to do is back up the data I na file, but only when the user wants to do.

  Any advice would be appreciated.

  You have two options:

  • A. as you said, you can place the code inside your current while loop to perform the treatment.  If you're smart, you won't need to put one another while loop inside your existing (nested loops).  But it totally depends on the type of treatment that you do.
  • B. create a second parallel loop to perform the treatment.  This would be separate processes to ensure that the treatment is not obstacle to your purchase.  For more information, see here .

  Your choice really depends on the transformation that you plan to perform.  If it's much the processor, this could introduce delays as you said.

  I would recommend that you start at any place in the first loop and see if your DAQ buffer overruns (you can monitor the rear of the buffer during operation).  If so, you should decouple the process in separate loops.

  In what concerns or not ' it would be considered as real time processing ' is a trick question.  Most of the people on these forums say that your system is NEVER in real time because you're using a desktop PC to perform processing (note: I guess it's the code that runs on a laptop or desktop?).  It is not a deterministic systemand your data is already "old" by the time wherever he leaves your DAQ buffer.  But the answer to your question really depends on how you define "real time processing".  Many lay it will set as the treatment of 'live' data... but what is "actual data"?

• Frequently corruption file characterset OCR and real-time CVS1454 exe file

  HI I am facing strenge same problem in the application of vision. I'm using equipment NI CVS 1454. Is there an OCR on CVS application that inspect the product on the conveyor. I made different characters to choose file of different labels on the product. Now main problem is sometimes not exactly when my chracterset file, Pattern matching templete and corrupts my exe in real-time. I joined a few ok and corrupted file characterset here and also an exe in real-time.

  When I open my file (.abc) characterset in Notepad, that I found damaged files after entering text.

  ####
  #Date: Wed, Aug 1, 2008 11:28
  #OSName: PharLap
  #OSVers: 13.0
  #AppName: PH_EXEC
  #Version: 8.5
  #AppKind: AppLib

  LVRT. DLL loads the address: 0x002F6000

  I don't understand how this error massage journal if written in .abc or rtexe files, which make it currupt... I have also attached my structuring code image file.

  Dear prashantpatel21,

  I do not know how to disable the log of LabVIEW RT errors, at least, is not that you or I could have access.

  It's the idea that deactivation of LabVIEW RT logging of errors will decrease even more the impact of corruption?

  Have you made progress with your service request?

  ~ Nate