Strain measurements using labview and DL750 scopecorder

Hi
I want to use labview to do strain measurements using DL750 Yokogawa Scopecorder. I have installed the DL750 drivers and I  can access them from labview, but I am a bit lost as to getting to communicate with the scopecorder, setting up measurements and so on. I am all new to strain measurements and to labview, is there a link or a tutorial that anyone would recommend I refer to?
Regards, tickle

Hi Tickle
It looks like the driver you are using is supported by a third party. I took a look at the driver you are using and it has a couple of examples included with it. I would recommend taking a look at these examples as they are normally a good starting point for communicating with your device. Has anyone else used this device in LabVIEW?
Best Regards,
Adam G 
National Instruments
Applications Engineer

Similar Messages

  • Strain measurement using 9237 and cDAQ 9172

    I am trying to measure strain using a 9237 and cDAQ 9172.
    The strain gage is connected to 9945 (Red wire to EX+, White to IN+ and Black to QTR terminal also tried connected the white and black to IN+ terminal).
    The 9945 is connected to 9237 quarter bridge strain measurement module on a cDAQ 9172. I have two 9237 on the cDAQ 9172.
    The device passes the test in MAX.
    The problem is I cannot read the strain value.
    Can anyone help me please?
    Attachments:
    Strain measure.vi ‏19 KB

    Hi jujare,
    In the VI you attached, you don't have the bridge configuration set up. The default is full bridge I, so if you have a quarter or half bridge wired up, that is one reason you could be getting bad data. I'd suggest you take a look at "Cont Acq Strain Samples(With Calibration)-NI 9237.VI" in the Example Finder. It shows the configuration for bridge type and has some handy wiring diagrams. You could also add controls to your vi to set the bridge configuration if you'd prefer.
    If your strain gauge only has three wires, it's probably a half or quarter bridge. A full bridge needs at least four wires.
    I hope this helps!
    Regards,

  • Retrive the names of step measurements using LabVIEW

    How do you retrieve the names of a multiple numeric step's measurements using LabVIEW? 
    I've constructed a vi to call from TestStand, and will pass it "ThisContext", but the vi doesn't complie.  That's how far I got.  The vi is attached.  The error message is:
    "The method selected in the invoke node is invalid or no method has been selected.  Right-click the invoke node and select a method."
    My vi is an attempt to write the code from
    message.id=10653 in LabVIEW.  Specifically:
    Dim MyStep As [Step]
    Dim MyMeasurement As PropertyObject
    MyStep =
    seqContext.AsPropertyObject.GetPropertyObject("Step", 0)
    MyMeasurement =
    MyStep.AsPropertyObject.GetPropertyObject("Result.Measurement[0]", 0)
    MsgBox(MyMeasurement.Name)
     Can someone help me finish the vi?
    Thanks
    Solved!
    Go to Solution.
    Attachments:
    Dev-GetMeasurementName.vi ‏8 KB

    You missed the the AsPropertyObject in "MyMeasurement =
    MyStep.AsPropertyObject.GetPropertyObject("Result.Measurement[0]", 0)". Checked out the attached.
    I cleaned up your code. Make sure you're closing every reference you get from TestStand or it'll yell at you when you shut the engine down.
    Attachments:
    Dev-GetMeasurementName.vi ‏12 KB

  • I am trying to use Labview and RP1210 compliant hardware to connect to a truck J1939 bus and receive messages.

    I am trying to use Labview and RP1210 compliant hardware to connect to a truck J1939 bus and receive messages. 
    Specifically I am attempting  to read data frames using the RP1210_READMESSAGE .   am able to configure the hardware and send a message to the J1939 bus. .    I think I have not configured something correctly.  I can use the RP1210_SENDMESSAGE and see the message I have sent on the bus using CANalyzer   When I use the RP1210_READMESSAGE   I get the timestamp from a message and the return from the function sends back the correct number of bytes (the number matches the number of bytes I sent out plus four bytes from the timestamp).  What I am having trouble with is actually receiving the data. I have had the same type of behavior from two different hardware (Vector CANcase XL and Nexiq USB Link), so I don't think the issue is vendor specific.
    Has anyone been able to make the RP1210_RECIEVEMESSAGE function work correctly?
    Thanks for any help

    Thanks
    I have already tried that.  The links are the NI RP1210 wraper. The problem I am having is using labview to interface with the RP1210 layer.  The RecieveMessage char*fpchAPIMessage this is the output which is a pointer to a cahracter array.  In this variable I can receive the timestamp of the message but not the message.  The retun showns the correct amount of bytes are aviaable (18 for a 8 byte message) but I can only get the 4 byte timestamp  I think I have to dereference this pointer to view the data.  I am not sure how to fix this. 

  • Please help me with my electrical engineering homework : temperature control and watering system for greenhouse using labview and arduino

    temperature control and watering system for greenhouse using labview and arduino
    spesification :
    1. max temp : 28 celcius (when temperature is more than 28 celcius, fan ON)
    2. min temp : 20 celcius (when temperature is under 20 celcius, heater ON)
    3. watering system : aquaponic (grow plant and fish in separate tank but connect each other). Plant roots help filter water for fish. Fish poop for plants fertilizer. So I need a pump to distribute water.
    Please help me create VI file simulation.. I'm sorry I'm not fluent in English. May God bless you all
    Attachments:
    YOOOSHH.vi ‏88 KB

    Duplicate thread.   Please keep the discussion in that thread where you already have a response. It is also the more appropriate thread for your question.
    Lynn

  • How to recognize certain word or voice (like cry) using labview and kinect?

    By using labview and kinect, how to recognize some sample world like 'ok', 'help', and voice like crying and screaming?

    This is not really a LabVIEW question, but a signal processing question. Do you have a set of crying sounds in order to be able to calibrate whatever algorthm you are trying to implement?
    LabVIEW Champion . Do more with less code and in less time .

  • Frequency measurement using Labview 8 and Fieldpoint FP-CTR-502 - wind speed measure

    All the information regarding this kind of application seems to be outdated, I did not find no solution or example to construct frequency measurement VIs using Labview 8
    The examples at "NI Discussion Forums :
    Most Active Hardware Boards :
    FieldPoint Family :
    Low-Frequency measurements using counter/timer" is very strange and so far the steps given seems to be usefull only do old Fieldpoint Explorer.
    I was trying to find a way to learn how to make an anemometer send its signal to a FP-CTR-502 but I have no sucess.
    I am realy very new on this Labview stuff, any help would be welcome.

    (similar thread here)
    Message Edité par Mathieu R. le 12-23-2005 02:28 PM
    .mrLeft{float:left} .mrInfo{border-left:solid 1px #989898;font-size:x-small;color:#989898}
    Mathieu R.  
      CTD - Certified TestStand Developer / Développeur TestStand Certifié  
      CLAD - Certified LabVIEW Associate Developer  

  • RTD Temperature Measurements using LabView 2013 and MyRio

    Hey everyone.  I am VERY new to LabView programming and working with a MyRio.  I need to figure out how to measure the resistance of a 2 wire RTD to find a temperature utalizing the MyRio and LabView.  I am pretty lost on how to do this.  Does anyone know some good resources for making the LabView program off of the tops of their heads?  I've figured out how to measure from specific pins, but I am not sure how to get it to constantly output a voltage from the output pins.
    Eventually, I would like to have it display the temperature as well as have it turn on or off a heater depending on that temperature, but that will come far later in this process. First things first, how do I take temperature measurements utalizing LabView 2013 and a MyRio with a 2 Wire RTD. 
    Thanks so much!

    Hi JoshEpstein87,
    The myRIO can't acquire a change in resistance directly, so you'll need to somehow convert the change in resistance to a change in voltage. There are multiple ways to do this, but you'll need to build an external circuit and then read the voltage output with the myRIO. One example of a circuit that allows you to do this can be found here. To output a voltage on the analog output pins, you should just need to set the output voltage and then it will remain at that voltage until you change it or power cycle the myRIO.
    To get started with LabVIEW and myRIO programming, see the following page:
    http://www.ni.com/myrio/setup/getting-started/
    There are some links to LabVIEW training as well as resources about RIO programming. I also highly recommend you check out the myRIO Community as there are example programs on there that you can take a look at to see how they are designed.
    Best Regards,
    Matthew B.
    Applications Engineer
    National Instruments

  • Measure Power using Labview and two PXI-4071 DMMs

    Hello,
    I am trying to make a simple VI.  I am measuring input AC voltage and Current using two PXI-4071 DMMs.  I want to Calculate Power and Power Factor.  I am able to read the voltage and current fine.  I just dont know how to calculate the power and power factor.  Im looking for real power not watt*amps.  Please Help.
    Scott
    Attached is my VI
    Attachments:
    Measure AC Voltage and Current.vi ‏42 KB

    Scott,
    It appears that another applications engineer (Sean_N) has been assigned your initial forum post. I assure you that he is working on finding an answer to your question. We would like for our customers to limit questions to one forum so that we do not duplicate efforts on our end. I will contact Sean to remind him that you are awaiting a response. I will also point all future traffic from this post to your initial one.
    Thanks,
    Kareem W.
    National Instruments
    Web Product Manager

  • Looking for full time position using Labview and/or PLC's in Long Island NY area

    I have 13 years experience using Labview for user interface/daq applications.  I also have 20 years experience with Programmable Logic Controllers (PLC) programming for industrial machine controls.  My resume follows:
    Adam Wechsler
    111 Holbrook Rd.,Holbrook,NY 11741,(631) 981-1013 [email protected]
    Objective
    Labview programming, virtual instrumentation, industrial machine controls,
    automation, PLC, HMI, GUI, data acquisition
    Education:
    B.S. Mechanical Engineering 5/89
    Polytechnic University, Brooklyn, NY
    A.S. Engineering Science 5/86
    Suffolk Community College, Selden, NY
    (GPA 4.0 Dean's List Spring 1986)
    Experience:
    Controls Engineer 5/1994-3/2009
    Vacuum Instrument Corp., Ronkonkoma, NY
    *Program, troubleshoot, and upgrade automated Vacuum Chamber Industrial Leak Detection systems controlled by Allen Bradley PLCs in an OEM environment.
    *Debug equipment functions and programs prior to shipping, at customer's site, and by phone.
    *Integrate and install various types of peripheral equipment, barcode scanners and printers,
    *Design and develop Labview graphical user interfaces and HMI applications including recipe management and data collection for industrial machinery.
    *Write and review user manuals and installation instructions.
    Production Engineer 10/1989-5/1994
    Izumi Corporation, Yaphank, NY
    *Program, maintain, troubleshoot, and repair PLC controlled hydraulic, pneumatic, and control systems for automation in a hands-on environment.
    *Improve design for manufacturability of new products and prototypes to be urethane/injection molded.
    *Program, maintain, troubleshoot, and repair six axis hydraulic paint spraying robots.
    *Create interface between multiple PLC’s and central computer system.
    *Improved design and productivity of high volume, computer controlled, robotic molding machine by 150%.
    Consulting Projects:
    *Created Labview user interface components, and recipe management system for the testing of motion control servos.
    *Programmed Allen Bradley PLC machine logic for packaging machine for a food service supplier.
    *Created Labview to Allen Bradley PLC setpoint and monitoring interface for electric motor-starter test stand.
    *Programmed Allen Bradley PLC and PanelView operator interface terminal for cosmetic packaging assembly machine.
    *Developed Labview application for Fourier and statistical analysis of myogram biomedical data for researching the efficacy of acupuncture treatment.
    Other:
    *Attended National Instruments Labview training courses, and regularly attend local Labview Users Group meetings as a long standing member.
    *Member IEEE
    *13 years experience with Labview
    *15 years experience with vacuum chamber, mass spectrometer, and related technologies
    *20 years experience with PLC's and automated systems
    *Attended Autocad training course.
    *Willing to travel

    Will also consider contract, part time, or consultant work.

  • How to detect baby crying using labview and webcam?

    Hi, I am new to labVIEW. I have a project that it requires me to develope a application to detect various types of  baby crying using labVIEW.The hardware we use will be webcam or kinect xbox 360. The system for my computer is windows 7. I used to try to create a threshold frequency to detect baby crying,but it not work well. So  I want to ask what else method should I use to develop this application that can differentiate baby crying with other kind of sound( like normal talk, music...) correctly? As I just start learning labVIEW, hope the method to be easy to understand. Thanks.

    This is not really a LabVIEW question, but a signal processing question. Do you have a set of crying sounds in order to be able to calibrate whatever algorthm you are trying to implement?
    LabVIEW Champion . Do more with less code and in less time .

  • Plot different data set depending of some conditions using labview and veristand

    Hi Community,
    i have a couple of points saved as XY data points on my desktop.  The files are save as csv.  the idea is to read the file utilizing the Read From Spreadsheet File vi when some conditions are met and then plot the XY data wiht XY Graph Addon of the veristand workspace.
    for instance:
    if case 1 is true read the corresponding file and then plot the first set of data
    if case 2 is true read the corresponding file and then plot the second set of data
    if case n is true read the corresponding file and then plot the n set of data.
    Could you give some advices how to implement it (Labview and Veristand)?
    I'm using LV and NIVS 2012
    Thx
    Mich
    Attachments:
    vide.vi ‏35 KB

    Hi Michel,
    I believe the easiest method will be to use the VeriStand .NET API to call into VeriStand and utilize LabVIEW for creating the decision making cases that you have.  I have attached some examples of using the VeriStand API in LabVIEW.
    Using the NI VeriStand .NET API in LabVIEW to Control a VeriStand System
    https://decibel.ni.com/content/docs/DOC-32268
    Where Can I Find LabVIEW Examples Using the NI VeriStand API?
    http://digital.ni.com/public.nsf/allkb/E1066949FA67B6CE862578A7005988D5?OpenDocument
    Please let me know if this helps.
    Matt S.
    Industrial Communications Product Support Engineer
    National Instruments

  • Using LabView and Modbus to Communicat​e with AKD Servo Drive

    I’m working on a project to control a Kollmorgen AKD servo application using Modbus directly from LabVIEW.  I’m new to both LabVIEW and servo drives so forgive me if this seems simple.  I have established communications to the drive through Modbus and have been successful at some rudimentary control of the servo.  I know the drive only supports "Write Multiple Registers” and “Read Holding Registers” functions and there are scaling factors that need to be applied.  What I need is some help with taking the Modbus information supplied by Kollmorgen for each command and formatting it for communication to the servo and vice versa.  I need to understand how to take the supplied 8, 16, 32, and 64 bit information for commands, scale it, and format it into the two or four registers required for the drive to read the parameters.  In turn, I also need to understand how to take the same information and read it and scale it from the drive.  I’ve attached a spreadsheet with the particular commands I’m interested in and a sample VI that seems to work for speed control but to be honest, I'm not sure how/why.
    Attachments:
    KM Modbus Cross Reference.xlsx ‏57 KB
    VEL.CMDU.vi ‏10 KB

    OK, I've got the ability to read values from the AKD drive pretty well sorted out.  I'm now having trouble with the ability to write.  I want to use Labview to program Motion Tasks in the AKD drive.  To do this I need to perform three commands: MT.NUM (specify the motion number), MT.P (specify the angular position), and MT.SET to set the parameters for the task.  MT.P requires sending a 64 bit signed float or a 32 bit signed float (requiring four or two registers respectively).  I used ModPoll to see what values the drive held in the MT.P registers after entering the desired angular position using the AKD Workbench software.  For example: using Workbench I entered 234.567 for the angular position and read 208 and -32506 from registers 2060 & 2061 (the 32 bit registers for MT.P).  After scouring the forum I put together the attached VI to try to write to the same registers but I can not seem to get the translation of the input (angular position) to the register values correct (entering 234.567 does not produce 208 and -32506 in registers 2060 & 2061).  Anyone have any ideas?
    Attachments:
    Motion Task Definition Rev H.vi ‏21 KB

  • How do you track a moving object using Labview and Vision Assistant

    I am using Vision and Labview to create a program that tracks and follow a moving object using a high end camera. Basically what it does is it detects a foreign object and locks on to it and follows it where ever it goes in a control sized room.
    I have no idea how to do this. Please help. Or is there an available example.
    Thanks.

    Hello,
    It sounds like you want to look into a Vision technique called Pattern Matching.  Using our Vision tools, you can look for a image, called a template, within another image.  Vision will scan over the entire image of interest trying to see if there are any matches with the template.  It will return the number of matches and their coordinates within the image of interest.  You would take a picture of the object and use it as the template to search for.  Then, take a picture of the entire room and use pattern matching to determine at what coordinates that template is found in the picture.  Doing this multiple times, you can track the movement of the object as it moves throughout the room.  If you have a motion system that will have to move the camera for you, it will complicate matters very much, but would still be possible to do.  You would have to have a feedback loop that, depending on where the object is located, adjusts the angle of the camera appropriately.
    There are a number of different examples a that perform pattern matching.  There are three available in the example finder.  In LabVIEW, navigate to "Help » Find Examples".  On the "Browse" tab, browse according to "Directory Structure".  Navigate to "Vision » 2. Functions".  There are examples for "Pattern Matching", "Color Pattern Matching", and "Geometric Matching".  There are also dozens of pattern matching documents and example programs on our website.  From the homepage at www.ni.com, you can search in the top-right corner the entire site for the keywords, "pattern matching". 
    If you have Vision Assistant, you can use this to set up the pattern matching sequence.  When it is complete and customized to your liking, you can convert that into LabVIEW code by navigating to "Tools » Create LabVIEW VI..."  This is probably the easiest way to customize any type of vision application in general.
    I hope this helps you get started.  Take care and good luck!
    Regards,Aaron B.
    Applications Engineering
    National Instruments

  • How to detect a lost TCPIP SOCKET using LabVIEW and NI VISA

    I am using VISA functions in LabVIEW to remotely communicate with instruments over TCPIP SOCKET visa resources.   In general this all works well by simply creating a resource name, passing it to VISA Open and then setting a couple of session attributes.   Occasionally an instrument will be reset or power cycled and what I have noticed is that I need to call a VISA Close and then reopen the resource in order to get it to communicate again or close LabVIEW and run again.   If you just use VISA Open without calling a VISA Close first you cannot communicate with the target.   The problem is that I have no way of detecting this condition.   I have tried always calling a VISA Close before VISA Open and this seems to work for this condition but it seems odd to always close a session before opening it.   Why does VISA OPEN not work under this condition and is there any way to detect this situation?
    Solved!
    Go to Solution.

    It works that way because that is how TCP works. A TCP connection is a dedicated connection between two endpoints. Unfortunately other than getting an error from a read or write operation there is no way to determine if the othe rside of teh connection is still there. You need to close the connection because otherwise VISA will continue to use th eold connection which is no longer valid. Closing it allows the system to cleanup the dead connection.
    If you are communicating fairly infrequently you could simply open the connection, do you stuff and close it. The overhead for establishing the new connection is not that much. If you are using steady streams of data then you will need to watch for the errors and then reestablish the connection by closing the old one and opening a new connection as you have observed.
    Mark Yedinak
    "Does anyone know where the love of God goes when the waves turn the minutes to hours?"
    Wreck of the Edmund Fitzgerald - Gordon Lightfoot

Maybe you are looking for