series read write

Similar Questions

• Visa series read write

  Hello..

  I have no problem with reading series. I want to playback multiple visa series... Fist read I want to read the data of 5x8bit uC then if visa data read isnot "NOT" I'm going to send data to the CPU as the character ' end then read data from uC to new but is leght data 2x8bit data...

  Please, help me...

  This is the number of bytes you want to read. You already said you first want to read 5 bytes. If you use VISA set up the Serial Port and the stop character allow to true, you can set a number of high bytes and playback will end when the stop character is detected. The character of default endpoint is a line break. If you set it to false, you can use the bytes VISA to the Serial Port to determine the number of bytes in the buffer is and read this number. This makes the basic example.

  Did you do any debugging serial communication base? I suggest that you use a program like Hyperterminal/Procomm/Putty/.etc before trying to write your own program. It is also difficult to give detailed advice without knowing how you have set the serial communication of the microphone.

• cut a red number first element in reading series VISA write vi

  I want to put the serial number of a card RFID in LAbVIEW and for that I used VISA base series read VI... The Red number by which is in the following format...

  2045A15F50... im getting a square in front of tis number... How to eliminate this place?

  Sorry, I am very new to LAbVIEW and have no idea about that... So please help me

  The square indicates her you received an "unprintable" ASCII character  This could be an indicator of 'Start of message' series equipment.  They are often used in certain communications.  Read the manual of the device would be a good place to learn the expected format.  Has LabVIEW some built-in string functions as 'Trim Whitespace, vi' which can remove characters which are white space (tabs, spaces etc.) and this code snippet shows how to remove all nonprinting charaters in a string.

  

• Synchronization with Serial read/write problems. can not get the functionality of the terminal emulator

  Hello

  I am writing a VI to control PWM with a microcontroller via a serial port. I wrote a simple code for the microcontroller that allows me to set the ratio of duty cycle on a scale of 0-65535. It works very well with Termite of Compuphase (RS-232 plug); The microcontroller invited me to an entry, expected that I would one, updates and expected another entry when I decided to send him. Now, I'm trying to get the same functionality on a LabVIEW vi but hit a snag.

  When I tried to send my orders with a series read base and an example of writing, everything worked fine. I could see the prompt entry, write an entry and if I was quick enough, check out the update message. Even when I was not fast enough, I was able to check the update by monitoring the PWM pin with a Logic Analyzer. The problem with the basic example, however, is that I need to update the report to aura cyclical ratio, so I went for an example of reading continues writing. The problem I've met; is that I have to switch between reading and writing to make it work. When I do that, either I don't hold write it down long enough and nothing happens, or I get several updates when I switch to reading. Some of these updates don't even match and produce updates to defective upgrades for example; 16000 16000, 16000, 16000, 6000, 600, 60, 16000, 1600, 60, 0, 0, 0, 16000, 60, 0, 0 etc.

  I tried which allows characters of endpoint in the hope that the writing would end at the end and go to reading where he would receive a termination character and wait for me allow writing once again, but nothing helped. I still have to alternate between the two and either get no response on reading several updates of variable accuracy. I tried to remove her allows read/write and their structures of matter in the hope that the loop flow, associated with the characters of endpoint would the case, but then the updates don't register at all. The funny thing is I did a VI like this before with an Arduino and that there not even no need to switch between writing and reading (I'm now using a Board of Freescale FRDM).

  I was also the frequency of timeout errors; Error-1073807339 at VISA Read, reason Possible: VISA Hex 0xBFFF0015. I removed the option to stop the while loop if there is an error so I can run but always pops up an error on the judgment occasionally. Could the problem of synchronization always cause me problems?

  Would appreciate all advice really, I am providing my slightly modified example screws and can provide the code for microcontroller on request, even if it's very simple.

  Thanks in advance, it is
  Yusif Nurizade

  In other words, frankly, a good bad example you according to your code. Also, you have the order of writing and read upside down in your amendment if the instrument requires a command to return something. It should really be using a structure of the event. The structure of the event around a write and read and use a value change event. I have attached a quick change. This mod is still a reading after writing. If necessary, you may have two separate events to write and read.

• Possible timeout in VISA read/write in While loop

  As the title says, I have a while loop that is constantly written followed by reading using VISA read/write.  I'm waiting for buffer correspond to a certain one, which the true value would end the loop.  In this loop, I have an indicator showing how many times he runs. All of this is repeated in another while loop.

  My problem comes the counter arrives at 10, then stops at the "write" command.  Do not know why.  I tried to increase the time-out of the instruments, but nothing has changed.  I added a delay of 10ms in loop, which also has not changed anything.

  For reference, I use a tektronix scope series 3000 of the MDGS and checking its state of relaxation.

  You said chill to read earlier!

  But it is not supposed to have to write it either.  Experimentally, access all VISA nodes, right-click and choose the Mode of synchronous i/o.  Make it synchronous instead of asynchronous.  The watch symbol will disappear from the top right corner.  See if that changes anything.

  What kind of serial port are you using?  What is an integrated in the PC?  A USB to serial port adapter?  Makes the chips on that, Prolific and FTDI?  You can try with a different serial port or a brand of adapter?  A lot of people have had problems with prolific chips.  And I have also heard of people having problems using adapters who had fake chips in them.

• Help? the source volume is read-write and can not be disassembled...

  I use 10.11.5 on an iMac 21.5 ", end of 2009 and I want to restore the OS X 10.11.5 to HD on an external drive but I get this message" Source volume is read = write and cannot be disassembled, so it cannot be copied from block. "  I can find answers do not address El Capitan.  Help would be greatly appreciated.

  .. .Goldie

  You use disk utility's restore feature?

  If the HD has a recovery partition, you can make starting in place of the recovery.

  Or you can use SuperDuper! (the basic version is free and can copy the entire disk, the paid version allows "smart updates", which copies only files that are different, saving time) running on externally to perform the copy.

• Tecra A8 DVD don't read/write DVD-R 1-16 x.

  Using Sonic Record DLA, Tecra A8 DVD don't read/write DVD-R 1-16 x. Ok work on DVD - R 1-8 x and CD DVD - R 1-16 x has tested successfully on the two recent Toshiba Satellite Pro and HP Office. Have updated the Bios, software DVD-RAM and Sonic DLA.

  Hey,.

  What exactly do you mean? This means that you can t burn DVD-r with 16 x speed?
  In this case, you should check the specifications of your CD/DVD drive. Not all models support this speed of combustion. In addition, I recommend using 8 x only, he speed will give you a better quality of the burned data/average.

  You must also use different types of media. I believe that your other computers have different drives in order to test different mediums. I have a good experience with Verbatim DVD-R.

• DVD recorder is not read/write discs DVD-RAM on Satellite A200-1GH

  Hello!!

  I have the problem as the topic - my DVD drive is not read/write DVD-RAM discs (recorder: HL-DT-ST DVDRAM GSA-T20N). Unfortunately, there is no any drivers (more recent than I've got) for this recorder on the Toshiba, not even site on LG or Microsoft. What should I do?

  Greetings

  Hello

  To be honest, it's quite strange. If the laptop is preinstalled with recovery image, it should work. I tested it on my laptop 5 minutes ago and it works. The DVD-RAM disc is readable and different documents can be saved on the disk too.

  Do you use your own installation of OS, or you still have some factory settings?

• Carpet * a UJ-830 cannot read/write DVDs on Equium L10

  Hi, I have a laptop Equium L10. My DVD RAM mast * a UJ 830 cannot read/write to DVD discs. But it can read and write CDs.
  I have installed the latest driver but no luck. Any suggestion will be appreciated.

  This problem appears since day one?

  I ask because it looks like a hardware malfunction, to me it seems that the lens can not calibrate properly and that's why the drive can read and write DVDs.
  What burning software do you use?
  For the most part a burning like Nero program provides an error message if the burning process failed

• Enter a share with read rights and have read/write rights

  I have a folder with my photos on my Mac. In this folder, I have all my photos in subfolders and will add new pictures once I created the share. I want to make them accessible to my family there own PC/Mac. But only with READ ONLY. My problem is that a user (account to share on my Mac) with reading rights can access my shared with read/write rights.

  I have my Mac with 10.11.2 the following users/groups:

  • (Jens) My Admin account
  • (Erika) Account sharing
  • (Family) A group

  Group of members of the family are:

  • Jens
  • Erika

  My folder permissions to "/ Volumes/ExtHD/Bilder" are:

  • Family: read
  • Jens: Read/write
  • everyone: read

  I enabled file sharing in the system settings and the 'Pictures' folder added to the share list.

  Now I go to another Mac with Yosemite, go to network in the Finder, select the computer with the share, connect to the "Erika" and open the folder "pictures". I can generate records or files, delete files, so I have read/write rights. Why?

  Finder don't show me no option 'Erika' should have rights to write to this folder. Why is she able to delete files?

  If get you information on the drive, it is the checkbox ignore verified property?

  What is the format of the disc?

• Control of read/write of FPGA Interface

  I need help on control of FPGA read/write Interface. I would like to connect data TCP Read (String) directly to VI FPGA Read, but the entrance is an FXP... How can I do this?

  Then change your FPGA control to be a byte (U8).  On the side of your host, use the array of strings of bytes, then Index Array to get the specific byte you want to write on the FPGA.

• How to read/write tdms 2.0 files with the TDM C DLL?

  Hello

  How to read/write tdms 2.0 files with the TDM C DLL?

  How consequently the datas in interlaced with the TDM C DLL mode?

  Thank you

  Confirmation: TDM C DLL always wrote the file in TDMS version 2.0.

• How to add more variables to a read/write control?

  

  See how the read/write control is connected to global variables? I want to add more variables, I created the globals (some are listed in the table above), but as you can see that they are not available in the read/write control. How can I add them? I also tried to create a new read/write control, but as you can see that didn't help.

  Any help would be appreciated.

  Hi count3r5tr1ke,

  It seems that you are referencing a particular bitfile in open FPGA reference. I think that even when you save your FPGA VI, VI real time still referencing an older bitfile. Have you tried re - compile and referring to the new bitfile once finished compiling? A sure way to make sure that you have the most up-to-date bitfile is to check the VI option when you right-click on the FPGA Open reference and select Configure the reference open FPGA. When this option is checked, if you make changes to the FPGA code, it will force you to re - compile the FPGA VI before you reference it on the real-time side.

  Best regards,

• FPGA read/write does not not in cRIO-9073

  Hello.

  I'm stuck with a problem in the use of the FPGA Read/Write control please suggest a solution.

  I use cRIO 9073 and I'm trying to place an order ON / OFF of GUI-> RT-> FPGA host. I use a shared variable of the network to transmit the control GUI form to host RT and I use read/write control to FPGA. I also put a Boolean flag in the FPGA VI to control if the control is transferred to the FPGA.

  When I toggle the button in the GUI, I see the same change in the host of RT (shown as 16 probe in attachment 1). However the FPGA indicator (indicated as probe 19) remains the default false state. The FPGA VI is on attachment 2.

  Thank you

  Guilhem

  Your FPGA only reads the control once before entering the loop.  If you want to read control permanently, you must put it inside the loop.

• Big against little endian - how will this affect my Performance of read/write PDM

  Hello

  I read that LABVIEW intrinsically stores data in big endian format, but the read/write of the VIs DDHN have the little-endian as a default. Simply, you wonder what is recommended for these screws TDMS and if these options affect writing / reading performance somehow?

  Hello

  The endian of data does not affect the performance of the read/write of the DDHN screw the primacy of the format is just down to personal preference when working low level with data.

  If you do not read or write the bits in a personalized way, then I would recommend leaving the endian as it is by default when reading or writing. Otherwise, use any kind you like or prefer to go through.