Virtual COM port blocking labVIEW

Similar Questions

• How do troubleshoot you a USB virtual COM port?

  Object

  Send orders of Labview to an Arduino board using the Advanced Serial write and Read.VI.

  The problem is that no orders are received by the Arduino.

  However, I can use the Serial Monitor built into the Arduino IDE to send commands to the Arduino and get the required result.

  I checked baud rate, the designation of COM port and the command is a simple as string 600,0.  The VI shows no error message.

  So, I'm looking for suggestions on how to troubleshoot a USB virtual COM port.

  Howard

  
  

• How can I create a USB Virtual COM Port

  Windows XP Professional / SP3 / 2002 Version

  How do I create a virtual COM Port to USB, so I can run software applications of a Bus USB flash Drive?
  The reason why I am eager to do it, is because I use an audio sequencer and it requires 1 GB of free disk space and at least 1 GB of RAM is recommended. My machine has 0.5 GB of RAM and a total of 6.55 GB of FREE space. My machine has a 256 MB RAM module and I bought another 256 MB RAM module. The manufacturer said that 512 MB of RAM is the maximum that can have my camera.
  My goal is to buy a 4 GB Flash drive and use it to add RAM on my machine. I am also wanting to be able to run software applications that are installed in the USB Flash drive.
  My basic goal is to install the DAW in the USB Flash drive and work with the program that is in the USB Flash drive, and I hope that will release of enough memory on my laptop.

  Hello

  Unfortunately, you cannot use a USB flash as a substitute for the RAM drive.

  Similar topics as an example with the info:

  http://answers.Microsoft.com/en-us/Windows/Forum/windows_xp-hardware/can-i-use-a-USB-flash-drive/70cf81fa-D113-4485-8305-c030665eeac0

  http://answers.Microsoft.com/en-us/Windows/Forum/windows_xp-hardware/can-a-USB-flash-drive-be-used-as-an-external-RAM/d711a70e-6878-4552-933C-423fa04fb222

• How to create a Virtual Com Port in Windows 7 for Palm HotSync

  I've just updated wo Windows 7 Pro 64 bit.  Because Palm does not support USB synchronization under a 64-bit system, it tells me that I need to create a virtual com port for my bluetooth device to synchronize.  I can't understand how to create this port under Windows 7.

  Hi Sonmox,

  Welcome to the Microsoft Answers site!

  In the Sub in view of the link you need to download the Palm Desktop and HotSync Manager. This software allows you to synchronize your device Palm with your computer, for your info is backed up and easily editable on your computer.

  Visit the following is given link of Palm and configure your Bluetooth device.

  http://KB.Palm.com/wps/portal/KB/common/article/49229_en.html

  When you set up your Palm device to synchronize using Bluetooth technology, you create a 'Bluetooth partnership' between your devices your computer (also known as "pair" or "trusted device"). This allows you to synchronize your device wireless and your computer have to authenticate each other, every time that you synchronize.

  Follow the steps in the document to sync your Bluetooth device.

  Hope this information is useful.

  Amrita M

  Microsoft Answers Support Engineer
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Virtual Com ports never get reused after UN-installing of software that use

  I have install and uninstall the bluetooth drivers (Microsoft, broadcom and bluesoliel) in order to obtain different devices to work. When I started this exercise, used by bluetooth comm ports were low numbers (com 4 and 5 for example). If I uninstall the bluetooth drivers, then reinstall the or some other driver, the com port numbers used become com 6 and com 7).  Old ports com can never get reused and there seems to be any place where I can find them (and I hope that free them from their State of limbo).

  Now that I've got things nearby work properly, I get to com 25.

  This also happens with the bluetooth drivers not as my GPS through a series of USB converter. or my palm for synchronization software.

  That is to say the problem is not just with bluetooth. It's with any program that uses a serial port.

  I'm afraid I might run out of com ports, and perhaps these unused com ports consume resources (are they built during startup?)     Hmmmm... Looks like I ran out of space... Al

  Hi again
  Well, I made a variation on your theme
  1 turned on or plugged in devices that could use a virtual serial port - 3 of them
  com 26 2 with one of them, I have attributed it to 25, then 24, etc. all the way up to 3 comm
  That unlocks (disabled the use in indication) for all of the unused ports.

  reassigned the 2 remaining ports to com 4 and 5

  Thanks for the help
  Al

• USB/Virtual COM port Communication problem with ESP301/LabWindows/CVI

  Hi all

  I have gone through different threads posted in this forum for similar issues and all tried, but nothing helped.

  I'm trying to communicate to the ESP 301 training monitor via a USB port configured as a serial COM port using a CR. Have it ' command is to get the version of the controller. The "write" "ComWrt" command works fine but the read command throws and error ("-99 operation e/s timed out"). I tried all the suggessions; with delays etc... who has explained (resolved by Mr. RobertoBozzolo) in the thread posted here, which explains an issue similar to that of the mine, but the help couln t.

  The code is attached.

  I am using 2012 LabWindows/Windows7 64 bit multi-hearts

  int Get_Version () {}

  comport = 3;

  BaudRate = 9600;

  parity = 0;

  DataBits = 8;

  StopBits = 1;

  inputq = 512;

  outputq = 512;

  ctsmode = 1;

  xMode = - 1;

  Timeout = 5.0;

  com_status = 1;

  char comstring [6];

  DeviceName [] = "COM3".

  Int State = 0;

  char * error;

  int bytes_written = 0;

  char Cmnd_String [50] = "";

  char Read_String [512] = "";

  strcat (Cmnd_String, "ve?")

  strcat (Cmnd_String, '\r');  Tried to 0x0d
  strcat (Cmnd_String, '\0');

  length = strlen (Cmnd_String);

  assert (Cmnd_String [length] == you? \r\0'); Tried Cmnd_String [50] = ' VE? \r\0 ".

  DisableBreakOnLibraryErrors ();

  RS232Error = OpenComConfig (comport, devicename, baudrate, parity, stop bits, inputq, and outputq data bits) ;// tried ouputq = - 1 too

  EnableBreakOnLibraryErrors ();

  If (RS232Error == 0) {}

  com_status = SetCTSMode (comport, LWRS_HWHANDSHAKE_CTS_RTS_DTR);

  MessagePopup ("Comport verified',"CTS Mode works very well");

  com_status = SetComTime (comport, timeout);

  }

  bytes_written = ComWrt (3, Cmnd_String, (Cmnd_String) StringLength);

  If (GetOutQLen (3)! = strlen (Cmnd_String))
  ComWrt (3, Cmnd_String, strlen (Cmnd_String));
    
  status = ReturnRS232Err ();      The status is 0
  error = GetRS232ErrorString (status); / / error number

  Delay (5.0); / / trying to add the time up to 20.0

  GetInQLen (3); Returns 0

  ComRdTerm (3, Read_String, 512, 13); Read from inputQ

  status = ReturnRS232Err ();               Status to return the error code '-99 '.
  error = GetRS232ErrorString (status); Error message "e/s timed Opération" out

  return the situation;

  }

  Can anyone suggest where I am doing wrong?

  Thanking you in advance.

  Another thing you should check is baud rate.  The ESP301 by USB is expected than the baud rate to 921600.  The function for OpenComConfig() group implies that it does not support this baud rate setting, but it seems to work perfectly.

• Virtual COM port do not get detected using labVIEW Installer

  
  

  Sorry for the thread...

  The windows device manager sees a USB port.

  The manufacturer's website indicates that for windows XP it didn't need a driver, windows use its own driver.

  I try older driver from the manufacturer, but I have the same result: the windows device manager sees a USB port.

  1. yes I have tried but it still sees a USB port.

  2. drivers from the manufacturer has not solved the problem.

  3. I will ask to help the manufacturer.

  Thank you for your help Ravens Fan,

  Concerning

• read com ports with command-line through labview?

  I'm trying to find a way to get a specific com port through the command via the command exec system prompt in labview. Is it possible to get the list of com port connections just like one you see in Device Manager where he will give the list the name of the device connected to a certain com port? I want to be able to automatically find the port com for a specific device.

  because it is a virtual com port that gets set up and I tried the vi to find resources VISA and it did not work. However, funny enough, just after I submitted this post, I found the solution to my problem. If you use exec system and type this command in the standard input:

  WMIC path Win32_SerialPort

  This will bring up a list of all com ports connected and very fast too. From there I can analyze the information I want and widdle down to the com of the desired usb device port.

  Maybe this can help someone on the road.

• Windows XP does not allow applications to use the virtual serial (COM) Ports

  Operating system: Windows XP Professional version 2002 Service Pack 3

  I want to use some applications to control virtual serial (COM) on a device of PEARL IOLAN STS8 D/TruePort ports in Windows XP Professional SP3. When I configure the IOLAN/TruePort I see the COM ports in the Windows Device Manager and I am able to configure my applications to use ports.  However, when applications try to open the serial ports, I get an error saying that the port is already in use or does not exist.

  I tried various alternatives to remove/re-add the ports 'in use' in Windows before you configure IOLAN/TruePort and applications. This (sometimes) allows me to use the ports but if the PC is turned off later and rebooted the problem reappears.

  Is there a reliable way to create and use virtual COM ports in Windows XP?

  The IOLAN/TruePort Pearl versions are:

  V4.3 Device Manager
  Firmware TruePort 6.4

  Hello

   

  The question you posted would be better suited in the TechNet Forums. I would recommend posting your query in the TechNet Forums.

  http://social.technet.Microsoft.com/forums/en-us/itproxpsp/threads

   

  I hope this helps!

• HP Envy X 2 cannot create com port error virtual 577

  Hi all

  Reinstalled Windows 8 32-bit HP ENVY X 2 and updated all drivers (again).

  Try to create the virtual com port with two different Xport and FransonGPSGate programs.

  These programs normally create a virtual Com Port that can be used by e.g. two different programs of maritime navigation at the same time.

  Xport responds: error code error Windows Xport pilot 577 from

  Franson GPSgate responds: unable to create virtual serial ports

  What is the solution for this problem?

  Thanks in advance for your answer!

  Learned a lot the last few weeks on Windows 8.

  I will guide you to acquire the same knowledge for Xport and fully operational Maxsea

  First read: http://www.pcworld.com/article/2027593/windows-8-put-its-hidden-security-features-to-work-.html

  You probably missed it but read what follows:

  "Included in the UEFI is a feature called Secure Boot, which avoids unauthorized operating systems and malicious software from running at startup."

  "Windows, you can type msinfo32 in the start menu search box or invites him to run it to find out the version of the BIOS.

  Within windows 8, I saw:

  -A start secure ACER (old machine): unsupported

  -To a HP Envy X 2 (new machine) Secure Boot: enabled.

  Secure boot disabled in Envy of HP X 2 and

  Xport and my older prog navigation are fully operational new.

  Good wind,

  -No.

• the PCIe-1427 virtual comm port

  The utility of the seller of the SBF - 200 camera allows users to change the time rate and exposure of the image using a specified com port. The PCIe-1427 uses a virtual com port via camera link, but does not reveal the number of users or WINDOWS. Anyone know what it is?

  Attached is a file zipped from the camera to operate the camera Focalplane of Santa Barbara (SBF-200), which has been tested with the NI PCIe-1427 frame grabber Board and LabVIEW 8.2. Assistance of Santa Barbara Focalplane and spectral science, Inc. support are greatly appreciated.

• Open the com port - need to know how to start

  I'm trying to collect data for I can use it for analysis, I'm not sure where to start. I need to open a virtual com port and while the program to read the bytes. The data package is 1 651 bytes long.

  Thank you

  Andrea

  I can echo the two comments above!
  It is very easy to communication series in labVIEW, as we have pallets available.

  It works just like a file type handling (open, read, write and close)
  Open and configure with port com, baud rate, parity etc...
  Write on specific order before the reading of specific command.
  Read the provision of the number of bytes of data that you wait and close once your call is ended.
  It is always better to create a communication driver with the architecture of State machine with (open, write, read, relatives) options where the shift register is used to conserve resources reference

  Check with examples on the communication to know the basics of the communication protocol

• Satellite A30: Can not find the COM ports when trying to query the modem

  Hello.
  I have satellite A30 and I reinstall windows xp at home, but I can't find any com port whenever I try to query the modem the display hardware confilct, but in Device Manager no sign of error/confilct, I did everything what I can.
  Add the port,
  Add more then 1 port
  disable the printer port
  change the printer port
  Reinstall derver modem,
  In short, I've done everything I can. its always show (! yellow) mark.if I add the port and if I remove the port and there is no sign of error.
  If someone help me to solve this problem a little,
  regared.
  MGK.

  Post edited by: mghouskhan

  The modem uses a virtual com port. It s not a real port.
  I wonder why it usually happens after the installation of the new operating system, you must install drivers Toshiba together in the right order
  Installing the chipset utility is important

  The modem driver should do the work and you n t need to activate com ports
  Please choose the right side of the page of the Toshiba driver modem driver after installing the OS correctly. I think that's the key

• virtual serial port

  I have a portable satellite wih only USB ports, now I have a GPS18USB but the Route66 programm wil only work with a gps series. I have now that it is possible to create a virtual serial port that can help me and tell me how
  email please at [email protected]

  Hello Hans,.

  I had searched the internet on installation of a virtual COM port, but I only find solutions based manufacturer. So I think that the driver or the software that generates the virtual COM port is based on the product that you (in your case, the gps system).

  The manufacuring company request a solution!

  But if they don't have a solution, I found a link on the internet that might help you! But if you want to test I will assume no responsibility for the consequences such as loss of data after a system crash.

  http://www.ftdichip.com/FTWinDriver.htm

  Good luck!

  Sam

• Assignment of a USB port to a COM Port.

  I am running Windows XP Professional I have software that uses COM ports in the settings.  You can use my USB devices.  My computer only has USB ports. How can I redirect say COM 5 to a USB port or a device?  Can I connect a USB device to a specific COM port?  I know that if I use a USB series adapter it gives me a virtual com port is it possible to assign USB to a virtual com port without the adapter?

  As I pointed to a poster earlier in this thread, there is no way to make a USB port to simulate a COM port in the software.  Necessary pins simply do not exist.  You need a USB adaptor to series which is located practically in the world of computers and their accessories are sold.