How to capture when visa resource dropdown list control is filled

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• How to pass the Visa Resource Name parameter to labview dll in labwindows/cvi

  Hello world

  I build a dll of labview, the prototype is: double getchannelpower (double f, uintptr_t * VISAResourceName);

  I don't know how to go from VISAResourceName to this function.

  Is it related to the ViPSession paremeter in function viOpen(REES ViSession, rn ViRsrc, ViAccessMode am, ViUInt32 ti,ViPSession vi)?

  BRs,

  lotusky

  Hey, guys:

  I figured out how to pass the parameter.

  In labview, you must replace the control of visa with string control. In this way, the generated dll function at the entrance of the string type.

  I hope this will help others!

  lotusky

• How can I save visa resource name in windows registry, and then load it again?

  
  
  

• How a cRIO can access remote systems VISA resources?

  I have a NI 9871 RS485 module on an ethernet 9148 RIO.

  I have also a laptop and a cRIO 9073.

  I can access each of the 9871 serial ports on the computer but not the 9073.

  When you try to access it from the cRIO, I get error:-1073807192, VISA: (Hex 0xBFFF00A8) is denied access to the resource or to the remote machine. This is due to the lack of sufficient privileges for the current user or the machine.

  How the cRIO can access the serial ports of the module 9871 on the ethernetRIO?

  Or how a remote access cRIO visa resources?

  Or how a cRIO can have sufficient privileges to access remote resources from visa?

  Thank you for your help.

  LabVIEW 2010 & VISA 5.1 on pc

  NOR-RIO 4.0 and 5.1 VISA & NI 9871 SERIES scan engine support on cRIO and eRIO

  Hi Woss,

  It is possible that your RIO Ethernet has some parameters of active access which is to prohibit the connection to serial ports.  You can change these settings in a position and Automation Explorer (MAX) for your device by going to the device under remote systems, expanding the category of software under it and choosing NI-VISA.  There will be a tab in the right pane of MAX called Options of VISA.  In this tab, select Server VISA > security to access these settings.

  From there, you should be able to add the IP address of the RIO device that needs to access the VISA on the RIO Ethernet server.  Once you have changed these settings, just click on register at the top of the window and allow the unit to restart.  Let me know if that helps!

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• How to create names for VISA resources

  Create a VI to interface with a Tektronix Oscilloscope. Tek drivers all use and transmit handles instrument VISA Resource Name to the format.

  Yesterday, I simply plugged a text string with the characters of text on the Tek pilot and it's happy. String = "GPIB::12:INSTR".

  Today, LabVIEW dislikes this incompatibility of format, and I get an error of the pilot.

  My format of the string looks OK, but I have to do something wrong. None of the tools VISA simplty interrogate the device for his VISA resource name. How to do it?

  Thank you.

  
  

• Resource VISA does not list options

  I have a .VI which works very well on my computer windows 7. When I move the arduino on my computer windows 8, the VISA resource for the icon of init Arduino does not recognize the COM ports. This option is refresh. It shows on my devices like Arduino Uno (COM5), but not seen on the control or the constant.   I don't think that this is a specific problem of the Arduino. Any ideas or suggestions?   Thank you.

  

  Did you install NI-VISA? What is the port appear in MAX?

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• How to limit the number of items listed when hover over Menu of Control Panel

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  Hey there,

  I want to limit the amount of results when I hover over the control panel in the start menu, when I displayed it as a menu...

  Currently, I have about 25-30 items displayed there and it takes about 2 to 4 seconds to load the menu, I would just have to charge about 10 Articles and give me the ability to scroll the rest of them. Any help would be appreciated!

  Hi Berthier, Chad

  Thanks for choosing Microsoft Community!

  Unfortunately, there no option to perform this task.

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• Find VISA resources

  I have trouble finding VISA resources properly. I have no problem detection instruments that are connected on the GPIB, but after that they have detected once LabVIEW is convinced that they are there for ever more, even if I unplug and disconnect the device! The only way that the list of the connected instruments is reset completely out LabVIEW and restart it. Why is this?

  I'm using LabVIEW 6.1 (but who can not make a difference) and I attach a VI with two ways to detect if one of the four possible instruments are connected. The Subvi is used to give a command to one of the instrument, and it is able to return an error if the instrument is not connected, regardless of the situation. How can it detect the instrument as expected, but the other methods not?

  In this VI, I need detect how much, if any, and that out of four possible instruments are connected. Simple, but amazingly difficult!

  Any help please?

  James

  Well, now that you say is starting to make a little more sense. I misunderstood what you were asking before.

  Jeff Bohrer wrote: what is the selection if you look at "tools > Options > various... > automatically close VISA sessions?

  Help: "automatically close your left VISA open sessions by the application when the first level VI becomes idle. This check box is cleared by default. "This was added at some point (don't remember when), and the default value is True. It caused a lot of sorrow and complaining from users (I was a), so NEITHER changed the default value false.

  As Dennis has pointed out, there is a distinction between the resource and the instrument. When you perform an initial analysis resources will be created. There is no mechanism that automatically detects that an instrument is no longer there. In fact, when you scan for instruments of MAX, she sends * IDN? queries to find instruments. So, you must check for the presence of an instrument by actually trying to talk to her.

• driver problem Keithley 2700: VISA resource not found

  I use Keithley 2700 DMM with two 7702 card scanner with card PCI GPIB Keithley and GPIB cable connecting the DMM and the PC.

  I downloaded the driver of the Keithley 2700 project style and loaded on my PC base.

  I created an executable file for the process of scanning running in another PC (client).

  I installed on the client, the runtime of LV 2011, Keithley GPIB PCI card driver (appears in the Manager of devices with errors), the VISA RT 5.0 engine.

  Yet when I get the drop down menu to contact VISA, I can only find the COM ports. The GPIB0::X:INSTR cound not be found.

  Please help me how I can make this resource name VISA in the client computer.

  Thank you in advance.

  Dear Dennis

  We had card GPIB Keithley stock and where it is used.

  The problem asked above, and the solution has been found.

  Solution: in the Keithley 2700 GPIB option turned OFF. I allowed him and

  the system has worked successfully.

  Thank you for your support.

• How to capture a screenshot of the program rather than the entire screen?

  You may need to download a photo in a post to help illustrate the question or provide more information, but do not know how to capture a region or a specific program to do this.

  The following steps were taken here, but modified to capture a program open instead of the entire screen.

  1. When you view the site or program that you're having trouble with, press Alt + Ctrl + PrtScrn (Print Screen) , usually located at the top right of your keyboard.
  2. Open Microsoft Paint by using the start menu, then programs, accessories and finally choose paint.  For Windows 8, search for painting of the splash screen.
  3. Once you have opened the paint, select 'Edit' from the main menu and click "Paste."  CTRL + V work as well.
  4. Now that your screenshot appears in the paint program, choose 'File' in the main menu and click on "Save as".
  5. In the drop down at the top of the menu "save under", choose to save the file to your desktop or your favorite place.
  6. Name your file "adsense.jpg" or something you prefer, choose "JPEG" format in the drop-down list "Save as type", then click Save.

  It should result in a screenshot of the specific program when selected.  It must be the active window or the last window that was clicked on.

  Once you have the picture, simply click on the photo icon in your replay to browse and download.

  This should help with areas that are smaller than the whole screen, making this important area more visible and easier to view via the forums.

  I hope this information helps.