GPIB Communication with Lakeshore VSM

Hello, I am trying to communicate via GPIB to a Lakeshore 7300 VSM. I am using NI-VISA to send commands for testing communication in real time. Unfortunately, none of the commands I send are working. I have tried querying with *IDN?, but the response always times out. Any help or documents on how to use GPIB to communicate with this device would be very much appreciated. Also, if someone could provide an example command with exact syntax to use in VISA for testing purposes, that would be very helpful as well. Thank you in advance!

You just need to concatinate an End Of Line constant. In the example below, notice that the botton string constant has the display set to '\ codes'
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Attachments:
Termination Character.png ‏10 KB

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GPIB communication with GPIB (NI PCMCIA-GPIB)card in Visual Basic

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Hello,
Is the PCMCIA card recognized by the NI-488.2 driver on your laptop? Are you able to communicate from Measurement and Automation with your instrument? What do you mean it does not recognize the sendIFC command? Does Visual Basic give you a runtime or a compile time error? Are you using the latest version of the driver? (Usually 2.1 unless you're on 95 or NT with your card)
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Let me know if you need more assistance by replying here.
Scott B.
Applications Engineer
National Instruments

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TG,
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NI Spy
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Errors communicating with my GPIB device in C++

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Thanks
EDIT: The device I am communicating with: S380 Dual Channel Optometer (UDT Instruments)
via: GPIB-USB-HS
using drivers (header file etc.) from May/Jun 2014

If you installed NI-488.2, it will install sample programs. In Windows 8.1 C:\Users\Public\Documents\National Instruments\NI-488.2\Examples

Need urgent help with communicating with the HP 4155B analyser with Labview

i folks,
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Kind regards
Rob

Hi,
Thanks for the help. I now have communication with the instrument.
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A.S. Thank you for your reply. I used the Keithley 238 Device Errors VI to try and get more info., but it still returned the same thing. I had looked at EDVR(0), but I couldn't find any place where the name could have been changed. Although, I am using an Event loop, so I will double check and make sure this does not reset a value that I set somewhere else.
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Does any of this seem to make sense? The thing that I don't understand is that I am sure there are people that must have used these VIs from Keithley without any issues, so it seems weird that they would behave differently on my machine, as far as tim
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GPIB communications are lost after windows7 sleep

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When re-booted, everything works fine until the next sleep.
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Dekay wrote:
If I leave a Labview program running long enough for Windows 7 to enter sleep mode,
This has happened on several computers, all using the same version of Windows 7. It can be avoided by changing the sleep mode to 'never'. The program being run is an executable built on a pc running XP, and LV8.5.
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Communication with HP4194

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If you are using a National Instruments GPIB board, then you should have a program called the Interactive Control on your computer (ibic.exe) that comes with the driver.
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JavaScript GPIB Communication using a COM ActiveXObject

Is there a way to preform GPIB communication using JavaScript? Perhaps by creating an "NiVisaCom" object?
There are about 20 different progid's for the NI VISA VXIPNP dll registered on my computer after installing the GPIB drivers, however all of these seem to return an empty object when created using "new ActiveXObject()"
Looking at the documentation I would think this would work:
gpib = new ActiveXObject("NiVisaCom.NIGpibIntfc");
gpib.viOpenDefaultRM(session);
The first line "works" but returns an empty object. The second line throws an error.
Another route would be to create an html page with an <object> tag with the CLSID assigned to match the progid, but this has not worked for me either.
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EE_Steve wrote:
I have not read any documentation that suggests that this is possible. Perhaps my initial question was not well formed. I am hoping that someone can point me to documentation, or otherwise explain, how to connect to a GPIB COM object using JavaScript.
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http://forums.ni.com/t5/Instrument-Control-GPIB-Serial/Is-there-an-OCX-for-accessing-the-GPIB-interf...

I'm using the cw gpib control with several

intruments. Is there a way to find the
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You have to make calls to the GPIB API to do bus commands like FindLstn, etc. The ActiveX control is designed for communicating with GPIB devices, not managing the GPIB bus. There is an example that ships with the NI-488.2 driver for Visual Basic called Query4882 that can show you how to use FindLstn from the driver API.
Best Regards,
Chris Matthews
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Hello-
The GPIB analyzer software does have a triggering menu available. However, there is currently no API for the analyzer available. However, it might be possible to tap the EOI line with a second GPIB cable. Then, a DAQ card can monitor the progress of the GPIB communication. There may be some easier software solutions as well. Try using Datasocket if it is necessary to have interprocess or intermachine communication. There are plenty of Datasocket examples in CVI and LabVIEW.
Randy Solomonson
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Installation gpib problems with windows xp

Will not pass the test Interfaces Squentially Verified..No hardware conflicts..System Device manager indicates that this device is working properly. Computer is running a AMD 1700XP processor..

Hi Perk,
Often times this happens when there is an instrument connected to the GPIB device when the test is run. You should be able to remove the cable and pass the test. I would recommend just moving on to communication with the device. Use scan for instruments or IBIC to verify that you care able to talk with your instrument.
Best Regards,
Aaron K.
Application Engineer
National Instruments

Sir i am using datasocket read ,i am communicating with java but my problem is that bcz im using while loop to see if value has changed my labview consumes all the processors time ,sir i want a event like thing so that while loop is not in continuous loop

sir i have given lot of effort but i am not able to solve my problem either with notifiers or with occurence fn,probably i do not know how to use these synchronisation tools.

sir i am using datasocket read ,i am communicating with java but my problem is that bcz im using while loop to see if value has changed my labview consumes all the processors time ,sir i want a event like thing so that while loop is not in continuous loopHi Sam,
I want to pass along a couple of tips that will get you more and better response on this list.
1) There is an un-written rule that says more "stars" is better than just one star. Giving a one star rating will probably eliminate that responder from individuals that are willing to anser your question.
2) If someone gives you an answer that meets your needs, reply to that answer and say that it worked.
3) If someone suggests that you look at an example, DO IT! LV comes with a wonderful set of examples that demonstate almost all of the core functionality of LV. Familiarity with all of the LV examples will get you through about 80% of the Certified LabVIEW Developer exam.
4) If you have a question first search the examples for something tha
t may help you. If you can not find an example that is exactly what you want, find one that is close and post a question along the lines of "I want to do something similar to example X, how can I modify it to do Y".
5) Some of the greatest LabVIEW minds offer there services and advice for free on this exchange. If you treat them good, they can get you through almost every challenge that can be encountered in LV.
6) If English is not your native language, post your question in the language you favor. There is probably someone around that can help. "We're big, we're bad, we're international!"
Trying to help,
Welcome to the forum!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

I get an error message when trying to install windows 7 on my macbook pro. The message says "windows has encountered a problem communicating with a device connected to your computer. I don't have anything connected to my computer. How do I fix this?

I'm trying to install windows 7 on my macbook pro. I went through the process of bootcamp telling it to install windows 7. Once the windows boot manager started an error message came up. The error message says " windows has encountered a problem communicating with a device connected to your computer. I don't have a usb connected to my computer. I am using windows 7 professional install disc. I can't figure out what i am doing wrong. The same message keeps coming up over and over. Am I doing something wrong or is it something else?

Well, shucks, i just spent almost 30 minutes trying to find your model user guide to explain it better, I guess they never got around to making it.....
I would just borrow another Windows disk and try installing it again and if it does it again then you might take it to an Apple Store and see if one of the "Genius' " can figure it out.
Make sure your internet is enabled and click on your blank desktop and at the top of your screen is a Help menu option, enter PRAM and it should give you a list of things relating to Pram. It may take a few seconds to list anything as it has to connect to Apples severs first. It should list the things you may have to fill back in when your done.
"P-ram" stores some common information that is used in the background, your date, time, startup disk, etc, that you don't have to re-fill when you restart, it's a little different for each computer.

"The software required for communicating with the iPod is not installed..."

I realize my explanation of my problem is long-winded, so if you want a shortened version, here it is:
I've followed all the instructions trying nearly everything, and no matter what I do, iTunes gives me the error saying: "The software required for communicating with the iPod is not installed correctly. Please reinstall iTunes to install the iPod's software." My G5 iPod (60GB) works on two other computers (both without any music on them), so I assume there something wrong with my computer and not the iPod itself.
Now for the long-winded story of the last eight hours of my life...
I just got the Generation-5 iPod Video (60GB) a today and I'm having problems already. I followed the instructions and installed the iPod software and then plugged in my iPod (iTunes has been on my computer for a while now). I was expecting iTunes to open after plugging in the iPod, but my device manager only detected and installed "a new device". I manually opened iTunes and got an error saying: "The software required for communicating with the iPod is not installed correctly. Please reinstall iTunes to install the iPod's software."
After re-installing the iPod software and iTunes, and restarting my computer countless times, I came looking for help here. I found this page, which seemed to outline my problem exactly. My computer recognizes the iPod as a drive, but iTunes won't have anything to do with it. I have all the symptoms outlined in the heading, so I hoped to solve my problem there. I followed the instructions step-by-step, and after the final restart, I open iTunes to get the same exact error message.
I decided to determine whether there was a problem with my iPod or if it was my computer. I plugged my iPod into my uncles's powerbook, and got to the point where I can name and configure my iPod. I expected it to work flawlessly on a Mac (which it did) but there is no way for me to continue using a Mac (after tomorrow) for my iPod. This formatted the iPod for a Mac, so I went to another (different from the original) Windows computer, clean of any iTunes and iPod software, and followed the instructions exactly as they're supposed to be followed. After the installations, I plugged in my iPod, and although iTunes didn't open, I was able to format back to Windows and name my iPod (a step in the right direction). I should note that my (anti-iPod) computer is a Windows XP Pro, and the working one is Windows XP Home Edition. This was all well and good, until I remembered there was no music on this computer. So my iPod is completely working there, but there isn't anything I can do with it.
Next, I came back here and browsed around the discussion boards, hoping to find somebody with a similar problem to mine. There seems to be alot of errors concerning iTunes not recognizing the iPod, but none of the solutions I tried worked for me, including changing the drive letter. I get the "iPod Service Error" while trying to restore to factory settings through iPod updater.
Of course, I could transfer all 32GB of music from one computer to another, but the second (working) computer isn't mine and I won't have access to it in a couple months. It would be most convenient if I could get my iPod working on my own computer. Any help would be appreciated, especially from somebody who has solved this problem or know how to solve this problem.
P.S.
Here are some other minor details that my be important, but I didn't feel they were worth including.
- My brother has his iPod mini set up on my computer, under a different user login. He gets the same error once in a while, but re-installing iTunes always solves the problem for him. I had him try solving my problem his way, but nothing worked for him either.
- My computer is an AMD Athlon 64 Processor 3200+, 512MB RAM with Windows XP Pro SP2 installed. My internal hard drive is partitioned, using the letters C, D and H (C being my system files, D used for recovery files and H for my applications and games). My E drive is used as a DVD/CD-ROM Drive, and drives F and G are reserved for virtual drives (none have been running during this entire ordeal). My external hard drive uses the letter I, and I manually set my iPod to use the letter J (I've never used 'J' for anything else before).
- Yes, I have downloaded and installed the latest versions of iTunes and the iPod software.
- I'm assuming there is a problem with my computer and not my iPod, since it worked on both other computers I tried. I'm hoping it's as simple as changing a registry file or cleaning out (yet another) temp directory.

Solution to "Software required for communicating with the iPod is not installed"!
I battled this same problem for about 5 hours. Going through re-installations, the "5 R's", all these discussion boards. Nothing worked.
The problem is that iPodService was repeatedly crashing after minute or so. You can verify this by hitting Ctrl-Alt-Delete and noting that iPodService is missing from the process list (sort by image name), or by right-clicking on My Computer and selecting "Manage", then going to Services and checking out the IPodService service - if it gives you the option to "Start", then it's not running.
Here is what worked.
1. De-install iTunes and iPod (if you have the updater installed) completely by going to Start --> Control Panel --> Add/Remove Programs. Also delete the C:\Program Files\iTunes and c:\Progam Files\iPod\bin directories. (Don't worry, this doesn't affect your saved music files.)
2. Log in as an Administrator
3. Go into the registry (note this is dangerous - you should be careful) and remove the iPod entries that the uninstaller misses.
3.1 Go to Start menu --> Run.
3.2 Type in "regedit".
3.3 Go to HKEYCLASSESROOT --> IPodService.iPodManager.
There are two keys here, iPodManager and iPodManager.1. In my case, I did not have permission to view either of these. I think this is the root cause of the problem. I think the installer can't properly update these because it doesn't have permission. So you need to change the permissions:
3.4 Right-click on IPodService.IPodManager
3.4.1 Select "Permissions..." A warning will appear saying you don't have permission, but that you can change permissions.
3.4.2 On the window that launches, click on "Advanced..."
3.4.3 Click on the "Owner" tab.
3.4.4 Select a valid account (the one you're logged in under) under "Change Owner To".
3.4.5 Hit "OK".
3.4.6 Back on the main Permissions window, hit Add and add the same account as a valid user.
3.4.6.1 Where it says "Enter the object names to select", type in the account name, e.g. "Smith".
3.4.7 Click on the "Allow" checkboxes for "Full Control" and "Read".
3.4.8 Hit "OK".
3.5 Repeat procedure for the "iPodManager.1" key.
3.6 Now right-click and delete both of these keys.
I think that's all that's required, but I also searched through the registry and deleted the following keys.
4. Other keys I deleted:
4.1 HKEYCLASSESROOT --> IPodManager.IPodManagerUI.1
4.2 HKEYLOCALMACHINE --> SOFTWARE --> Apple Computer Inc. --> iPod
I think that's all I deleted, but I'm not positive. I seached for instances of "ipod" using the Find... and Find Next functions under the Edit menu.
5. Exit out of the registry editor.
6. Re-install iTunes. I re-installed iTunes and reconnected the iPod, and everything worked.
I want to repeat that editing the registry can completely mess up your computer if you modify the wrong things, so only do this if you're comfortable, and be extremely careful.
Hopefully this helps!
Apple support people: assuming this works, please add it to your solutions page, and feel free to reimburse me for spending half of Christmas figuring this out.
Mark

GPIB Communication with Lakeshore VSM

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