how to view mdsplus data using labview

[inhp]

 I posted this question in the Labview board, but seems nobody replies it so far. I am not sure which board is the best place to post this question. So I just reposted here.  Thanks a lot.

I am a newbie to Labview. I am trying to write some vi to view and write data to Mdsplus.  I have downloaded Mdsplus(labview), and can find the Mdsplus functions, like mdsconnect, mdsput, ect, in the Call Library Function vi. But I have no ideal of how to use it. I tried to use Mdsconnect function to connect to some machine, but it always gives me an error message like, Labview: An exception occurred within the external code called by a call library function node.......  I was searching for help documents on the internet, but couldn't find anything useful. Could you please help me for this problem?  If you have any example of such vi, or teach me how to do it, that would be very helpful. I am using Labview 8 (windows). I would greatly appreciate your help!  Looking forward for your reply.

[Albert.Geven]

Hi

MDSplus is datastorage in files in a special way.

So reading and writing files is the way to go

LabVIEW  can support a lot of filetypes or you can read or write files.

The TDMS fileIO maybe supports also MDSplus otherwise it can be extended to such a system

[gjhartwell]

Hi,

We use LabVIEW 8.5.1 and communicate with an MDSPlus server on a regular basis, so we might be able to help.  I've attached the VIs that we use to open a shot, read an array, and read a floating point.

Greg

[gjhartwell · Accepted solution]

oops,

I didn't attach these correctly in the previous post.

Greg

[inhp]

Thanks a lot, Greg!

[inhp]

Greg, I checked the vi you attached. There are some sub-vi missing, such as Mdsconnect.vi, Mdsopen.vi, MdsGetInt.vi and Mdsclose.vi. Could you also please attach those vis? I think the Mdsconnect.vi and Mdsopen.vi are essential to me. Thank you so much!

[gjhartwell]

Hi inhp,

The missing sub-VIs that you mentioned should be in the mdsplus/labview download.  Please check there first and if they are not there I will get them to you. 

Thanks,

Greg

[inhp]

Thank you so much, Greg.  I found those VIs. 

[gjhartwell]

Hi inhp,

Great!  I'm glad you got it.  Let me know if I can be of further help.

Greg

[Maxxi]

Hi Greg,

I have labview 8.6 and couls not use those mdsplus vi's (not comaptible with labview 8.6). Do you know where to download the compatible mdsplus vi's??

Thanks

Maxxi