topic Re: Why does Lab View add control elements to some driver VI's! in LabVIEW

Why does Lab View add control elements to some driver VI's!

WolfS — Wed, 27 Feb 2013 12:25:54 GMT

Hi,

I have downloaded a driver project that was developed with Lab View 2009sp1. Now I will this project use with LV2010.

To do this I have the library installed in instr.lib. But when I opened some VI's I discovered that Lab View have added control elements.

Why is it so and how can I stop this behaviour?

Re: Why does Lab View add control elements to some driver VI's!

crossrulz — Wed, 27 Feb 2013 12:31:50 GMT

What do you mean by control elements? Controls in the front panel palette?

Re: Why does Lab View add control elements to some driver VI's!

WolfS — Wed, 27 Feb 2013 13:06:47 GMT

Yes, Lab View adds a numeric control to this VI.

I have attached a screen shot of this VI. One time opened with LV2009 and on time opened with LV2010.

Re: Why does Lab View add control elements to some driver VI's!

.aCe. — Wed, 27 Feb 2013 13:28:09 GMT

Rightclick on the control>> Visible Items>>Uncheck Digital Display.

Its the digital display from the same control, its not an extra control.

Re: Why does Lab View add control elements to some driver VI's!

WolfS — Wed, 27 Feb 2013 13:54:25 GMT

I doesn't mean the Operation Mode enumeration. I mean the control below with the label "Value (0)". This control is generated by LabView.

And also in some other VI in the same library are different changes who are made by Lab View.

Re: Why does Lab View add control elements to some driver VI's!

DavidBoyd — Wed, 27 Feb 2013 13:58:12 GMT

Wait. What?

Your advice that "Its the digital display from the same control, its not an extra control." is not true.

Look at the PDF the OP provided. Clearly someone modified the VI in question to add an extra floating-point parameter to be passed to the instrument after the mode-setting command. This is an NI-supplied instrument driver for a family of Höcherl & Hackl electronic loads.

I'm not sure where the OP got the earlier version of the driver. I just checked the IDN, and there is only one release listed, and the VI in question has the "Value (0)" parameter on the conpane and wired in to the Format Into String node. So, there's no telling where the OP got the prior version.

Dave

Re: Why does Lab View add control elements to some driver VI's!

.aCe. — Wed, 27 Feb 2013 14:10:31 GMT

Surely that didnt just happen because you saved it in 2010. You downloaded a new set of drivers for 2010 from here: http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=AFAA2CBD85041C96E04400144F1EF859

The second driver has more features.

Also, note that the two modes are different, in the second case you are specifying the current where as the first one is a constant current configuration for the load.

Re: Why does Lab View add control elements to some driver VI's!

Matthew_Kelton — Wed, 27 Feb 2013 14:14:07 GMT

You weren't explicit, but based on what I am seeing, you downloaded the LV2009 and then downloaded the LV2010 ersions of the driver here right?

http://sine.ni.com/apps/utf8/niid_web_display.download_page?p_id_guid=AFAA2CBD85041C96E04400144F1EF859

It looks like they made some revisions between the driver and didn't update the LV2009 version. Just use your 2009 version and move it into the LV2010 instr.lib directory. LV will upgrade it and you will have the same code you used in 2009.

Re: Why does Lab View add control elements to some driver VI's!

WolfS — Wed, 27 Feb 2013 14:20:27 GMT

This driver was made with Lab View 2009sp1. And if I open it with the same Lab View version then all VI works well.

But when I will use the same project in Lab View 2010 then I get this additional floating point element. And as result the load who should work with is getting an syntax error.

Re: Why does Lab View add control elements to some driver VI's!

DavidBoyd — Wed, 27 Feb 2013 14:25:06 GMT

.aCe.,

Now I'm curious - I followed the download links for both the 2009 and 2010 versions of that driver - carefully, into separate folders - and in both zip archives the file in question has a modified date of 2011-12-15, and a file history version of 74. Where do you see the OP's older version without the extra parameter?

Further down on that page, there are links for the individual instruments supported - and some of those lead you to an older-style driver "0604" enclosed in an LLB. But those look completely different.

Dave

Re: Why does Lab View add control elements to some driver VI's!

Matthew_Kelton — Wed, 27 Feb 2013 14:45:25 GMT

If you don't have the same instr.lib code in the LV2009 and LV2010 folders, it won't matter if you open the same project, because your project doesn't carry the instr.lib driver code.

LV2010 will load the version that is in its instr.lib folder and LV2009 will load the version in its instr.lib folder. If you delete the LV2010 version of that driver and copy the LV2009 instr.lib code over, LV2010 will upgrade the instr.lib code and it will be the same.

Re: Why does Lab View add control elements to some driver VI's!

Matthew_Kelton — Wed, 27 Feb 2013 14:46:36 GMT

Dave,

Depending on how long this equipment has been around, he could have downloaded the previous version for 2009, and then upgraded to LV2010 after that version was released.

Re: Why does Lab View add control elements to some driver VI's!

.aCe. — Wed, 27 Feb 2013 15:05:59 GMT

@DavidBoyd wrote:

.aCe.,

Now I'm curious - I followed the download links for both the 2009 and 2010 versions of that driver - carefully, into separate folders - and in both zip archives the file in question has a modified date of 2011-12-15, and a file history version of 74. Where do you see the OP's older version without the extra parameter?

Further down on that page, there are links for the individual instruments supported - and some of those lead you to an older-style driver "0604" enclosed in an LLB. But those look completely different.

Dave

My point being that the 2009 drivers in OP's screenshot is before the upgraded drivers in the link. LabVIEW cant be automatically adding connector pane inputs, controls and changing enum parameters just because its saved in a different version!

Re: Why does Lab View add control elements to some driver VI's!

WolfS — Wed, 27 Feb 2013 15:14:12 GMT

Yes that's right. It is only one version exist for the two different downloads.

And now when you store the folder HH ZSxx Series

on time in ...\Programme\National Instruments\LabVIEW 2010\instr.lib\

and one time in ...\Programme\National Instruments\LabVIEW 2009\instr.lib\

then you get the difference in the VI Configure Mode and also some changes in other VI's. And all changes which are done in LV2010 get an error.

Re: Why does Lab View add control elements to some driver VI's!

DavidBoyd — Wed, 27 Feb 2013 15:16:56 GMT

.aCe., Matthew,

My only interest in all this was, "where did the OP get the version without the other input"? Both his screenshots are clearly from a "project-style" driver - the VI titles show the same LVLIB namespace. But there's only a single, 1.0 release of this driver that I can find on the IDN. It may have links for two different LabVIEW versions, but the VIs sure look the same to me under both.

I can only guess that he inherited some kind of pre-release 0.9 beta release from an incomplete development effort.... but that's only a guess.

Dave

Re: Why does Lab View add control elements to some driver VI's!

DavidBoyd — Wed, 27 Feb 2013 15:24:24 GMT

WolfS,

If you select Edit->VI Revision History on each version of the VI, what do you see for "Next Revision"? Just curious.

Are driver libraries downloaded from IDN localized somehow? I'm trying to think of any way that you would get a different package of VIs from what should be the same link that I followed.

Dave

Re: Why does Lab View add control elements to some driver VI's!

WolfS — Thu, 28 Feb 2013 06:57:59 GMT

Hi Dave,

I have checked which next revision are displayed in the dialog VI revision history and it is different. in LV2009 it suggest 64 as next revision and in LV2010 suggest 74 as next revision.

But the files should be the same. I have it downloaded on time. I unzipped it in a separate folder. I copied it and then I paste it on time in LV2009 in on time in LV2010.

Also it isn't only one difference between this two installation, there are some changes.

It looks like LV2010 did made this changes.

Re: Why does Lab View add control elements to some driver VI's!

WolfS — Thu, 28 Feb 2013 08:09:39 GMT

Attached a pdf file with some furthermore changes.

Re: Why does Lab View add control elements to some driver VI's!

Matthew_Kelton — Thu, 28 Feb 2013 14:36:39 GMT

So LabVIEW is telling you you have installed two different versions of the driver. Regardless of what you THINK you did, you have two different versions. Delete the LV2010 version and copy the LV2009 version into the LV2010 folder.

Re: Why does Lab View add control elements to some driver VI's!

WolfS — Thu, 28 Feb 2013 14:59:30 GMT

Hi,

I have it done as you have it descript and now it works. But I don't know why. And I'm not the only one how have this problem.

OK, thanks for this solution.