Programatically updating a cluster in a cluster

I have a cluster that contains several arrays and a cluster of controls. I am trying to create a method for a user to select one of the controls in the inner cluster and update the value. I am trying to populate a ring control with a list of the control names to allow selection of the desired control. The select param sub VI allows selection of the arrays or cluster, but when I use this index to select the reference for the cluster, the following property node doesn't offer the choice of selecting the controls[] property for the cluster. Is this possible?
Jim
LV 2013
Attachments:
cluster.vi ‏138 KB
SelectParameter.vi ‏22 KB

You might want to look at the vcluster library from the "OpenG LabVIEW data tools". That allows dealing with cluster elements by name.
If you don't have OpenG here are some installation instructions.
http://forums.jkisoft.com/index.php?showtopic=233
Things can get complicated if you need to handle multiple data types, and more than one level in the hierarchy.
The variant probe on lavag is a good example of a very generalized read only version, but it requires LV 8.5.
I attached a quick prototype that should open on LV 8+ with the openg library. Be aware it's lacking error checking.
Instead of a menu ring I would use a multicolumn listbox with the name in the first column and the value in the second, to make it easier to see what the current values are. If you wanted to get extra fancy you could try to use Type Sensitive Popups from lavag.
Attachments:
cluster 2.vi ‏86 KB

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Programatically update the Report Option dialog in NI Test Stand 4.2.1

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Attachments:
ReportOptionWindow.JPG ‏64 KB

Hi
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How do I update a cluster that is in an array?

I have an array composed of six clusters called "Station". I'm getting values that I would like to store in each of the six clusters in the "WO" and "SN" strings from a subvi that outputs an array of six values of WO and SN. How do I do this?
Thank you.
Solved!
Go to Solution.
Attachments:
Untitled 2.vi ‏16 KB

If the size is always size, and you get six elements each from the subVI, the easiest would be the following.
(Of course th input cluster needs to have six elements. If you don't get it from a input connector, make at least sure that the default array control contains six elements. In this example, all input elements remain the same, except for the update fields.
(I haven't looked at your zip file yet)
LabVIEW Champion . Do more with less code and in less time .
Attachments:
ModifyArrayOfClusters.png ‏5 KB

Problem : controls & indicators not updated when programatically open Front Panel

Hi,
I have a strange problem when I want to progamatically open the front panel of a sub-vi: for some sub-vis the controls and indicatores are correctly updated while for others they are not (ie the controls show outdated values).
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Solved!
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Attachments:
Front panel problem.zip ‏35 KB

titi_nicolas wrote:
mhmmm,....no that is NOT the reason... Have you tried the VI???
Honnestly, I would not bother people on this forum for such a stupid mistake.
And I also expect people to know how to run a VI....
And to play in your game, you forgot -3) Turn on the PC, -2) log in windows, -1) open labview...
Well, I DID run your VI and everything worked just fine, however I no longer have LabVIEW 7.1 so maybe your observation no longer applies to newer versions. It could also be because they were just upgraded as Ben noted. I did not study it in detail.
And Yes, as Ben noted, invisible VIs don't get updated for performance reasons (and not to waste extra data copies for the controls and indicators). LabVIEW is typically smart enought to update when needed, e.g. if the subVI tries to print its panel, etc.
I guess you haven't been in this forum for too long, but since controls can easily be operated in edit mode is is absolutely important to mention at which step you run the VI. (try to operate your controls with the computer turned off and you will see that it is not that easy ). Also if you have been programming for any length of time, you should know that stupid mistakes happen all the time (at least to me and Ben ). It is much easier to weed out the stupid mistakes with a quick question&answer than to spend hours searching for a deep and complex solution.
LabVIEW Champion . Do more with less code and in less time .

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I work for an IT department at a college. Is it possible to update the OS to tiger from panther throught the ARD? Or do you have to do them manually? Also, is it possible to install Adobe Creative Suite 2 through ARD?
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No sorry. You must install the OS manually.
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Lost updates in cluster environment known problem?

          we are running weblogic clustered. We have an entity bean that is set to read-write
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          Okay, we found issues just like this in posts to the bea newsgroups from 2000.
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          This has stopped this from happening. Any thought? Is this really a true fix?
          Thanks all...


          We have db-is-shaed to true.
          Also, its not that one server is overwriting what the second server does, its
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          "Cameron Purdy" <[email protected]> wrote:
          >Transactional control does not stop lost updates. If the second server
          >overwrites the cahnges made by the first, then the update will be lost.
          >
          >The question is this: What behavior do you actually want? Do you want
          >the
          >update on one server to disallow the update on the other server? If so,
          >explain your reasoning.
          >
          >What you should have is a means to ensure data integrity, which is to
          >say
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          >transactionchanges necessary data during the course of the transaction.
          >That
          >is usually accomplished by employing version or timestamp columns.
          >
          >Peace,
          >
          >--
          >Cameron Purdy
          >Tangosol Inc.
          >Tangosol Coherence: Clustered Coherent Cache for J2EE
          >Information at http://www.tangosol.com/
          >
          >
          >"ralph" <[email protected]> wrote in message
          >news:[email protected]...
          >>
          >> we are running weblogic clustered. We have an entity bean that is set
          >to
          >read-write
          >> (which means that in clustering no caching will be used as per your
          >docs).
          >We
          >> are hitting this entity bean from both servers at the same time, an
          >update
          >by
          >> one, and a read by the other. What is happening is that the update
          >appears
          >to
          >> get lost for lack of a better term. We have the update in a method
          >that
          >requires
          >> a transaction, and after this method is finished (which means the
          >trasaction/db
          >> commit has completed) we have a finder method that returns the updated
          >record.
          >> Then, we shut down the servers and look in the db, the row has NOT
          >been
          >updated.
          >> We found something in your docs about "lost updates". It said to set
          >the
          >isModified
          >> method in the ejb to always return true, this also did not help.
          >>
          >> Okay, we found issues just like this in posts to the bea newsgroups
          >from
          >2000.
          >> We tried what was recommended by Rob Woolen, and it worked. We set
          >the
          ><delay-updates-until-end-of-tx>false</delay-updates-until-end-of-tx>.
          >> This has stopped this from happening. Any thought? Is this really a
          >true
          >fix?
          >>
          >> Thanks all...
          >>
          >
          >

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Hi,
May be of use
1. Open the visual admin at <installdrive>:\usr\sap\J2E\JC00\j2ee\admin\go.bat
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sap.com/tcwddispwda
sap.com/tcwdtools.
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Ayyapparaj

How do you set the value of an enumeration programatically

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Thanks.
Solved!
Go to Solution.

True, True. The original post wanted to know how to programmatically "select" the enum value. To me, that means to either force the enum to display another value, or retrieve the current value. I thought Ben was referring to the fact that you can't programmatically set or initiate new values into an enum. Which as he said, can only be done with a Ring.
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We are using datasocket read and write functions to read and write shared variables programatically (in the same machine) but we only achieve a performance of aprox. 200 reads/writes per second. We are using Labview 8.6 with DSC.
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Hi MMCDAT,
I think this value can
be normal as you can see in this link:
http://zone.ni.com/devzone/cda/tut/p/id/5037
As you can see, the
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http://digital.ni.com/public.nsf/websearch/6AC9E65734E53F9A8625672400637ECC?OpenDocument
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http://digital.ni.com/public.nsf/allkb/2D9C6D73A160537986256B290076456E?OpenDocument

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Instead of using the print at completion option, print the VI programatically if the user selects to print...open a reference to the VI you want to print and use an invoke node to print vi to printer.
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I have developed several COM instrument drivers in Visual Basic 6.0 which I can call from TestStand using the ActiveX/COM adapter. However, I would like to be able to create a custom step type for each of these ActiveX servers. Each server provides several creatable classes and a number of interfaces. Ideally I'd like to create a custom step type that references the GUID of my server but have the ability to programatically assign the step properties such as Interface ID and CoClass ID to use the classes and interfaces of my server that I want need to access.
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Regards
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I'm adding some user enhancement (anti-screw-it-up functions) to insure the desired process is executed.
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Doug
Doug
"My only wish is that I am capable of learning each and every day until my last breath."
Solved!
Go to Solution.

Actually, changing the focus alone did not trigger the event but I was able to then utilize the Empty Path/String function to drive a Value(Signaling) node for the control.
Doug
"My only wish is that I am capable of learning each and every day until my last breath."
Attachments:
Event_Structure_Trials.vi ‏29 KB

Programatically delete a DAQ device

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Jeff·Þ·Bohrer wrote:
Hmmmm...... There has got to be a way to script up the "Toss Tasks to MAX" and "include .nce" as part of a "Deploy" process. Wirebird, Jack? any opinions on that?
I would tend to agree with John_P1's quote below:
John_P1 wrote:
I honestly just build up my tasks programmatically.... You can do just about anything that you could do in MAX programmatically via the System Configuration API.
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Jo-Jo wrote:
...I just find [that using MAX] really speed development, and help with maintanence because you can test out all of your tasks in MAX outside of any LabVIEW code. And debug and toubleshoot hardware without using any of your own software, so you know any problems are not software bugs.
once going into production. MAX tends to be a good tool for getting your feet wet after unboxing the hardware, but something you gradually migrate away from after the prototyping phase -- yet occasionally return to, as you mention, if you need to back up to square one for new prototyping or as a sanity check.
It's possible to deploy NCE hardware behavior configurations, but not necessarily desirable. For the same reason it's possible to deploy any arbitrary configuration (INI, XML, ....), yet it's likely more desirable to build this configuration programmatically -- perhaps persisting it to disk if it's a user-modify-able configuration, or if it's desirable to persist user settings between subsequent deployments -- else it might be most desirable to keep the "configuration" hard-coded as essential business logic (as DAQ tasks might tend to be).
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How to add a Parameter to a Module Specifications, programatically

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=s=i=g=n=a=t=u=r=e= Click on the Star and see what happens :-) =s=i=g=n=a=t=u=r=e=

How to programatically set front panel objects (buttons) to enable, disabled, and disabled and gray

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Programati​cally updating a cluster in a cluster

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Programatically updating a cluster in a cluster