Charles Chickering

I have inherited an architecture that uses LabVIEW classes to call our instrument drivers. My users write tests that call these vi's and the architecture provides a framework that calls the user's VI dynamically with settings loaded in from an Excel spreadsheet. I am not allowed to change the overall architecture of the project due to the time it would take for everyone to rewrite their code. My task is to get our architecture built into an executable which was never a requirement when the original coder wrote this architecture. Additionally, the built executable must dynamically call the user's vi so that the application does not have to be rebuilt every time a user writes a new test. The problem that I am having is that I always get error 7 when I try to call a dynamic dispatch VI. I have read a lot of forum posts about this error and they tell you to include the class files in the build and check the enable debugging but this won't help me. My application doesn't know anything about the LabVIEW classes, I am simply calling the user's vi which is calling the class vi. In the development environment, this error is fixed by having a project open with the class inside it, but in the executable I can't seem to make it work. Also, I am limited to LabVIEW 8.5.1 (with a very minor chance of switching to 8.6.1 if it fixes this issue). I appreciate any help ya'll can give and I can send code via email if needed. Thanks, Charles

Thank you for the quick reply, Do you know of any examples of the web service feature? Any example code or howto doc's would be a great help. If it matters I'm using LabVIEW 8.6.1 Professional Development System.

All, I'm trying to implement a web form using LabVIEW remote panels. I've never had the need to use remote panels before so I'm not sure if it can do what I need. I want multiple users to be able to login to the server (all through a web interface) and fill out a request form. I think this would be fairly straight forward for one connection but I can't think of an easy way to have multiple users connected to the server at the same time but viewing different request forms. Does anyone have any suggestions? Obviously there are a hundred different ways to do this with client side apps but I'm trying to keep all the LabVIEW on just the server. Any help/suggestions are greatly appreciated. Charles

QUOTE (Michael Aivaliotis @ May 15 2009, 03:10 AM) That's awesome! Any guess as to whether or not it will be available to those without the NI subscription?

QUOTE (jdunham @ May 7 2009, 03:46 PM) Agreed, and mixing this with in range and coerce would really clean up a lot of my stuff. Charles

QUOTE (jasonh_ @ Apr 28 2009, 08:22 PM) I don't have much experience with Word but I'm very well versed in Excel would recommend that you use this statement at the beginning of your macro: Application.ScreenUpdating = False Then turn the screen refreshes back on at the end of the macro Application.ScreenUpdating = True In Excel this can save you a good deal of time. Charles Chickering

QUOTE (Aristos Queue @ Apr 21 2009, 02:41 PM) Cool, I'll give that a shot tomorrow if I get the chance. You wouldn't happen to have a copy of the "CLSUIP_CreateOverride.vi" and "User_Scripting_For_New_Override.vi" VI's in 8.5.1 would you? Our main project is still in 8.5.1 and I can't save the first VI for previous version for lack of the block diagram password for some odd reason. Thanks alot for your help. Charles

QUOTE (Aristos Queue @ Apr 20 2009, 11:05 PM) No I'm actually not even using dynamic data. I've simply got a parent class we'll call "Power Supply" and child classes we'll call "Agilent" and "Chroma". I'm making a wrapper so that I simply change my configuration file to switch between Agilent and Chroma models of the power supply. I think the VI's that you provided in the thread that jdunham linked to would work if I had the 8.5 versions of them. I tried saving them from 8.6 back to 8.5 but no luck w/o the password and I can about bet that there's no chance on getting a hold of that. Also, that appears to only create the over ride VI, is there a programmatic equivalent to right clicking my "Power Supply" class and clicking "VI from Dynamic Dispatch Template"? Thanks for your help. Charles Chickering

QUOTE (jdunham @ Apr 20 2009, 05:57 PM) Yes, I've been using the standard method for the last nine months. The problem is I've got a folder of about a hundred instument VI's that I'm putting into an OOP wrapper. I was hoping to do this programmatically. Thanks for the link to the other post I'll give those VI's a try. I'll post back if I get anywhere with it. Thanks, Charles Chickering

Hi guys, I've started trying to write code to use scripting to create VI's for Dynamic Dispatch and the Override vi's for the VI's. Has anyone else been able to do this because I can't seem to get it to work in 8.5. I can get a hold of the class and create a new VI but not a Dynamic Dispatch VI. Also if I can create the main instance how do I create the override VI? Any help is greatly appreciated. Thanks, Charles Chickering

QUOTE (Jim Kring @ Apr 16 2009, 07:14 PM) I'm in. Just let me know when you get the shirts made. Charles

QUOTE (asbo @ Dec 19 2008, 09:21 AM) In some cases this would be possible but I don't understand how it would help me. In other cases I'm using for each loops and, to my limited knowledge of TestStand, there is no while loop equivalent. Thanks, Charles

I've got a Test Stand app that I need to modify the error handling on and have ran into a road block. Basically, I have a series of nested loops and when I encounter an error on a step, I need to go back to the beginning of the sequence and start over but I want all the loops to pick up where they left off. I'll try to give a text based example: Sequence Start Init Test Init Database Init Instruments For i = 1 to 10 For i2 = a to e Do x Next Next if an error occurs at Do x where i = 5 and i2 = c then I want to go back to Sequence Start, Execute all steps but on the loops I want i to start at 5 and i2 to start at c. Furthermore if the condition passes normal looping must resume, if the condition fails three times then the program must terminate. Is this possible to do? Any help is appreciated as I'm new to TestStand. Thanks, Charles Chickering

QUOTE (Ton @ Oct 22 2008, 03:53 AM) Thanks for the info Ton. I've got it sort of working. Is there any way to get the VI that was frontmost when the menu was called? When LabVIEW launches my "Tool" it becomes the front most vi. I have tried using the call stack vi to see what called the vi but that doesn't work. I've also tried the application node of frontmost diagram vi but that doesn't work unless I working on the diagram of the front most vi. Is there a way to get the display order of the windows? Thanks, Charles

km4hr, If you'd be willing to send me what code you have so far and a description of what you intend to accomplish, I can make some recommendations on how to set up your framework. My email address is charles(dot)labviewguy(at)gmail(dot)com (replace the (dot)'s and (at)'s obviously...) Also, I can add your code to a project and setup application builder for you. Charles QUOTE (km4hr @ Oct 21 2008, 04:32 PM)