c_w_k

We were able to find out what it was.....the DLL that we were calling uses winapi calling conventions, LabVIEW 8.6 is smart enough to realize this so you don't have to set that when configuring your library function node - so I did not have this configured in 8.6 and it was still working, LabVIEW 8.2 is not smart enough to realize this......so since that was not set in LabVIEW 8.6 once it was saved for 8.2 it thought it was supposed to use the C convention instead of winapi ......after we changed that it worked fine. Thanks CK

I mean our DLL's and folder structures are the same but the computers are not exactly the same themselves......we also tried building the function call from scratch in 8.2 - it wouldn't work then either......

No the machines are not identical? If I created a VI in labVIEW 8.6 and used the "save for previous version 8.2" utility....would i need to have identical machines to run the vi???

hello, I created a vi that works just fine in LabVIEW 8.6 I then saved it for a previous version and gave it to my co-worker who has LabVIEW 8.2 on his machine. He is able to open the VI but when it gets to a certain function call it crashes. The function call is calling a c++ dll (which he has in the same location as I do on my machine) the parameters of the function are: String (c string pointer), double, long, double, *short Not sure why its unable to call one function and the other is making it crash.... Thanks for any and all help CK here is the function call that is causing LabVIEW 8.2 to crash.......It was created in LabVIEW 8.6 and saved for a previous version. -CK

Hello, I'm trying to figure out a way to parse a number in labVIEW. I will have a number that ranges from 101 to 416 and I need to separate the first digit from the last two digits of the number. So far the only way I can think if is to determine if the number is in the 100, 200, 300, or 400 range and then subtract that from the the input, so for example if my number is 416 then I can determine that it is greater than 400 so I would then know to subtract 400 from my number so 416-400=16 so that gives me the last two digits. Is there a better way of doing this? Thanks CK

Never mind... after looking around this is easy....just need to click the "Select VI..." button, not sure how i missed that before. problem solved by myself... -CK

hello, I'm wondering if anyone can explain how to call an external VI from another VI. I'm wanting to press a "Start" button on one vi and once the start button is pressed I want another VI to be called that actually executes the start function. I don't think this should be very hard to do but I've tried looking and haven't seen anything yet. Thanks Chad

I know its been a while, I was finally able to spend some time looking at this and was able to get it to work, thanks to everyone who mentioned the Open G library and who gave pointers on how to use it. I've attached a screen shot of my code... I have an INI file (CK.ini) that I want to read in from a file, I create a cluster that matches section1 of my ini file, then wire that cluster to the Read VI, then I wire the variant outcome of the Read VI to the Variant To Data (also need to wire the cluster to this)...then I have my original cluster back. (Thanks Yair)then I just unbundle the cluster. -CK

Right, only 1 was in the drop down list, even when I extended the list.....however, after looking over all pieces of my code I found an error .....it was only gathering 1 piece of information into the array...therefore there was only 1 element....thats why I was not seeing the second element. The post you made above worked fine for me as well both with integers and strings......sorry for the false issue, I appreciate your efforts in trying to help me. Thanks CK

Thats what I am trying to do, except with a string array, their are only 2 elements in my array right now but I can only see the "0" element of the array. The string array that I am using is dynamic, based on how many devices are found on the network it could contain 2 or more elements. I'm using a local variable of the array to plug into the combo box properties node. also, I can see both elements in the actual array....just not in the combo box.

Hello, I'm sure this is going to be a simple solution, but I'm trying to simply populate a combo box with values that have been put into a string array. I can get the first element of the array to show up in the combo box but not the second element. Any solutions or ideas would be greatly appreciated. I've attached the section of code that I'm trying to accomplish this with. I'm trying to get the name of the devices (which i get back from a dll), I put the names of the devices into the stringOptions array, and then I input the stringOption array into the String values of the Combo Box properties node....this will show the first element of the array in my combo box, but not the second. Thanks CK

1970 epoch = 21600 (hopefully these are right, found them on a website that calculates epoch dates) 1904 epoch = -2082823200 ====================== difference of -2082844800 so I added -2082844800 to the variable that is sent in from my C++ DLL......and I now get a year of 2246, which isn't as bad as being off by 300 years....but i've still got a ways to go.....the DLL is getting the value from a device simulator so I wonder if it is sending a bogus number.....

Hello, One of my many questions is on creating a timestamp in LabVIEW.... I'm getting a value from a C++ DLL that returns the seconds since 01/01/1970 ("epoch"). I'm then trying to use the LabVIEW "SecondsToDate/Time" vi to convert this to a readable time format. When I do this the date is off by 300 years.....is there a trick to doing this? Is the labVIEW "SecondsToDate/Time" vi capable of converting time from 01/01/1970 or does it use a different date to convert from?? I'm wondering if it may be easier to create a timestamp just by using labVIEW instead of trying to convert the epoch variable that is returned by the C++ dll? For example my vi is gathering data constantly from a device, instead of taking the epoch variable from the C++ code I think I could possibly create a labVIEW time stamp each time the vi collects data........my first choice would be to convert the epoch variable that is provided from the C++ DLL..... so any help on taking a C++ variable and converting it into a timestamp in LabVIEW would be greatly appreciated... I've attached below, the code that I have so far.... -CK

Okay, so I'm trying the OpenG vi for this.... Right now I'm just using a simple ini that consist of : [section1] key1=123 key2=456 key3=789 [section2] key1=1000 key2=2000 key3=3000 In my labVIEW code on the block diagram I have the path of the INI going to the "Open Config Data.vi" which connects to the "Read INI Cluster"......Do I need to actually create a cluster in labVIEW that contains everything in the INI file?(Currently I do and have that feeding into the "Read INI Cluster" vi. I'm not sure exactly what I should be doing on this part. I have the output of the "Read INI Cluster" set as a "INI Formatted Cluster" indicator.....on my labVIEW program I can see all of the values but they look like this: "->123 instead of just looking like: 123 I'm not sure how I can separate these values out by themselves either....so for instance, if I only want to use "key1".....if I were able to unbundle by name then i could do it...but i'm not seeing that option. I've attached of the block diagram as well as the output that i am getting on the front panel. Thanks for any help CK

Thanks for all the feedback on the OpenG INI vi's, I'm going to give them a shot now....