Re: Date format while writing to database using database toolbox
The connectivity toolbox has a special treatment for the date/time column data type. It has a vi, which encapsulate a formated date&time with something like #date/time#. Anyways, I chanked the format of the string passed to the insert.vi and it is a correct one, like I want -MM-dd. The problem is that this date apears in database depending on the local setting (in international options in windows). That is very annoying, since every user has different local setting and it causes a mess, since I can read a date/time column from database only as a string, without prior knowledge, where is year, month and day. That couses a lot of troubles. I can try to tell the db connectivity toolbox, that the column, which I am writing to is the string type not a date/time, but I am not sure if I do not get an error. I shall try that. regards Pawel
Re: Date format while writing to database using database toolbox
Hello Rolf I have tried it on two kind: jet4 and ODBC - SQL Server. They are all dependent on local setting. But I agree it must be caused by the driver. regards Pawel
Date format while writing to database using database toolbox
Hello All Again a problem with input locales and database tooldbox. How to write to database using connectivity toolbox in user defined format (not dependent on Windows locales)? Every time different user is logged on and writes a measurement to database, the dataformat is different depending on the user setting. I would like to define the date format in LabVIEW and use it always. Thanks in advance Pawel
Re: Internet toolkit problem - growing Active Connections list
OK, I found it. The main part of top vi must be enclosed in a "while loop" as it is done in all Internet Toolkit examples. Then the problem is gone. I guess it is connected with the way how G web server talkes to the "CGI read request.vi". Pawel
Re: sms by the nokia
Hi I am not sure if it helps, but most of the new mobile phones have a standard RS232 serial port. It means that you can talke to your phone and send a command to send SMS using VISA serial vis. good luck Pawel
Internet toolkit problem - growing Active Connections list
When I built executables with G Web Server, sometimes, the list of active connections start to grow and whole system seems to stop responding for CGI calls. Does anybody know what could be the reason. Thanks in advance Pawel
Re: Continous acquisition on 800MHz, W_XP, with 6025E - has a problem on 200kS/s
Hello Big-C. I know I can sample (200kS/s/No.of Channels) per channel. I do not have a problem here. What I mean is I have a software triggering since 6025E does not support hardware analog trigger. That means that I am running a detection procedure each time I get a new block of data from memory. I looks like this procedure is taking up most of the processor time, and this is a limmiting factor. I tried to acquire data without this trigger procedure, and get possitive result. I can read every 3k Samples, which come to the memory buffer. It looks like I need to work on my treshold detection procedure. I have already found some creazy stuff going on, but that is a subject for a new thread. Thank you for your comment. kind regards Pawel
Continous acquisition on 800MHz, W_XP, with 6025E - has a problem on 200kS/s
Hello I try to continously acquire data from two channels of PCI-6025E in Win XP, stand alone LV7.1 application. It works well on 100kS/s, but it got real difficulty with going to maximum speed 200kS. I set buffer to 1M, which is enough for 100kS, but soon is getting overloaded in case of 200kS and some often software triggering. But even without triggering it gets problematic. I found out that the 10-30kS per iteration is the optimal setting. The question is whether it is my application fault, and this setup should easily run on this PC, or I am close to the limit. Thank you in advance Pawel
Re: Upgrading LAbVIEW - all the time the same problem.
Hi Dennis As in most of the LV-related things, also here I think you are right. kind regards Pawel
Re: Upgrading LAbVIEW - all the time the same problem.
Hi Luca Thank you for the answer. I understand. I my situation I would prefer to have the latest version installed. I can live with some different directories, but 90% will be overwritten with the new version. So do you think I can overinstall the new version to the old one? What about the unsinstall information in system registry and all keys? Will they be overwritten, or stay there to the end of times? Prbably they will stay and only stuff the registry. If so, I guess that uninstalling first, and then instaling a new version is the right choice. Well it looks like I have answered my question as well :)) Thanks regards Pawel
Upgrading LAbVIEW - all the time the same problem.
Every time I install new version of LabVIEW it creates another directory and feed it will 500MB of data. I do not use the old directory, and most of the things are anyways in the new installation. So I need to uninstall old stuff. What do you think about installing LV into one common directory. Insted of creating every time new directory LV7, LV 7.1, etc, make one directory where LV will be installed. Is there any issue, which will cause aproblems? regards Pawel
how to get second instance of exe file in W2k
When I build an application into exe, I can run it only once. When I try to run it second time, windows makes the first instance an active one. I would like to have second instance running as well. How to make that? Shat I make my vi reentrant? Will it help? thanks in advance Pawel
Re: LabVIEW crashes with "Insane Object" error.
I have a lot of property nodes (direct) so all of them will change to indirect and I need to wire referencees to them. But you are right, even though it shall take some hours it is worth to try. kind regards Pawel
Re: LabVIEW crashes with "Insane Object" error.
Hi Joe I have almost the same graphic adapter (G450), so I believe it is not graphics. Maybe the idea with copyying everything to another vi and resave will do the job. I shall consider that. kind regards Pawel
Re: LabVIEW crashes with "Insane Object" error.
Hi Joe Thank you for your help. The situation which you describe is identically 100% with mine. I am trying to save vi and ... LV crashes. In the mentioned post your teller says something about high resolution of the screen. That rings a bel, since I got dual head graphic adapter and two screens, which means that my resolution is 2048x768 !!! Maybe that gives LabVIEW hard times and causes so many troubles. On the other hand, I do not want to give up my double screen. It is realy convinient to have front pannel on one screen and diagram on another. Thanks for help Pawel
Re: LabVIEW crashes with "Insane Object" error.
Hi Shane That is an option, but the last one. I have a lot of setting for this vi, since it is the top level vi so it will take some time to resave it. But if necesary I will do it. Thanks. Pawel
Re: Why every GOOP "Get Data to Modify" is set as reentrant?
Hello Mattias Thank you very much. That was the perfect explanation. BTW: Actually I still can not decide to buy GOOP 3. I am so happy (and bussy) with 2.0.2 that I am not forced to go for 3. kind regards Pawel
Why every GOOP "Get Data to Modify" is set as reentrant?
Hello All I found out that in every GOOP programs like e.g. "report generation" the vi "Get Data to Modify" is set as reentrant. Can somebody explain to me why it is so? thanks Pawel
How to import a table from another database using DB toolset.
Hello All I would like to import a table from one database to another using DB toolbox. I do not want to import all data to LV and then save them to another database. Instead I would prefer to use SQL syntax. Does anobody know how to write SQL command to import whole table from one database to another? I have found in some SQL manual that INSERT INTO should work, but JET4 returns an error that table (e.g. c:\mydatabase\table1) can not be found. Thanks in advance Pawel
often Error in "memory.cpp" line 593
Hello All I am quite often getting fatal error in "memory.cpp" line 593. It happens erratically, after different actions, not in pattern. What does this error mean? Where can I start looking? My program deals with Database toolbox, Jet4 engine. I have LV 7, dell dimension 8100, 500MB, 1.5 GHz. Thanks in advance. Pawel
Re: techniques for a synchronous long-life data acquisition
Hello Preston
The idea with a queue is a very good one. It allows to make a
synchronous signal become asunchronous, since I can manage samples in
any time I want.
However, I have a little problem with understanding, how you want to
start datta processing of the queue if my state machine queue is bussy
with sampling and storing the data to a queue or disk file?
In 4) you are writing about the processing loop. Is this loop is
something else than a DAQ VI you mentioned in 2)?
If so, let me understand you well: We have a state machine loop
("acquisition loop"), which loads the DAQ data to a queue, together
with the control words (detect treshold, stop processing, etc.
We pass the reference of the queue to another loop (processing loop),
which is running parralelly to the acquisition loop. In that loop we
detect control words and do whatever we need to do.
Maybe it could be even better to run a processing loop in another vi
and run it in different thread with lower priority? In this way my DAQ
qill never loose any data.
Please let me know if this is what you ment.
kind regards
Pawel
Re: wheel mouse and event
Hello BigC that is quite an idea, thank you. I will think about it. regards Pawel
wheel mouse and event
Is there a simple way to implement wheel mous movement into LV7 event structure? I think of generating an event on wheel movement. thanks in advance Pawel
techniques for a synchronous long-life data acquisition
Hello All I have a digitizer, which needs to run at a constant rate for ever. When some condition occur (reading exceed treshold level), other data processing must take place. The data processing last for much longer time that the successive sampling, which means that I can not fit data processing in the same thread as the sampling process. It looks like I need some kind of buffer, which will be filled and keep track of the sampled data, and another thread for data processing and analizying. Can somebody give me a link, or advice about this kind of problems. What are the techniques for long-life data acquisition. Thank you in advance. Pawel
Re: How to turn off the new LV7 error probe while debugging?
Hello Wiebe again You are perfectly right. I have removed the file you mentioned and my old generic probe came in the place. Thank you very much, I quess we should not mention it to Kyle :. kind regards Pawel
Re: How to turn off the new LV7 error probe while debugging?
Hello Kyle Thank you for your answer, which BTW is not what I expected. The new smart probe is not so smart, I believe, since it must be placed before the data flow reach the probe. The old generioc probe will read the wire contents even though I placed it after the dataflow passes the wire. That is my biggest problem which successfully prohibits from using the new probe. Now every time I need to click three times more, if I rememeber. If I dont, I need to close smart probe and place a generic again. That takes time. In case of troublefull application, when I need to restart LV quite often this msart probe realy gives a lot of time lose. Since I am complaning I must say that most of the inventions in LV7 does not work for me. Fancy icons for controls, strange looking bad wires, completelly useless menu, etc. The only reason why I stick to LV7 is the dynamic events. Otherwise I will uninstall it ASAP. I guess that NI forgot about programmers which do LV for a living not for fun. kind regards Pawel
How to turn off the new LV7 error probe while debugging?
Hello All Every time I restart LV7 and want to place a probe on error wire it places the new fancy (i.e. not working properly) error probe. In order to place old fashion (i.e. working great) error probe I need to right click select custom probe and choose generic probe. Is there any way to make a generic probe to be the default one? thanks in advance Pawel
Re: DB Toolbox List tables - does not work properly
Dear Craig Thank you for your help. In my program (and problem) I created couple of empty tables in the same way as you proposed in the "Create Only" case in envlosed example. This should create only empty tables and there is no time spend on transferring the data. And this is which turned up to take more time then the vi execution. I believe that it can be caused by several reasons. The DB tools works on CINs, on top of it, communicated with SQL engines (I use JET 4). It could be like the engine release control to CINS but still is dooing some job with OS to create a table, reserve resources etc. If the system is loaded, which could be my case, the table creation takes long time. The idea with while loop gives me another idea to use it while querring the database. Immediatelly after the creation I can build the while loop which continues as long as the error occurs and stopes after the No error or timeout. That could solve my problems, I guess. kind regards Pawel
Re: DB Toolbox List tables - does not work properly
Dear Craig Thank you for your answer. It is a littel bit a pitty that I got it so late since I already made myt own work arround the problem. Insted of modifying the "DB Tools Open Schema.vi" I call the "DB Tools List Tables.vi" dynamically setting the desired controls and reading them back "on fly". When I do this, there is no more problems with the list tables. Probably my solution is much slower than yours, but at least I do not need to change internal private methods of DB class. That is especially important when the new upgrade will come and overwrite the old one, I guess. But you already said it shell be ment to be temporary solution. Since we are on the database DB tools now, another thing came to me today. Namelly, I need to wait 3-5 secs after I create 7 tables (quite big) in the database (Jet 4 engine). My machine Dell, 1.5GHz., LV7, W2k. If I do not wait, the "DB Tools execute query (Conn Execute.vi)" returns error that the table does not exist. On the other hand when I wait 5 secs after I create tables everything is fine. It is OK to wait 5 secs after the table is created, but this time should be forced automatically by the vi, not by the user debugging, I guess. I would send you the code, but it is connected to too much other stuff, which I am not likelly to send. Thank you again for you answer. kind regards Pawel
Re: Array from C function
Hello Helmut Problems with arrays is that you must reserve some space in memory for them. You can do it from CINs using the "memory manager" from CIN tools, but the easier way is to build the array in LabVIEW and pass the pointer top the dll. Inside DLL use this pointer to load the data to it and return back. In this way dll does not have to make a memory space for array. The disadvantage of this is that you need to know what the size of the array is in order to initialize the array before calling the dll. If you need some more of it try looking into: "lvexcode.pdf" hope it helps. Pawel
Re: Is it possible to add Event to the front of the Event queue?
Hello Jeremy I was thinking about state machine aswell, but I have already developped quite big application using events and I do not think I will go for state machine. Actually I think I may combine those two. Thanks anyways Pawel
Re: Processor goes to 100 %
Hello Randall You are right, it happens also on my machine, Dell 1.5GHz, LV7, W2k. You can see that when you press ALT and release it, the proc goes 100% and the menu is activated. On the processes page you can see that it is the LabVIEW which takes 99% of proc. When you press ALT again the menu is desactivated and proc goes idle. The same happens when you click anywhere else. It looks like it has something to do with the menu. But you have a good point, what happens when cont. data acquisition is required? regards Pawel
Is it possible to add Event to the front of the Event queue?
Hello All The "Generate User Event" can add the event to the end of the queue. Is there any possibility to add the event to the front of the queue?, like in the standard "queue operation"? Thanks in advance Pawel
Re: how can lv6.1 use it's picture control to enlarge picture's length and width
Hi I am not sure how about LV6.1, but 7.0 has the property node "zoom factor" for doing this. hope it helps Pawel
Re: Some Problems with LabVIEW and Matlab DLLs
Hello spj I do not know the problem, but maybe this will help. Did you try to put your library into a directory, which is in the dearch path of the operating system? Then use only the liobrary name (without a path) and write the function name. I have seen it in the most of NI examples using dlls. If it works give a response to this thread. Pawel
Re: rounding problem , LV7
Hi Nick that is correct, I forgot "EVEN". thanks Pawel
Re: why the tree control(lv 6.1)'s branch always shrink when run...
Hey pyj You are right, but unfortunatelly I do not have LV6.1 rigt now. good luck Pawel
Re: The best way to print a picture control from LabVIEW
Hello Greg thank you for the answer. Can I ask you also to go back to our last conversation and read my answer. Or better I enclose it here: "Hi Greg again I hope you will rad this message, though it is written after some time we have finished our converstion. In previous post, you write that the polar plot will render my plot depending on the device it is sending the plot to. You give an example that if my device is a printer, the polar will render plot with 600dpi resolution. That would work for me very well, but I need to ask you how make my printer the device that polar plot will write to. For now I can print my polar on screen and then print the front pannel (good resolution), or save the picture to graphic file and print fron report or etc (poor resolution). In case I could render the image directly on the printer I would obtain the best quality what so ever, but I do not know how to make my printer a output device for a polar plot. kind regards Pawel"
Re: the best way to make a nice POLAR plot in LV
Hi Greg again I hope you will rad this message, though it is written after some time we have finished our converstion. In previous post, you write that the polar plot will render my plot depending on the device it is sending the plot to. You give an example that if my device is a printer, the polar will render plot with 600dpi resolution. That would work for me very well, but I need to ask you how make my printer the device that polar plot will write to. For now I can print my polar on screen and then print the front pannel (good resolution), or save the picture to graphic file and print fron report or etc (poor resolution). In case I could render the image directly on the printer I would obtain the best quality what so ever, but I do not know how to make my printer a output device for a polar plot. kind regards Pawel
Re: why the tree control(lv 6.1)'s branch always shrink when run...
--1855560.1075716569332.JavaMail.quiq.tekken Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit hello You need to use a property node to open tree. See enlosed picture. hope it helps Pawel --1855560.1075716569332.JavaMail.quiq.tekken Content-Type: image/gif; name=tree_open.gif Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename=tree_open.gif Content-Description: open tree R0lGODlh/wB+APcAAAB7AAB7e///zv// /ywA/wB+AAAI/gAJCBxI sKDBgwgTKlzIsKHDhxAjSpxIsaLFixgzatzIsaPHjyBDihxJsqTJkyhTqlzJsqXLlzBjypxJs6bN mzhz6tzJs6fPn0CDCh1KtKjRo0iTKl3KtKnTp1CjSp1KtarVq1izat3KtavXr2DDih1LtqzZs2jT ql3Ltq3bt3DjHgRAt67du3jz6t3Lt6/fv4ADC8YbF8CAw4gTK17MuLHjx5AjS55MuXJiAIUR17XM ubPnz6Afb9ac+bBhuqFTq17NesBpw6ZRCphNu7bt27hz697NGzds165RQ/7durhx0K9hY4b7u3lk 4ceH241u3Lnr0sBNPydO3TH37qqt/i9/23y65uDBzYNv7Fw59NHrvZsf7/b74tfp1ce/rFn5eev7 SUZfW/Yphh9eAd53nmnT3ZWggNhZBt2D2lWY3YIUQshcf+hJlyGGAJ6GYYaoCTcgW8ThN9yHIF72 3oQfqnjiWuV1yOKN0ZWoHHbu4ehjdQzGtuGPRCY4o1riFVjkkpP1eN2QTEZ53JFpDWbllVhmqeWW dBUml0ZUohXmlw+NaZaZFR2JZklqcoTZiWuONWNdF41nFwFxJkSnRXbSmedcduJp0J9gwTkQoQQt NyCiiR7Kp0CL1hmoocwVFOmdkHaJ556Cdtropn0qqmmnl3K6J6akDpppqKuqmiql/uRZKuukjgaa 6qy1fnrrpblC6qmivuLqK322Ovqqq7HqOmytd9oKrLCCjnqXrI1O2qyxz1bL7KGoBgssrPVR22u0 4j5raLFdUsnrsrqaqyq6byJEWLzihltusOSye6un+hL7K77OjkvvvuvyO7C/uYJLIKChsvrvon62 Ciq3xU68qsO0JhqxxaaOii+5CqPY0J+MphlRyRuhvBWaJKfU8ksqaxUzmTNjxeXNOOess19eklln zz6bXGnQQiebUwBIO1XzVUt/FMBATzPVdFXZzhQ11AQgnbRAWnPdtU5TP/X02KLWdDXXWWN99dhY 5xR2U2eT+rZFcbONttZJrw12/s9z012Q3WnX3TZOfSsVd+EY6Z323WoPfhPiSu/0ddaTf6044Wsd HlTcRUHelOcccU4U6EVpTjRFpIuE9+qst463QzvHLvvsWCbl+u23IyT66V1tTZHvvKeVd+4KAU/Q 7sFrNbxBvrO9NvLJhzX81q877rXu0YM1fdTVB/439Nl7tb3XwHPetfOLh8/V+JQ3f5Dx6ks/tuWT pw81+PErP7/rC8Gfv/j4K14A/2cV3BlwdQQUywEXOMAEOvCBEIygBCdIwQpa8IIYzKAGN8jBDnrw gyAMoQhHSMISmvCEKEyhClfIwha68IUwjKEMZ0jDGtrwhjjMoQ53yMMe+vCHE0AMohCHSMQiGvGI SEyiEmkSEAAAOw== --1855560.1075716569332.JavaMail.quiq.tekken--
The best way to print a picture control from LabVIEW
Hello I need to print the Picture control (B&W) in the high resolution (300 dpi). I need to create a picture so it fits 300 dpi without any resizing. I calculated it like follows. My picture shell have 10 inches x 7 inches. With a 300 dpi it gives dimensions: 3000x2100 pixels. The problem is that when I make this kind of picture I can not print the front pannel (or I can but at 4 pages), even though I asked it to fit the front pannel. That means that the actual plot is not 300 dpi. How to make it 300? So, what is the best way to print a picture control in a high quality? thanks in advance Pawel
Why LabVIEW 7 crashes 5 times more often that 6.1
Very often, when I do something or too fast or Windows has something to do, or I do something, which is not listed in LV manual, my LV 7 crashes. Is there any service pack to LV7. Thanks in advance Pawel
