Can I call a labview VI from a batch file?
With much frustration, I cannot seem to get my labview vi to run from a batch file. Everything appears ok in terms of the directory and filename but I keep getting a bad filename error message. Anyone have any ideas around this? I also tried using the call command with no such luck. Windows 98 is the OS run lv 6.1.
Programming guide for Amplifier research 30W1000B
Does anyone have the programming guide for an AR 30W1000B amplifier? Their website link is does not provide the manual and their customer service reps are out to lunch?
RE: Uniquely identifying computers
A simple method that I use is to use the system exec command and issue the set command from the dos prompt in win2k. From there you can pick off the username logged into the computer. You can try this manually by going into the start and then run menus of windows. Next, type command at the pop-up box. Once the dos shell name comes up, type set. Look for username and you can do a match pattern off username. I just tried this a moment ago and noticed that you can also see the computer name as well. If command does not work with your version of windows, try using cmd. Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Craig Graham Sent: Wednesday, April 07, 2004 2:32 P To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: Uniquely identifying computers - Original Message - From: Michael Porter [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, April 07, 2004 6:52 PM Subject: Uniquely identifying computers Is there a way to read from a LabVIEW executable any sort of value that will uniquely identify one particular computer? The computers will be from unknown vendors, but all running some version of Windows. MAC address of the ethernet card? Try ipconfig /all from a command prompt. Obviously won't work if the ethernet card is swapped out at some point, so whether it's useful or not depends on what you're actually wanting to do. -- Dr. Craig Graham, Software Engineer Advanced Analysis and Integration Limited, UK. http://www.aail.co.uk/
RE: Infrared Cameras
I'm using a FLIR P40 camera for measuring power amplifiers. I don't have the firewire connection so I cannot tell you how labview could integrate with it. They are very, very expensive BTW. This unit was about $30k. For another 5k I believe you get better software and the firewire connection. Mikron or Micron (I forgot whether a c or a k in the spelling of their name also has a good equivalent camera to the FLIR but FLIR's software is much easier to work with. I had salesmen from both companies into our facility to show us the benefits of each of their cameras. I have been very please with the ease of use of the FLIR camera and software. Believe me, you do not want a complicated camera to work with. I have used very complicated ones and you always ended up doubting your measurements because of the complexity of the software switches. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Charles Lasnier Sent: Tuesday, April 06, 2004 4:07 PM To: Info-LabVIEW Mailing List Subject: Infrared Cameras Simon, It seems like there is a new model of IR camera on the market every couple of weeks from someone. Most IR cameras are about 320 x 240 pixels, and a few are 640 x 480. You need to figure out exactly what size object you need to resolve and whether this is enough pixels if used to view your large target- from your description I doubt it. IR cameras are available from a lot of companies including FLIR, Indigo (now part of FLIR), Electrophysics, Raytheon and others. It also depends on the temperature of your target, the minimum temperature difference you need to detect, and the type of material which will determine the emissivity. The cooler it is, the more you require longer-wavelength sensitivity, such as 8-12 microns. If it is very hot, the target will emit sufficient infrared around 1 micron. Ordinary CCD cameras with no filter have some sensitivity at that wavelength, and larger pixel counts are available. In many cameras there is a serial port for camera control but it is not usually used for downloading images. You most likely will need an analog or digital frame grabber. It's hard to make a recommendation without knowing more details about your problem and the money you are willing to spend. Do you need to measure actual temperatures, or just find hot spots? Radiometric cameras which put out temperatures are more expensive. -Charles Lasnier Subject: Infrared Cameras From: simon kelly [EMAIL PROTECTED] Date: Mon, 5 Apr 2004 20:45:43 +0100 (BST) Does anybody have any suggestions for an infrared camera that can scan large areas (2m*3m) with good resolution and serial comms? Thanks in advance Simon
RE: request from an experienced newbie.
You might look into National Instrument's teststand v3.0. It's somewhat expensive but would fit in very nicely with your automated testing environment. Otherwise, you will need to come up with the code for your own test executive which would govern your tests (initializing equipement, setting up test cases and test sequences, controlling the execution of the test, obtaining and storing results, logging results to a database, and finally reporting. There's a lot more involved. Take a look at NI's webpage for more info. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Friday, March 19, 2004 9:10 AM To: Info-LabVIEW Mailing List Subject: request from an experienced newbie. Hello Group, Please could someone suggest how to approach begin creating the following in LabView?... I've already done lots of procedural and event-driven programming, and have worked my way through the most part of the main LabView 7 evaluation tutorial. Background: We're about to start using LabView to create an automated test environment. We have chosen LabView over Visual Basic as we think that LV ought to manage comms and file handling more easily, and allow later modifications to be made more simply (by non-programmers) than having to wade through reams of hostile-looking code! --- Right or wrong?? Basically, we need to: 1) have on-screen buttons to let the user select different sequences of GPIB commands which are sent to a remote test instrument; 2) display messages to the user, depending on certain conditions (e.g. comms success/failure, reaching a certain point in the execution of the GPIB commands, etc.); 3) branch to and/or loop around the different blocks of required command sequences; 4) have LV interrogate the instrument for the resulting data; 5) perform operations on the data, including arrays of complex (real imaginary) numbers; 6) re-arrange the array/s and save as a .csv (comma-separated variable) flat file for use by Excel etc. As I said above, just knowing the local descriptions of the required building blocks would be a good start. Many thanks in advance, Matt Rhys-Roberts Electronics IT Engineer, UK PS. Furthermore, does anyone here ever chat online about LabView matters, e.g. on IRC, MSN, whatever? (I hope my enquiry hasn't come at a bad political time for this group!)
RE: 'cheap' DAQ units for private use
Uwe, You stated: allmost all others use some of those last-second-bet-tools. Can you elaborate on what you meant by this? Do you mean that the sellers are using some sort of autoprogram to bid up the auction at the last minute or that people like me are waiting to the last minute to bid and thus driving up the cost of the item? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Uwe Frenz Sent: Monday, February 16, 2004 2:24 AM To: LV-Info, list Subject: RE: 'cheap' DAQ units for private use Hi all, thank you all soo much for that overwhelming response. Can't answer all responders individually! There have been some very interesting hints among them - I'll check it out soon. As to the Ebay-posters: Have tried to get some interesting parts two or three times but with no success. Seems those sellers do send a quote on their own product if the best bet is'nt good enough for 'em. OR allmost all others use some of those last-second-bet-tools. So at least _I_ am done with ebay for the next future. I'll post a summary of my experience in about two weeks when I got more detailled infos. Thx again and Greetings from Germany! -- Uwe Frenz ~ Dr. Uwe Frenz Entwicklung getemed Medizin- und Informationtechnik AG Oderstr. 59 D-14513 Teltow Tel. +49 3328 39 42 0 Fax +49 3328 39 42 99 [EMAIL PROTECTED] WWW.Getemed.de
RE: Dual monitors for labview use
What is the difference in performance I could see between running two separate pci cards, one pci card and one agp card, or one dual-monitor card? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Simon Whitaker Sent: Friday, February 13, 2004 2:59 AM To: [EMAIL PROTECTED] Subject: Re: Dual monitors for labview use Hi Scott, Can anyone tell me what graphic cards work well with respect to using dual monitors and labview? How does the graphic card handle moving the display data from one monitor to another. I was considering the ATI Radeon 9800XT. Great for gaming as well. I remember someone talking about having the diagram window on one machine and the panel window on another. No more fussing around with the windows to do your work faster. We use dual monitors here, using a variety of different graphics cards. I have an nVidia GeForce FX5200 (great card, but take care if you buy one because they do single- and dual-monitor varieties), my boss has a Matrox card of some description, and one of our machines just uses two separate single-display cards. That machine runs XP, which has dual-monitor support built in, so you can use two separate single-display cards instead of a single dual-display card. In all cases, LabVIEW works just fine with them. The software we develop uses a subVI to retain the screen position of VIs and put them back in the same place next time they're launched (using the VI's Windows.Bounds property), and that has no problem coping with the dual display setup. As someone else has noted, XP and Windows 2000 treat dual monitors as one large desktop, so software doesn't need to be aware of which monitor it's running on, it just runs somewhere on that large desktop and neither knows nor cares whether that happens to be on monitor 1 or monitor 2. The only noticable difference between the various solutions we use is the facilities offered by the driver software that comes with the video card(s). My nVidia card comes with an app called nView that allows you to do all sorts of fancy things with your dual monitors, such as enabling window spanning across desktops, choosing which monitor specific apps open on, setting different wallpapers for each monitor and so on. The machine that uses two separate cards and relies on the dual monitor support built into XP lacks these advanced features, although it's still perfectly usable. If you have an XP machine with a spare PCI slot, a spare PCI graphics card and a spare monitor, try plugging the card into the PC and giving it a go - won't cost you anything, and you'll see it first-hand. Try before you buy! :-) One other off topic question. Have you guys/gals been buying and using LCD monitors? Anyone running them for a long time? I keep seeing used monitors show up on ebay that have a few/many lcds burnt out or broken in the display. How hard and expensive are they to repair if this is the case? I can solder as I'm a EE by nature. I've got an LCD monitor as my 2nd display - a fairly cheap 15 (1024x768) model that I have pivoted through 90 degrees (another feature supported by the nVidia software), making it great for working on documents. I've had it for about 4 months and haven't had any problems so far with dead pixels. We've got another LCD display that we've had for about a year, again no problems with dead pixels. Not sure how feasible it is to repair a dead pixel. Note that even new LCD monitors may ship with some dead pixels, and most manufacturers specify a tolerance level for dead pixels below which they won't replace a panel. All the best, Simon Whitaker [EMAIL PROTECTED] Software developer, Tiab Ltd tel: +44 (0)1295 714046 fax: +44 (0)1295 712334 web: http://www.tiab.co.uk/
RE: Dual monitors for labview use
Can this feature, two independent desktops be implemented in win2k or winXP? Also, regarding the potential invisible area on the screen, can't you just go to a small resolution on the larger screen so that the two screen match? I have to commend this list as I would never have thought about a dual-monitor setup if one poster (who I have forgot-sorry) had not mentioned it. I was on a website recently and they had a rack to set up multiple LCD screens on one monitor rack. I wonder what the video card would look like if trying to drive 3 or more monitors. What's out there just for grins? How expensive? I could have my labview diagram on one screen, panel on the other, dvd video playing on a third, etc. I just need to install more eyes into my head to view all of this. 8-) On Win9x however there will be just two independend desktops -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Uwe Frenz Sent: Friday, February 13, 2004 1:50 AM To: Scott Serlin Cc: LV-Info, list Subject: Re: Dual monitors for labview use Scott, you asked on Thu, 12 Feb 2004 13:26:27 -0600: Can anyone tell me what graphic cards work well with respect to using dual monitors and labview? How does the graphic card handle moving the display data from one monitor to another. I was considering the ATI Radeon 9800XT. Great for gaming as well. I remember someone talking about having the diagram window on one machine and the panel window on another. No more fussing around with the windows to do your work faster. Well, here at getemed most of the devellopers have now a dual monitor system. Most of us have matrox G550s, but almost all dual monitor cards should work well too. I had a project where the customer even wanted three large monitors. So I added two graphics cards, an ATI and a Matrox dualhead into the machine. All worked well, allthough (because of the 3 monitors) I had to use Win98 at that time. Here we come to a big caution: Win NT 2k (no knowledge on XP yet) handle multiple monitors as two windows to a large and unique desktop, whereas Win9x used to have multiple independend desktops that just had to share one side with each other. This might be important, because almost all dualhead cards I know of have an excellent head as primary head, supporting video bandwidth of up to 250 MHz (and resolutions of up to 1600*1200). The secondary head is propably less capabal, supportimg only smaller resolutions. This may result in some area on the desktop that is not displayed on any of the screens in W2k. Example: One screen with 1600*1200 left and another with 1280*1024 right aligned at bottom. The desktop will be (1600+1280)*1200 and there will be an area of (1600, 1199) to (2879, 1024) that will be invisibel. On Win9x however there will be just two independend desktops. Also, how about those kvm monitor switches? Anyone used those in conjunction with the dual monitor graphic cards? Is going with an extra PCI board as well as the ATI Radeon 9800XT AGP board the better route than running both monitors off of the same card? Thoughts? Comments? Monitor switches have to support the high video bandwidth in order not to damage signal quality. Try it out for the equipment and resolution you are trying to use. One other off topic question. Have you guys/gals been buying and using LCD monitors? Anyone running them for a long time? I keep seeing used monitors show up on ebay that have a few/many lcds burnt out or broken in the display. How hard and expensive are they to repair if this is the case? I can solder as I'm a EE by nature. AFAIK this is an internal damage that can't be repaired and never ever with a 'burning iron'. Nothing to say about your 'natural' solder art crafting. (Hope this is got as that joke it is intended to be. Joking in a foreigh language is not so easy.) The LCD producers have even defined a level of defective pixels that are considered as OK according to the production standards. Otherwise they would get too few panels being OK out of their production lines and those would be too expensive for mass market. Greetings from Germany! -- Uwe Frenz ~ Dr. Uwe Frenz Entwicklung getemed Medizin- und Informationtechnik AG Oderstr. 59 D-14513 Teltow Tel. +49 3328 39 42 0 Fax +49 3328 39 42 99 [EMAIL PROTECTED] WWW.Getemed.de
RE: 'cheap' DAQ units for private use
Have you tried ebay? I've bought a number of NI daq cards for pennies on the dollar. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Uwe Frenz Sent: Thursday, February 12, 2004 3:15 AM To: LV-Info, list Subject: 'cheap' DAQ units for private use Hi all, I am interested in doing some LV-based DAQ experiments in my home environment. Nothing important, just to check out some ideas. For that I'd need some inexpensive (not necessarily cheap) DAQ HW, that could be used in connection with LabVIEW, maybe later even with the student edn. I have done a search on searchview.net, but there was no recent posting. 'Googling' for DAQ inexpensive results in about 2k findings, but I have no clue on their quality and accessability from LabVIEW. Anyone of you with more knowledge and/or some hints, links etc.? TIA and Greetings from Germany! -- Uwe Frenz ~ Dr. Uwe Frenz Entwicklung getemed Medizin- und Informationtechnik AG Oderstr. 59 D-14513 Teltow Tel. +49 3328 39 42 0 Fax +49 3328 39 42 99 [EMAIL PROTECTED] WWW.Getemed.de
RE: Dual monitors for labview use
One clarification about the kvm switch. My second monitor is being shared with another machine via this switch since I already have a second computer. No need to buy a new monitor if this works out well. I wonder how well the switch would work with a DAQ card being routed through the SVGA monitor connections and a homemade cable. I can only imagine that the switch is just that, a switch and nothing more. I might have to make sure I do not exceed some voltage/current/power threshold. Two daqs for the price of one?
RE: Associate a type of file with a LV7 app
yes. In windows, hold down the shift key and at the same time right click on the file. Choose open with and then set the program that you always want windows to open your file with. I hope this is the info you were looking for. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Dany Allard Sent: Wednesday, February 11, 2004 10:07 AM To: [EMAIL PROTECTED] Subject: Associate a type of file with a LV7 app Hi, Is it possible to associate a type of file, like *.txt with Notepad.exe, with a LV7 app. I know that LV7 have a new feature that permit to retrieve the command line used to call the app. But I don't think that would be useful for what I want to do. I want to Double-Click on my file and my LV7 app start automatically and the file is read and displayed. Thanks Dany Allard [EMAIL PROTECTED]
Labview and windows 2000 Arggggh!!!
Has anyone had any problems copying VIs on a network from one machine to another in Windows 2k? I have rebooted both machines and keep getting this irritating message from windows that it cannot copy the VI because the VI is already in use. Why, oh why, is this happening? The permissions look ok on the machine. How do I get labview to fix the right path to its files?
Teststand help
Can anyone help me pass variables from my VI into teststand to run the pass/fail test? I'm able to get my VI to run but cannot get the info out of my VI and into teststand after the VI runs. How do I do this? How do I also pass that info into the pass/fail test? Any other teststand tips would be appreciate. Thanks. Scott
RE: Teststand 3.0 question
Thanks for the info Uwe. I'm still debating whether to use this tool or not. I do like many aspects of it but with only 30-days to evaluate it and being pressed for time on my other projects, I just can't tell. Since one has to have certain variables coming out of the VI in order for teststand to communicate with the VI, I have to modify a lot of my previously written code. Also very time consuming. Can you elaborate more on this statement of yours below. So if I understand you correctly, I cannot use LV6.1 to do this? I have some old machines that don't have the harddrive space to accomodate LV7.1. I would have to update their harddrives which is simple to do but do I want to pump more money into an ailing machine or just go out and get a few new ones. After a while, it doesn't make sense to put money into an outdated machine. 2. You can define locals, parameters and different types of globals in TS and 'connect' those with fitting data types on the connector pane of the VI. This works only in the cooperation of TS3 and LV7, AFAIK. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Uwe Frenz Sent: Friday, January 30, 2004 3:25 AM To: Scott Serlin Cc: LV-Info, list Subject: Re: Teststand 3.0 question Scott, You wrote: Does anyone know how to set up teststand in order to pass parameters into and out of a VI? I just evaluating it right now to see if it is worth buying. I have a lot of VIs that I wrote previously and wanted to try to insert them into teststand with a minimum amount of effort. Any suggestions? I'm trying and working with TS3 since about a year. Constantly switching between 'Woow, what a great product' and 'What the heck do they mean with that' resp. 'What was the name of that damned variable?'. It is quite easy to call a VI and to pass data between both sides. There are two ways. 1. You can pass an activeX ref to the VI and use SubVIS to pass data between LV TS. There are several examples in TS. 2. You can define locals, parameters and different types of globals in TS and 'connect' those with fitting data types on the connector pane of the VI. This works only in the cooperation of TS3 and LV7, AFAIK. But an update to Dev Suite Test Edn is higly recommended as it costs not soo much more than simply buying TS alone and you get amoung others a one year SSP. I still can not tell you if TS is worth its costs _for_us_. It is a really complex product. But is is for sure not as easy to handle like NIs marketing tells us. The best 'poor comparision' I have found is TS is like a helicopter - a very powerfull tool, but one needs a lot of expertise to operate it. And, what I am troubled most with, is, it is much more C-related than LV-related. So often I end transfering even simple processing into a simple VI rather than doing it in TS, because of my missing C competence. There is a rather dead Info-TestStand and a more frequented forum on NIs pages for TS. But until now I was unable to find anyone here in Germany that is using TS and is willing to share competence like here on this list. I hope for the German NI Days VIP2004 in March... Greetings from Germany! -- Uwe Frenz ~ Dr. Uwe Frenz Entwicklung getemed Medizin- und Informationtechnik AG Oderstr. 59 D-14513 Teltow Tel. +49 3328 39 42 0 Fax +49 3328 39 42 99 [EMAIL PROTECTED] WWW.Getemed.de
Teststand 3.0 question
Does anyone know how to set up teststand in order to pass parameters into and out of a VI? I just evaluating it right now to see if it is worth buying. I have a lot of VIs that I wrote previously and wanted to try to insert them into teststand with a minimum amount of effort. Any suggestions?
RE: State machine diagram editor
Paul, Can you elaborate further on where the OpenG toolkit can be found with the Set Enum String Value VI? Is it part of the professional development suite? LV7.0 or LV6.1 or both? I have 7.0 but have not upgraded from LV6.1 yet because I do not like to redo code that is already working. On that note and this will most likely spawn another thread here, how does everyone deal with upgrades on the SSP? Does everyone just upgrade and fix all issues that come about from the upgrade or do people do what I'm doing and hang back for a while until the time is right to make the upgrade. I usually end up leap-frogging my versions. I take big jumps rather than little steps. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Paul F. Sullivan Sent: Sunday, January 18, 2004 6:11 AM To: Mark Smith Cc: [EMAIL PROTECTED] Subject: RE: State machine diagram editor Mark, You wrote: ... I use string driven state machines instead of enum type defs when I want to create a scriptable state machine. That is, the state sequence is driven by a text file that has information about what order the states are executed. This means the test sequence can be modified in the field using any text editor... The OpenG toolkit has a Set Enum String Value VI that would allow a text script to run an enum-based sate machine. I didn't know about the OpenG VI when I first needed this capability so I built a Set Enum with String VI that works with control references. If you'd like that, just let me know. -- EnWirementally, Paul F. Sullivan SULLutions (781)769-6869 when a single discipline is not enough visit http://www.SULLutions.com
State machine diagram editor
Can anyone tell me what the state machine diagram editor toolkit does and which version of labview it is part of? Thanks in advance. Scott
RE: State machine diagram editor
Thanks for the info. I was hoping for a faster way to add and modify states to the state machine. Also, does anyone have any state machine tips that they can share? I typically use a string driven state machine. I then call out each state from other states. I also use a nextstate local variable so that I can reuse particular states in the machine over and over again and not have to replicate the state throughout the machine. Let me and the email list know your tips. Thanks. Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Friday, January 16, 2004 7:48 AM To: [EMAIL PROTECTED] Cc: Info LabVIEW (E-mail); 'John' Subject: Re: State machine diagram editor Rolf K. wrote: I have looked at the State Machine Toolkit and believe that it is fine for the standard state machines a lot of users usually encounter but my state machines usually always tend to be just a tiny little bit more involved so that I would have to hand edit the generated state machine afterwards anyhow and once modified manually you can't seem to go back to continue with the State Diagram Editor. The inability to go back to the editor after you manually edit is true of most computer-aided wizards. The fundamental problem is that the wizard knows how to maintain a state machine under certain conditions and how to modify various pieces when you change something in the editor. Once you introduce a non-standard component, the wizard has no idea how to handle that component as the system changes. The once-you-manually-edit-you-can't-go-back-to-automatic problem covers the State Machine, Express VIs, and a lot of tools built by just about every piece of helpful software ever written on this planet. It requires either a sophisticated AI to recognize all the components that can be introduced into a system by a user or a very restricted set of things the user can introduce. Notice how HTML editors handle non-standard tags. Pojundery, Stephen R. Mercer -= LabVIEW RD =- I do not believe that Hell is a physical place. I believe that Hell is an hour of the morning. -- Jan 16, 2004
RE: State machine diagram editor
Hi John, I do not have any controls to access in my vi state machine. As an example, I control a piece of equipment that labview turns on, gets some measurements, logs those measurements to a database, and then shuts down. I do not access any front panel controls to run my via. All of that is done through a test executive. My state machine is set up by placing a string in each case statement that refers to the next state. The initial string is set outside of the while loop that makes up the state machine. Can I still utilize the strict type def enum solution in a similar manner or better? Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Howard, John Sent: Friday, January 16, 2004 12:49 PM To: [EMAIL PROTECTED]; Scott Serlin; Thorpe, R. Mark Subject: RE: State machine diagram editor One tip that I would offer is to consider using a Strict TypeDef Enum to drive your state machine rather than a string. Part of the reason for this is to prevent accidental coding errors such as mis-typing a string or forgetting to implement a case. Also, if you further develop your state machine into a component (based on LabVIEW Component Oriented Design (LCOD) - see the book A Software Engineering Approach to LabVIEW for details) which uses a LV2 style global approach to locally contain component information, the Enum turns into a very simple way of accessing the components functions. (perhaps I should have broken up that 'sentence' a little) One minor drawback is having to save the Strict TypeDef Enum in a separate .ctl file. However, I have also taken advantage of this when implementing multiple components which share the same states/functions. Anyway - just my thoughts. John Howard Scott Serlin 01/16/04 12:17PM Thanks for the info. I was hoping for a faster way to add and modify states to the state machine. Also, does anyone have any state machine tips that they can share? I typically use a string driven state machine. I then call out each state from other states. I also use a nextstate local variable so that I can reuse particular states in the machine over and over again and not have to replicate the state throughout the machine. Let me and the email list know your tips. Thanks. Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Friday, January 16, 2004 7:48 AM To: [EMAIL PROTECTED] Cc: Info LabVIEW (E-mail); 'John' Subject: Re: State machine diagram editor Rolf K. wrote: I have looked at the State Machine Toolkit and believe that it is fine for the standard state machines a lot of users usually encounter but my state machines usually always tend to be just a tiny little bit more involved so that I would have to hand edit the generated state machine afterwards anyhow and once modified manually you can't seem to go back to continue with the State Diagram Editor. The inability to go back to the editor after you manually edit is true of most computer-aided wizards. The fundamental problem is that the wizard knows how to maintain a state machine under certain conditions and how to modify various pieces when you change something in the editor. Once you introduce a non-standard component, the wizard has no idea how to handle that component as the system changes. The once-you-manually-edit-you-can't-go-back-to-automatic problem covers the State Machine, Express VIs, and a lot of tools built by just about every piece of helpful software ever written on this planet. It requires either a sophisticated AI to recognize all the components that can be introduced into a system by a user or a very restricted set of things the user can introduce. Notice how HTML editors handle non-standard tags. Pojundery, Stephen R. Mercer -= LabVIEW RD =- I do not believe that Hell is a physical place. I believe that Hell is an hour of the morning. -- Jan 16, 2004
RE: bad news?
Looks like Microsoft is trying to get into NI's space here. SoftWire is a graphical programming extension for Microsoft Visual Studio .NET Maybe NI should got after MS and Softwire on antitrust as well. Let's hope they all settle out of court. I'm just starting to get comfortable with NI. I don't want to add Softwire to the mix. Besides, [EMAIL PROTECTED] would have to be set up. 8-( -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of John Howard Sent: Tuesday, January 13, 2004 8:16 AM To: [EMAIL PROTECTED] Subject: Re: bad news? I should have included the link to the original article. Here it is: http://email.controleng.com/cgi-bin2/DM/y/efVG0GDREC0GXT0B6Ni0An John Howard [EMAIL PROTECTED] 01/13/04 09:00AM Here is an article from a recent Control Engineering newsletter... SoftWire's patent infringement lawsuit against NI to proceed Middleboro, MA?Measurement Computing Corp. and SoftWire Technology Inc. recently announced that the U.S. District Court in Boston granted on Nov. 5, 2003, the two firms' request to allow SoftWire to charge National Instruments (NI) in a pending lawsuit with infringing two patents owned by SoftWire. Judge Robert Keeton delivered the ruling over NI's objections. Subsequently, SoftWire filed an amended complaint accusing NI's LabView product of infringing two of SoftWire's patents. SoftWire alleges that LabView infringes on two virtual instrument technology patents that SoftWire originally acquired from Fluke Corp. These two patents reportedly predate the earliest of NI's patents. SoftWire is seeking unspecified damages for past sales of LabView. SoftWire is also seeking an order prohibiting NI from continuing to sell LabView.
RE: Oracle database question
Thanks everyone for the database help. I will work with everyone's suggestions. -Original Message- From: Scott Serlin [mailto:[EMAIL PROTECTED] Sent: Friday, January 09, 2004 2:50 PM To: info-labview Subject: FW: Oracle database question Can anyone tell me if it is possible to treat an Oracle database like a giant array? More to the point, do I have to always write a complete record (or row) of data into a table or is there a way to place a piece of data into one single column within the row and come back later and place a different piece of data in the same row but different column? Example: I wrote the first piece of data like this: Table testtime testdate dut serialnum productline 12:00 Later on I wanted to add another data point in the same row but different column while still maintaining the data previously entered: Table testtime testdate dut serialnum productline Can I do this? Is it allowed in Oracle? 12:00 100100 Once the row is complete, I would move onto the next row. Table testtime testdate dut serialnum productline 12:00 010603 1100100 widget 1:00 010603 2100101 widget
State machines and passing references
Can anyone tell me if it is possible to pass a connection reference throughout a state machine? So far I have not had any luck.
RE: State machines and passing references
Hi Michael, Let me try it. I've been trying to right-click the case statement and not the while loop. This appears to be an oops on my part. Thanks again. Scott -Original Message- From: Michael Aivaliotis [mailto:[EMAIL PROTECTED] Sent: Monday, January 12, 2004 2:14 PM To: Scott Serlin Cc: info-labview Subject: RE: State machines and passing references Should be no problem. I assume you mean through a shift register, no? Michael Aivaliotis Can anyone tell me if it is possible to pass a connection reference throughout a state machine? So far I have not had any luck.
