Event Driven Programming is withheld from LabVIEW Base.
Can anyone give me a good answer why? Every other programming language in the world has Event Driven Programming (EDP) built in, even free languages. So when all I wanted was to use LV as a graphical programming language, (hey, that's what the "G" in G-programming stands for) I was disappointed to find that in my undervalued LV Base I can't look for mouse movement, mouse enter, mouse leave, keyboard actions and countless other possibilities that would be standard fare in any other language, unless, I pay over 1200 dollars more for the Full development package. I know I should have read up on it more before purchasing, and understood what I would be missing out on. But how was I to know that the fundamental programming function of EDP would be considered on par with Data Acquisition and Signal Processing? So basically in order to get a complete programming language, I need to spend more than twice the cost of the Base package just to receive the last key component. And all this because the Evaluation of LV gives you near limitless possibilities, so a new LV programmer gets used to having these tools at his/her disposal, only to yank some of the most critical tools. So after saying all this, I am pleading for an explanation. Why isn't there at least some add-on module that would allow a user to install the withheld functionality of EDP to a Base Development package? Surely making money is the goal of any business, and I won't claim bait and switch here, or any other wrong doing here. But there is, in my opinion, a marketing misjudgment here.
-Orion Williams
Unfortunately to upgrade, it would cost me the difference between the base version and the full version. What I think is in order is an add-on module that will give customers the functionality of EDP, without having to also pay for signal processing, which is clearly a more robust programming tool, that I don't need. I am hoping to show NI that by withholding EDP from the base version with no upgrade option except paying for the full version, that their customers who come into LV at the base version are getting an undervalued version, and they know it, and that without at the very least, and add-on module for EDP, isolating smaller business and individuals. I agree that signal processing, data acquisition and EDP are worth an extra 1300 dollars, but I don't agree that EDP on it's own is worth an extra 1300 dollars, but that's the only option that I have at this moment. My suggestion is to create an add-on module that includes EDP and sell it for 300 dollars, since I know signal processing is a much more complex feature and is worth more of that upgrade price than EDP. Of course all versions of LV should include EDP, so if that drives the price of LV base up, so be it. Just don't let anyone else be fooled into thinking they are buying a Graphical Programming Language unless all the features of a programming language are included at all price points. Can I get a witness?
Similar Messages
-
Periodic reading data with event driven programming
Hi all
I want to read data from a device periodically, for example every 2 seconds.
but I want to use event driven programming in order to response user events.
now I don't know how to do this......!!
maybe I should use timed loop or timed sequence structure
if I use this structures, should I use then inside the while loop or outside the while loop( I mean the while loop that contains the event cases)?
please help me and accept my thanks....You ned to run these in two separate loops. Look at the Producer/Consumer template. Put a two second time-out on the Dequeue Element and you have a loop that will run every two seconds. The loop should also handle information from the event structure.
Separate loops is the best way of handling this.
Rob -
Hello Everyone,
I am new to this forum and also new to event-driven programming. Anyways, I am doing a small exercise to get myself familiar with event-driven programming. In particular, the program responds to keys entered on a keyboard. The exercise in a way resembles how a second hand moves in a clock. So, here's what I am trying to do. Originally the hand points at 12 o'clock. when I press the right arrow key the hand should move 6 degrees to the right and when I press the left arrow key the hand should move 6 degrees to the left. The code I have so far seems fairly correct to me but when I run the program and press the arrow keys on my keyboard nothing happens. Any help would be appreciated and thank you in advance.
Here is my code:
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
public class hittingBalloons extends JFrame{
hittingBalloons(){
mouseKeyboardListeners p = new mouseKeyboardListeners();
add(p);
p.setFocusable(true);
public static void main(String[] args){
hittingBalloons frame = new hittingBalloons();
frame.setTitle("Hitting Balloons");
frame.setSize(500,500);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
public class mouseKeyboardListeners extends JPanel{
private int xCenter=250;
private int yCenter=250;
private int xEnd =250;
private int yEnd =210;
private int angle=0;
private int gunLength=40;
private int xBall = 150;
private int yBall = 150;
private int radius = 20;
public mouseKeyboardListeners(){
addKeyListener(new KeyAdapter(){
public void keyPressed(KeyEvent e){
if(e.getKeyCode() == KeyEvent.VK_LEFT){
angle = (int)(angle - (Math.PI/30));
xEnd = (int)(xCenter + gunLength*Math.sin(angle));
yEnd = (int)(yCenter - gunLength*Math.cos(angle));
repaint();
else if (e.getKeyCode() == KeyEvent.VK_RIGHT){
angle = (int)(angle + (Math.PI/30));
xEnd = (int)(xCenter + gunLength*Math.sin(angle));
yEnd = (int)(yCenter - gunLength*Math.cos(angle));
repaint();
protected void paintComponent(Graphics g){
super.paintComponent(g);
g.drawLine(xCenter,yCenter,xEnd,yEnd);
}A few notes and suggestions:
1) Welcome to the forum!
2) When posting code, please use code tags as it makes your code easier to read. the FAQ will show you how. e.g.,
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
public class hittingBalloons extends JFrame{
hittingBalloons(){
mouseKeyboardListeners p = new mouseKeyboardListeners();
add(p);
p.setFocusable(true);
public static void main(String[] args){
hittingBalloons frame = new hittingBalloons();
frame.setTitle("Hitting Balloons");
frame.setSize(500,500);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
public class mouseKeyboardListeners extends JPanel{
private int xCenter=250;
private int yCenter=250;
private int xEnd =250;
private int yEnd =210;
private int angle=0;
private int gunLength=40;
private int xBall = 150;
private int yBall = 150;
private int radius = 20;
public mouseKeyboardListeners(){
addKeyListener(new KeyAdapter(){
public void keyPressed(KeyEvent e){
if(e.getKeyCode() == KeyEvent.VK_LEFT){
angle = (int)(angle - (Math.PI/30));
xEnd = (int)(xCenter + gunLength*Math.sin(angle));
yEnd = (int)(yCenter - gunLength*Math.cos(angle));
repaint();
else if (e.getKeyCode() == KeyEvent.VK_RIGHT){
angle = (int)(angle + (Math.PI/30));
xEnd = (int)(xCenter + gunLength*Math.sin(angle));
yEnd = (int)(yCenter - gunLength*Math.cos(angle));
repaint();
protected void paintComponent(Graphics g){
super.paintComponent(g);
g.drawLine(xCenter,yCenter,xEnd,yEnd);
}3) For key listeners to work, the component must have the focus, and JPanels don't get focus by default. You have to call setFocusable(true) first and then request focus in window on the JPanel.
4) Even better would be to use key binding, and to learn to use these, check out the Sun tutorial.
Luck and again, welcome! -
Data base from Labview Base, possible?
I would like to sent my generated testreport(.txt) into a database. So that every report from every test is stored in a Data Base.
Is this possible with LabView Base 7.1 or do I have to buy Developer suite?
How do you do this?
Regards Fredrik C
(Database newbie)There is an example VI which
"This VI shows how to send data to an Access database through a macro.
For more information, on Access macros refer to the Access manuals"
No additional tookits would be required.
Search for "Sending Data To Access.VI" from the examples -
Program slow down from Labview 6.1 to 7.1
I was using simplePID to control a sequence of temperture control. The program is in two independent while loops. one is for DAQ and output control, one is for generating the setpoint sequence for the PID controller. The DAQ is updating temperture every second using AI acquire waveform. I use local variable for communication between the two loops. The code run well in Labview 6.1. When I try to run the same code in 7.1, it took more than 11 sec for one loop, the temperature updating every 11 sec or so. I am just wondering what's wrong with labview 7.1? The program structure is simple enough. Anyone met similar problem before?
Thanks!This could be an issue discribed in the Knowledge Base. You should update to LV 7.1.1 which is a free update.
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions -
Problem with drawing chart in event driven programming and XControl
Dear my friends
I have a xcontrol, that has two buttom and a chart. i want to do this:
1- when i press the "start" button chart starts to add random numbers
2- when I press the "stop" button the start should stop drawing random numbers.
I mean after pressing the start the chart should add points until I press the stop button.
also I add "start button value change" event case and i put the code inside that event.
but when i press the start the chart adds one point.
using while loop inside a event case is not good for adding extra points.
can someone help me how to do this?
I oppologize due to my weak english.....An Xcontrol immediately returns after each Read or write. It should not stall the calling VI. It is not something that should run for extended periods. You can use a plain reentrant subVI, for example.
If you want to learn about Xcontrols, have a look at the dual mode thermometer (or similar) that is included with the example finder.
LabVIEW Champion . Do more with less code and in less time . -
Dear Fellow LabVIEW programmers:
Most of the systems you deal with are reactive. It means that their
primary function is constant interaction with their environment by
sending and receiving events. But most likely, they can have something
happening inside them too, even when they are not processing messages
received from outside. So, such systems have to continuosly react to
external and internal stimuli. Right? Moreover, most likely, they
consist of subsystems that are reactive too and, in turn, can have
their own "life", to an extent independent from other parts (with
which they still communicate, of course). Reactive (event-driven)
systems are more naturally modeled with active objects. So, why then
should we try to model and code them with GOOP and its passive
("dead"!) objects?
"Flat" State Machines have been known for decades to have severe
limitations. It's been more than 20 years since Dr. Harel invented
Hierarchical State Machines (statecharts) to fight those limitations.
Then why does NI still tout the same old good Moore FSM as the
ultimate tool for event-driven programming in LabVIEW in its $995
State Diagram KIt?
The LabHSM toolkit we are happy to present, makes it possible to
easily create and then maintain complex event-driven applications in
LabVIEW as a collection of HSM-driven active object VIs using a higher
level of abstraction and agile software development methodologies.
These active object VIs are created based on a universal Hierarchical
State Machine ( HSM or statechart ) template. So. all your code looks
similar regardless of its functionality!
We all love just jump to code, right? However, to be good boys, we
need to do design first. Then implement it in code. If the logic is
modified we need to redo the design first and then redo the code. When
using LabHSM where behavior information is abstracted into a separate
HSM data file editable with a supplied editor, there is no need for
coding separate from design any more. The modified behavior becomes
code automatically as soon as the HSM file is saved. Design is code!
The implementation basically follows Dr. Samek's Quantum Programming
paradigm. (see http://www.quantum-leaps.com). However, as already
mentioned, LabHSM stores the behavior information in a file separate
from the code itself. It also adds state dependent priorities to
events, a separate queue for public events/messages, and, of course,
some LabVIEW specific code like capturing front panel user events and
putting them into the private Events queue. Communication and
instantiation functions are also rather specific for LabVIEW.
It is available for UNLIMITED PERIOD trial. Please visit
http://www.labhsm.com for details and download. The site also contains
references which you may want to check to learn more about
hierarchical state machines and active object computing.
Since this is our debut we will appreciate any comments and
suggestions. Our contact information is available on our site, of
course.
Have a G'day!Symtx is currently hiring the following position. Please contact me if interested.
Amy Cable
Symtx, HR
[email protected]
Symtx, the leading supplier of functional test equipment, hires the brightest & most talented engineering professionals to design & manufacture complex custom electronic systems for advanced technology leaders in the defense, aerospace, communications, medical, transportation & semiconductor industries. Symtx’ challenging & dynamic work environment seeks to fill openings with highly qualified electronic engineering design professionals.The ideal candidate will be responsible for defining the requirements, software design and code development, and integration of test control software for custom functional test systems. Candidate should be familiar with data acquisition concepts, instrument control, complex test, measurement and calibration algorithm development and definition and implementation of control interfaces to hardware. Prefer familiarity with instrument control via GPIB, VXI, MXI, RS-232 desirable. Requires BS/MSEE and 3 -7+ yrs of experience in one or several of the following test applications in a Windows NT/2000/XP environment using Labwindows CVI, TestStand, Labview, Visual Basic, C++ and knowledge of RF systems is a plus. Job responsibilities will include software design, development, integration, team leadership, and interfacing with customers( includes PDR’s & CDR’s). -
Send a keyboard event from labview to C#
Hi,
We currently have a program in c# that takes keyboard inputs from a user and will fly a quadrotor. We aim to have a LabView .vi generate keyboard commands based on our experiment and send the commands to the c# code creating a feedback loop where the .vi will keep track of sensor and experimental data.
Our problem is that we have tried many different methods to send the keyboard commands in LabView.
1) http://zone.ni.com/devzone/cda/epd/p/id/3711
2) http://forums.ni.com/t5/LabVIEW/Send-keyboard-commands-to-another-windows-program/td-p/330670/page/2
as well as other variations and similar .vi's that do the same thing. Here is an example of a .vi used to press the letter "t" once.
http://i.imgur.com/hwmjZ.png
All of them can write the string to a text (open notepad put cursor in blank window) file but none can do it in such a way that it is detected by the c# code. On my own I can open and run the c# code and press keyboard buttons myself and the commands are recognized, so I think it could be an issue with how LabView sends the keyboard events and how c# reads them. Here is the c# code segment that we are using to read the input commands:
public override List<String> GetPressedButtons()
KeyboardState state = device.GetCurrentKeyboardState();
List<String> buttonsPressed = new List<String>();
foreach (Key key in Enum.GetValues(typeof(Key)))
if (state[key])
if (!buttonsPressed.Contains(key.ToString()))
buttonsPressed.Add(key.ToString());
return buttonsPressed;
Can anyone help trying to figure out why using the keybd_event function in LabView can not interface correctly with the above detection code in c#? I can provide any code and clarification if you think it can be helpful.
Thanks,
AndyHi,
I can't say with certainty where the problem is or even how many there are. I do know that the KeyboardListener.cs class should work according to what I have read online. I also know that if I press the keyboard myself then the state is changed and the correct action is taken. If I try to issue an event from Labview then the event is not captured. Here is the code, it is rather large ~20 MB.
https://www.dropbox.com/s/vsvcje1ro364otu/ARDrone.zip
https://www.dropbox.com/s/p3h3tj8bcqc29gk/Forward_backward0924.vi
The key listener is in ARDroneInput>Utils>KeyboardListener.cs and the polling takes place in ARDroneInput>KeyboardInput.cs
The reason I wanted to use keyboard inputs is because the quadrotor we are using takes keyboard commands W,A,S,D,T and L. Initially I thought having Labview issue these commands would be the simplest method. That may not be the case.
I was just thinking that it is not necessary that key events are sent from Labview. Instead, one could send an array representing the frequency of each button press rather than the button press directly. In that case an array that is updated continuously from Labview will just have to be kept track of in the C# code. The C# can then convert that to whatever control input we want. Can it be easier to send a vector of numbers in real time to C#?
If you think it is better to establish a connection between Labview and C# using .NET to send keyboard commands (rather than the vector idea above) can you explain that a little more? How does one go about doing that? If you think the vector idea is simpler how should the interface be set-up?
I just talked with my collegue and we think that maintaing a .txt file in Labview and having C# read it is the best option. We will begin working on that and will update you tomorrow.
Thanks,
Andy -
Simulate event structure in LabVIEW base?
I have a LabVIEW base version (v8.6) which does not have the event structure. I found it was quite inconvenient to monitor the status of several controls (the action after click a control depends on the status of other control(s)). Especially if I want to add another function (control), the effort increase exponentially with the existing number of controls
I got an idea of simulate the event structure using 'Shift Register'. First, I will bundle all the values of controls into a cluster. Then I will put the cluster in a while loop, and compare the value of the cluster with its previous value (xor the shift register). If the compare result is false (none of the control is changed), the program goes to next iteration. If the XOR result is true (one of the control was changed), then the program goes into event handling code (it will pass which control has changed, and the whole cluster). So for each control change, we can write a independent code to process the event. After processed the event, the event was cleared.
The following is a section of my ugly code currently used to monitor several controls. And I am thinking of rewrite it using above idea so that there will be less likely a hiden bug.
Any comments of suggestions?
Message Edited by RyanWu on 10-23-2009 10:16 AM
Solved!
Go to Solution.
Attachments:
UglyLabVIEWCode.png 18 KBBen wrote:
Altough this is an interseting academic question, we really can't duplicate the efficiency of the Event structure so springing for an upgrade is highly recomeneded.
But I am not here to sell LV but rather help LV developers so...
Start by developing an Action Engine with the following actions.
1) Init -caches control ref for all controls and indicators for which you need an event. Optionally rest them and cache their state.
2) Check - Will compare the current state with the prvious state and any changes get pushed onto a stack in the AE and if there are elements in the stack (due a change detected now or one left over form the last check) and returns a type-def'd enum describing what changed. Multiple changes should be on the stack for next time.
3) Get New - will return the new value of the value requested via an Enum.
In you top level VI use the AE to Init before you run and then use an "Check" method to se if anything changed. If it flags a change (boolean output of AE) then the Enum is used to select the proper case of a case structure. Inside the psuedo-Event case, you can use teh AE with the "Get New" action and pass the enum to choose which value to get.
It is hardly an Event Structure but it should come close.
Ben
But after looking at Knickerbocker's* post we can go farther.
Put the above code in a sub-VI that feeds a queue. Then you can monitor the queue for updates just like in an event structure AN you can queue up all of the changes at once and can ingore my mention of caching the change methods in the AE. Just let the queue handle the stack.
Ben
*Kudos for inspiration!
Message Edited by Ben on 10-23-2009 10:54 AM
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction -
I would like to build a data base in teststand which collect data from labview program , if you have example (sequence) that give me some way to build sequence that have step of action for labview and step
data baseThere is an example in the \TestStand\Examples\Database directory. Basically there are two ways to connect to your database.
1. You can use the TestStand database step types. There are steps for opening/closing a database connection, opening/closing an SQL statement, and a step for performing a data operation.
2. The other way is to use the TestStand database logging capability to write your results to the database. This is the way I would recommend. With database logging, you use the step results container to record all your results as the sequence runs. (This is done automatically by TestStand). When the sequence is complete, the process model calls a "Log to Database" sequence that will write the results to the database. You must define your datab
ase schema using Configure->Database Options. There are some default (or example) schema definitions already defined. Refer to chapter 18 of your TestStand manual.
Another way to log the data as the sequence is running is shown in the \TestStand\Examples\OnTheFlyReports. This has the advantage of recording data as it is obtained, but it is not as efficient in terms of using a database connection. I don't recommend using this method.
Please post again if you have any more questions. If you are using stored procedures with your database, I can probably give you some tips.
Mark -
How to call another program from LabVIEW?
Hi!
Is there anyone that can answer my question? I have found a similar thread where the user needed to call labVIEW from some program but I want to do the opposite.
I made a program in labVIEW that communicates via COM-ports (serial communication) with the processor I use at the job (Ubicom´s IP2022).
Now I want to add more funcionality to this program. I want to be able to program re-program IP2022 through this LabVIEW application.
The programming is done via an Ethernet-dongle. I start a program called IP2kProg, I write the ip-address of the dongle and the program-file (.elf) downloads at this address. But how can I do this from
LabVIEW, do I need to open IP2kProg or can I send some values to it via LabViEW?
Ant suggestions?
Thanks, AmirAmir,
There are couple of options:
1. If your IP2kProg program has a command-line interface, you can use LabVIEW's System Exec.vi and send the commands and parameters to it.
2. If the IP2kProg has an API / exported functions, you can call them from LabVIEW using the Call Library Function Node.
Hope this gives you some ideas.
-Khalid -
A new version of the unique toolkit is now available for download. As announced earlier, LabHSM makes it possible to easily create and then maintain complex event-driven applications in LabVIEW as a collection of HSM-driven active object VIs using a higher level of abstraction and agile software development methodologies. These active object VIs are created based on a universal Hierarchical State Machine ( HSM or statechart ) template. Therefore, all your code looks similar regardless of its functionality!
So, what’s new in version 1.1.1?
The code (made in LabVIEW 7.0 for Windows) now comes complete with block diagrams (password protected).
Simpler debugging code in the full template.
Extra menu items in the editor to open VIs as well as HSM files - nice to have when the LabHSM editor is the only VI open.
Copying of default actions is now implemented correctly.
No more run-time licenses! Just buy a developer's license once and distribute as many applications as you like!
The "Demo_" prefix is no longer required for VIs created in the trial version.
No more nag messages while running your HSMs!
As before, the LabHSM toolkit is available for UNLIMITED PERIOD trial. Please visit http://www.labhsm.com for details and download. The site also contains references which you may want to check to learn more about hierarchical state machines and active object computing.
Stanislav Rumega
NI Certified LabVIEW Architect
H View LabsSymtx is currently hiring the following position. Please contact me if interested.
Amy Cable
Symtx, HR
[email protected]
Symtx, the leading supplier of functional test equipment, hires the brightest & most talented engineering professionals to design & manufacture complex custom electronic systems for advanced technology leaders in the defense, aerospace, communications, medical, transportation & semiconductor industries. Symtx’ challenging & dynamic work environment seeks to fill openings with highly qualified electronic engineering design professionals.The ideal candidate will be responsible for defining the requirements, software design and code development, and integration of test control software for custom functional test systems. Candidate should be familiar with data acquisition concepts, instrument control, complex test, measurement and calibration algorithm development and definition and implementation of control interfaces to hardware. Prefer familiarity with instrument control via GPIB, VXI, MXI, RS-232 desirable. Requires BS/MSEE and 3 -7+ yrs of experience in one or several of the following test applications in a Windows NT/2000/XP environment using Labwindows CVI, TestStand, Labview, Visual Basic, C++ and knowledge of RF systems is a plus. Job responsibilities will include software design, development, integration, team leadership, and interfacing with customers( includes PDR’s & CDR’s). -
Problem of security using ADO from Labview to connect to Access 2000 Data Base
I have a problem using ADO from Labview to connect to Access 2000 Data Base.
First I open a ADO_DB_Engine and create a Workspace as an ODBCDirect. After I execute the open_data_base using the workspace. Here you can specify the parameter connect with /type of connection / user / password.
The problem is the following:
Although you configure a password for the Administrator user in Access, you can read/writte to data base from Labview using ADO without any security and without putting the user and password in the parameter connect. I need to access with security to data base using users and permissions but it seems that the parameter connect does not operate.
I attach
you a example of the vis and database. Remember create a ODBC connect with BD3.mdb
Thanks a lot
Peter Mst
Attachments:
SECURITY.zip 70 KB
BD3.mdb 112 KBHi Kahn,
If you use ADODB_connection -> Connection.Open and set in connection string :
"Provider=Microsoft.Jet.OLEDB.4.0; Jet OLEDBystem Database=c:\.....\Protegida5.mdw; Password=pepe;user ID=jose; Data Source:c:\......\BD5.mdb";
and after connection.execute ->
INSERT INTO tabla1 VALUES (5,'XXX'
you will be able to access to the database with security using the provider=Microsoft.Jet.OLEDB.4.0. With this provider you have to use the path and the name of the database file c:\.....\mdb file. From this way the problem is solved. (SEE SAMPLE_ADO_W2_JET.VI).
BD5.mdb have the following administrator user: user:jose / passwordepe (Protegida5.mdw)
The problem is when you want to
use ODBC and DSN. The name of this ODBC Provider is MSDASQL;. If you use this type of connection you can not enter to the database I attach you.
This database has a new administrator owner. I deleted the default administrator. If you support the default administrator you can connect to database by ODBC / DSN but the security disappear because you can always enter to database with any password, user o PC.
FINALLY I HAVE 3 QUESTIONS FOR Application Engineers of National Instruments or someone who knows these subjects before deciding the best way to connect locally o remotely with security to Access from Labview:
1.- Is it possible to enter to Database BD5.mdb from ODBC and DSN with this owner?
2.- I want to connect remotely to Access database too. Is it possible to use Microsoft.Jet.OLEDB.4.0 using the path (.mdb file) without DSN?
3. Which is the optimal Provider for Microsoft Access?
I thank you beforehand for your technical support.
Peter Mst.
Attachments:
BD5.mdb 116 KB
Protegida5.mdw 112 KB
sample_ADO_W2_JET.vi 45 KB -
How can I control a base ACCESS from labview ?
Hi,
I'm working on a projet on labview and ACCESS and I want to say how can I do to control a database from labview ???
Thanks in advance
Cordially,
HasnaOn Tue, 9 Jul 2002 02:50:12 -0700 (PDT), kiki wrote:
>could you give me more informations about Database Connectivity
>Toolset ???
>
>I notice that we can write data in excel file thanks to an ActiveX but
>is it possible with a table ACCESS ??
DCT it's a suite of VIs (I think Optionals) the contains anything you
need to connect to to a DB.
I used them with access... since I'm not really happy with performance
(read/write max 50 records/sec) it's quite quick to develop
applications that read/write DB.
(Write a Cluster it's trivial.... plug the cluster, prepare a table
with fields of the same type and the same order, yo've did it)
I think you can also use ActiveX, but I've never did. -
Huge Basic Price Drop for LabHSM Toolkit for advanced event-driven development
Dear fellow LabVIEWers :
I am happy to announce that to increase the attractiveness of the LabHSM toolkit the basic price was just dropped from about $1,000 to just $249!
As our website says, the price is not set in stone (even this new low one!). We encourage the prospective clients to make us an offer and we promise that no reasonable offer will be refused. So, some people have already done exactly that – told us a price they could afford and we sold them LabHSM at THEIR price. However, it seems to us that too many people don’t like the (too high in their opinion) basic price but still don’t notice the “Make us an offer” option (despite very large font and bright color) and/or just hesitate to make an offer. We hope that the new, significantly reduced basic price will make the toolkit more attractive to those folks who don’t like to negotiate.
About LabHSM:
LabHSM is a professionally designed toolkit that allows creating complex event-driven LabVIEW application as an easily maintainable collection of asynchronously communicating active objects ( actors ) based on a universal Hierarchical State Machine ( HSM or statechart ) template. The LabHSM toolkit enables the programmer to work on a higher level of abstraction and utilize agile software development methodologies combining design and coding in one highly flexible process.
Stanislav Rumega, CLA
H View Labs
http://labhsm.comAn update: I am still in Milwaukee, Wisconsin, USA. The current client ran out of projects for me,
so I am ACTIVELY looking now. An updated resume is attached. If you are in US and any farther from me than Chicago, relocation assistance is highly desired.
Again,
I am so fed up with US immigration "process" (almost NINE years here LEGALLY and green card is nowhere in sight!) that would SERIOUSLY consider UK, Australia, Canada, EU if somebody is SERIOUSLY willing
to help with the papers and relocation.
An updated resume is attached.
Recent achievements:
1. A couple of test stands for testing high voltage (15kV, 27kv, 38kV) high current (up to 100A) reclosers. Those devices are used by electrical utilities companies. They are made by Cooper Power Systems. It's sort of a big three phase breaker but with the brains - it's own computer. Very sophisticated device. It is programmed at which currents and for how long to wait before opening the circuit, when and how many times to try to close it again before locking out, etc. See http://cooperpower.com/Products/Distribution/Reclosers/ for more info on.
2.Updated the David Boyd's famous Tunnel Wiring Wizard to make it work with LV 8. See LAVA forums: http://forums.lavag.org/index.php?s=&showtopic=211&view=findpost&p=9207
3. Created a Property and Method Selection (PMS :-)) Assistant to simplify access to undocumented (private) properties and methods in LabVIEW 7 through 8 - very useful for anybody experimenting with VI Scriping features. Again, see it on VI Scripting LAVA forum:
http://forums.lavag.org/index.php?s=&showtopic=2662&view=findpost&p=10812
Attachments:
Stanislav Rumega Resume 05-2006.doc 96 KB
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