CONTROL E INSTRUMENTACION DE PROCESOS

Hola a todos los saludo cordialmente y les agradesco de antemano su ayuda :
soy un estudiante de ingenieria y me e propuesto a especilizarme en el area de control e instrumentacion pero nesecito saber a la perfecion LABVIEW ,nesecito que me ayuden a explotar al maximo este sofware, me podrian enviar algunos tutoriales o enlaces o paguinas que me ayuden a entender como debo programar y cuel es el orden que debo llevar,
emvien tdo lo que puedan o loque ustedes deseen gracias
gracias por su ayuda bye les estare eternamente agradesidos

Hello,
It is difficult to simply send examples or tutorials. What I suggest is that you prepare a small programming exercise. Try reading some of the posts that are similar to what you want to do. The better way is to actually take a course. I can look for some of the on-line tutorials, but I believe they are in English.
Have you done any Labview programming to date?
Hola,
Es difícil simplemente enviar ejemplos o tutoriales. Lo que yo sugiero es que usted prepare un pequeño ejercicio de programación. Trate de leer algunos de los puestos que son similares a lo que quieres hacer. La mejor manera es en realidad tomar un curso. Puedo ver a algunos de los on-line tutoriales, pero creo que son en Inglés.
¿Ha realizado alguna de LabVIEW programación hasta la fecha?

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Sistema de control de procesos edibon

holas
voy a comenzar a controlar un sistema de control de procesos llamado UCP/UCPCN/ UCPCV de la marca edibon.
pero no encuentro los dirver de la national instrument en los cuales aparecen ya programas basicos para uno manipular.
la tarjeta que usa es PCI6221
necesito los comandos de este equipo.
si alguin a trabajado con esta maquina le agradeceria el favor

Buenas mgd88p,
Hay ejemplos dentro de LabVIEW que usan ese dispositivo, normalmente son funciones de DAQmx las que se utilizan. En este link podes ver como se encuentra los ejemplos, algo muy importante es que en la parte inferior podes buscar el dispositivo así los ejemplos que salen son los compatibles.
También podes leer este sitio que funciona como introduccón al mundo de control de dispositivos con LabVIEW.
Saludos,
National Instruments

Quiero usar iCloud Control Panel en el trabajo

Tengo windows 7 y quiero usar iCloud Control Panel para sincronizar mi agenda laboral con los calendarios de iCloud.
¿Alguien sabe cómo hacerlo funcionar si tengo por medio un proxy?
¿Hay manera de hacerlo?
Gracias por la ayuda,
Juance.

En tu caso, no hay ningún problema ya que sólo tienes una licencia a la Creative Cloud, que te autoriza el uso, no simultáneo (concurrente) de Photoshop en dos ordenadores, en cualquier momento puedes optar por actualizar o no a la versión más reciente, actual, del programa.
Esa es una de las ventajas del sistema de subscripción obligatorio Creative Cloud.
En modo alguno afecta al límite de duración de tu subscripción, puedes instalar una versión y actualizar tantas veces,como lo haga el programa, algunos introducirán mejoras de forma periódica, cada tres o cuatro meses.
La alternativa es no aceptar las actualizaciones. Puedes hacerlo en un ordenador y no en el otro.
Lo más lógico es actualizar, porque cada revisión corrige algunos fallos (esperamos que no introduzca otros) e incorpora nuevas funcionalidades y posibilidades, un proceso que va a ser continuo e inmediato, antes sólo era posible cuando se lanzaba la siguiente versión cada año, año y medio o dos años.

Control Difuso, vision artificial y arduino

Buenas tardes, me encuentro realizando mi proyecto de titulo, el cual consta de un manipulador mecanico que el cual tenga la capacidad de mediante vision artificial y un control difuso.
Obteniendo las coordenadas de una imagen, serian las entradas para el sistema difuso, y sus salidas seran 5 servomotores el cual la interface entre ellos sera un arduino mega.
Ya he obtenidos coordenadas de objetos, me falta implementar el fuzzi para poder controlar el sistema, necesito sugerencias para poder realizar el sistema y variables linguisticas para poder ingresar en servos.
Para ello me encuentro realizando dos rutinas en un VI, una para el apartado de vision y el otro para el apartado de servos.
Me asalta la duda si debo realizar un archivo para cada servomotor o los puedo implementar todos en un archivo?
De entemano y atento a sus comentarios.
Muchas gracias

Si bien es cierto y comparando con los ejemplos que trae el Software, ya que posee programaciones bastantes extensas, yo para el apartado de visión de e limitado los recursos es decir, e usado estructuras event, case y además probando de la instrumentacion visa para poder comunicar la interface de arduino y no las paletas de arduino propiamente tal, ya que al haber leido de manuales, tutoriales y demáses, me he percatado de que la respuesta del software disminuye al integrar otra aplicacion o interface en este caso.
Obviamente haciendo referencia de que tal vez el sistema operativo del computador que estoy usando no se encuentra tal vez dedicado a magnitudes de aplicaciones tan complejas.
¿Para el caso mencionado es posible realizar el VI de manera efectiva, es decir la aplicacion de logica difusa tomando como entradas las coordenadas que entrega el apartado de vision y realizar la programacion de salidas del control difuso en base a las posiciones de los servos?
Atento y en espera de vuestros comentarios, los saluda atte.,
Raúl B.

Pid control de temperatura con un ventilador y resistencia

buen dia, necesito hacer un proyecto para la universidad.
necesito hacer un PID que controle la temperatura de una resistencia mediante un lm35 y un ventilador.
porfavor si algun me puede ayudar se lo agradeceria .
de antemano muchas gracias

Que tal ps3fer, gusto en saludarte.
Quisiera compartir contigo la siguiente información que te orientará a realizar tu proyecto para el control de temperatura utilizando PID. En el siguiente link se muestra la teoría con respecto a sistemas de lazo cerrado, la teoría clásica del PID, los efectos de sintonización en un sistema de control de lazo cerrado, así como también una introducción al uso de las librerías de PID de LabVIEW y una ejemplificación de un control PID con tarjetas de adquisición de datos de NI.
PID Theory Explained
Con la finalidad de utilizar las funciones de LabVIEW para el control PID es necesario tener instaldo el PID and Fuzzy Logic Toolkit. A continuación te comparto información relevante de este toolkit:
LabVIEW 2013 PID and Fuzzy Logic Toolkit Readme
PID and Fuzzy Logic Toolkit Help
Así como también una liga de descarga para la versión 2013 de LabVIEW (en dado caso que poseas una versión distinta, te recomiendo busquemos la versión correspondiente del toolkit en www.ni.com):
LabVIEW 2013 PID and Fuzzy Logic Toolkit
De igual manera en la siguiente liga encontrarás la información correspondiente a la función PID de LabVIEW.
PID VI
Por último, tal como comentó code-lux, en la opción de "Help>>Find Examples" de LabVIEW podrás encontrar diversos ejemplos de control PID. De manera particular te recomiendo revises el ejemplo llamado "General PID Simulator.vi"; este ejemplo simula una planta o proceso y mediante la función PID logra estabilizar la variable del proceso hacia el set-point. Este ejemplo te dará una idea de la estructura que debes seguir para controlar tu variable de temperatura.
Espero esta información te sea de utilidad y cualquier detalle estamos al pendiente.
Saludos!
Juan Arguello
National Instruments México y Latinoamérica
Applications Engineer

Issue in creation of control cycle

Dear Gurus,
During creation of control cycle (LPK1), the fields for source information is not appearing in my system.
I compared control cycle in a different ECC system where source information is appearing.
How can make the screen appear in my ECC system.
Please find the screenshots.
Any pointers will be highly appreciated.
This thread is further to the threads in Production Planning and LE/WM Forum. I could not resolve the issue with the threads.
Hope that I will get any pointer in EWM forum.
http://scn.sap.com/thread/3609441
http://scn.sap.com/thread/3610822
With Regards,
Malay

Hello Malay,
Can first contact your ABAPer and ensure the bottom screen is not an Screen Enhancement?
If it is a some custom development, your ABAPer can help you on the logic behind it.
Else, Let us know.
Regards,
Sathish

IF-statement in Personas that is checking if control is inactive?

Hi,
I have this simple script in screen personas that is clicking the option: "Attachment list". Everything is working great if there is attachments.
If there are no attachments the option is "inactive" or "greyed out". This will result in a script error.
I thought this was going to be an easy fix by adding IF statement to the the script. But howerver I specify the critera for the IF statement the script will always try to click the Attachment list. The condition will simply always be TRUE.
Am I missing something here or is it not possible at this time to script an IF statement that is checking if the control is inactive or similar?
Best Regards,
Oskar Söderlund

There is another way, but it will get a little tricky.
Outside of the transaction IE03 you can check for the existence of attachments for a piece of equipment by looking in table SRGBTBREL. Field TYPEID_A will be "EQUI" and field INSTID_A will be the equipment number, zero-padded on the left to 18 characters long. Use SE16 to look in the table and you'll get the idea.
You could wrap this test in an RFC-enabled ABAP function and call that from your Personas script button. Use the return value from that RFC to decide if attachments exist or not and how the script should respond. Details for how to write such an RFC and call it from a Personas script are in this blog: Calling RFCs from a Personas script.
Like I said, this isn't straightforward and perhaps Personas scripting should include an active/inactive test in addition to the exists/doesn't exist test. Until then, however, there is a way if you don't mind a bit of ABAP programming.

ANY SY-INDEX REFLECT CHANGES WHEN CONTROL BREAK STATEMENT PROCESS

Dear Guru's,
                 I have a requirement where i have to move the values to variable when control break (AT END OF) process. So i want to move the values according to the end of Vendor so for that i want to know is there any sy-index available which reflects changes when Control break (AT end of) process.
LIKE Sy-subrc = 0 when select statement fetches record or sy-tabix is like counter for loop.
Hope to get reply soon.
Regards,
Himanshu Rangappa

Hi,
There is no system Fields for it.
But your requirement can be done with 'AT NEW' and 'AT END' statement.
Refer this sample example,
loop at otab.
    at new module.
      move otab-module to otab2-module.
    ENDAT.
      at END OF effort.
      sum.               "Do your calculations here
      move otab-count to otab2-count.
      append otab2.
    endat.
endloop.

Using AiO Remote and HP ePrint to remotly control printer

Hi,
With ePrint Home and Biz and the previous version of the AIO remote app, I was able to control the scanner and printer as long as I remained connected to the Internet. In other words, I did not have to be within reach of the wireless network at home to be use the wireless features of the HP Office Jet Pro 8600. I cannot find the way to scan or copy any documenta even if not at home. All these could be done if there was someone at home who would be able to place the documents on the glass.
Is this feature available the HP connect and current ePrint?
Thank you,
Alvaro A.

Hello traveler021,
Welcome to the HP Support Forums!
Regarding your question about the AiO Remote app and ePrint when trying to scan or copy with the Officejet 8600, you have to be on the same WiFi network.
The AiO Remote app does not allow you to control scanning or copying over the Internet. I do apologize for being the bearer of bad news, but this is not available without being on the same network.
Regards,
JERENDS
I work on behalf of HP
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Lenovo AIO C440 - not working infrared remote control

Hello,
is there any hint how to get infrared remote control working for a new C440 model? Tomorrow I will try to measure and/or replace batteries which could be bad. For now it is totally not working.
Another question: the remote should work only within AverMedia TV app or in the whole Windows 8?
Regards,
Zdenek

hi bohdik,
Welcome to the Lenovo Forums.
The IR Windows Media Center remote control is for use with C440 models with optional TV tuner. If you have this model, make sure the TV Tuner driver and the ITE CIR Driver from the lenovo support site are installed under Device Manager (press Windows Key+R then type devmgmt.msc) then follow the Set up a TV signal in Windows Media Center. guide.
Note:
You must have Windows 8 PRO to enable Windows Media Center
See this articles in reference:
How to add Windows Media Center to Windows 8 Pro
How To Install And Set Up Media Center On Windows 8
Hope this helps
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
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Issue with Period Control 03 for Depri key MSTL with 6446

Hi Gurus,
We want to use mid-month calculation for Dep. key MSTL using period control 03 (i.e. 03/03/03/03). We are also using 6446 as year-depedent Fiscal year (i.e. Jan and Dec 6 weeks other rest 4 weeks). period control 03 is pro rata at mid period
period 12 for 2009 start 11/14/09 ends 12/25/09
period 1 for 2010 start   12/26/09 ends 02/05/10
as per period control 03 mid month is Dec-04-2009 (setup in OAVH)
When i acquire an asset on Dec-04-09, the dep start date is Nov-14-09 which is correct and all calculation is correct
however when i acquire an asset on Dec-06-09 the dep start date is still Nov-14-09 which is not correct infact it should start dep from next month which will be Dec-26-09 (This is 1st period of Fiscal year 2010)
As mentioned above we are using 6-4-4-6 fiscal year
When acquiring an asset with mid month concept at year end we are facing problem in depri start date and hence calculation.
The setting in OAVH for period control 03 are as below
FV   Period Control     Desc.                             Year   Month   Day    Period    MidMonth
NL        03              Pro rata at mid period          2009    12        4         12           ticked
NL        03              Pro rata at mid period          2009    12        25       12           ticked
NL        03              Pro rata at mid period          2009    12        31        1            ticked
NL        03              Pro rata at mid period          2010    1          15        1            ticked
Thanks in advance

Deepak,
Your period 12/2009 starts and ends between 11/14/09 ends 12/25/09. Now you acquire an asset on 12/4/2009. As per OAVH, you want depreciation calculation start mid-period. Then how is depreciation start date of Nov 14, 2009 for this case?
Then you acquire an asset on Dec6, 2009. This, as per OAVH, falls into period 12/2009. Then why should the calculation start from period 1/2010 for this case?
Thanks,
Asheesh

Jabber Windows - no phone control with LDAP Custom filter

I am unable to control the desktop phone from the Jabber 9.1 Windows client when the CallManager LDAP Directory uses a Custom Filter.
Has anyone else experienced this?
If I set the LDAP Custom Filter to <none> and save, then Desktop Phone control works great.
If I set it to use my custom filter, then trying to enable Desktop control just gives me the spinning circle, then times out to the Red X symbol.
I do not need to resync the LDAP Directory to get the error, just enable/disable the custom filter and save.
In both cases calling from the Computer works great.
This is an On-Prem deployment with full MS-AD LDAP integration.
Versions are:
Jabber - 9.1.0 build 12296
CUPC - 8.6.4.11900-1
CUCM - 8.6.2.22900-9
I upgraded to CUCM 8.6.2 SU2 last night hoping that would fix the problem, but no luck.
The LDAP filter is one I have used in numerous other clusters with no CTI issues.
It allows me to sync to the root directory, but only import active user accounts with an entry in the ipPhone AD attribute:
(&((objectclass=user)(ipPhone=*))(!(objectclass=Computer))(!(UserAccountControl:1.2.840.113556.1.4.803:=2)))
Thanks, Randy

Hi Randy,
Have you specified this base filter in jabber-config.xml file? As per Admin Guide:
"In some cases, base filters do not return query results if you specify a closing bracket in your Cisco Jabber for Windows configuration file. For example, this issue might occur if you specify the following base filter: (&(memberOf=CN=UCFilterGroup,OU=DN))
To resolve this issue, remove the closing bracket; for example, (&(memberOf=CN=UCFilterGroup,OU=DN)"
Thanks,
Maqsood

Get selected values from Listbox control

Hi All,
I'm still new to SL so please bear with me.
I have a ListBox being bound with some records from a DB. Here's the xaml:
<ListBox x:Name="lstClassSeries" SelectionMode="Multiple" DisplayMemberPath="Description" Grid.Row="11" Grid.Column="1"></ListBox>
What I need is to get the values of the items that were selected and I can't seem to get it to work. I've tried looping through the SelectedItems but there's no property for value or text. I even tried to cast the item as a ListBoxItem but I
get the following error:
Unable to cast object of type 'UI.Silverlight.TransactionService.DTODropDown' to type 'System.Windows.Controls.ListBoxItem'.
How can I get the values of the items selected?
Thanks

You're using windows forms style techniques with xaml.
This is a bad idea.
You ought to learn MVVM.
You probably don't think you want to learn it, but trust me on this one.
Learn MVVM as soon as you can.
There's a selecteditems collection.
You have to cast to listboxitem, it has a content property which you cast to whatever you put in there originally.
Here's a snippet.
I have a class foo, load a bunch of them in. Do stuff. Work out what's selected in the click event of a button.
public class foo
public int id {get;set;}
public string description {get;set;}
public partial class MainPage : UserControl
public MainPage()
InitializeComponent();
lb.Items.Add(new ListBoxItem{Content=new foo{ id=1, description="a"}});
lb.Items.Add(new ListBoxItem { Content = new foo { id = 2, description = "b" } });
lb.Items.Add(new ListBoxItem { Content = new foo { id = 3, description = "c" } });
private void Button_Click(object sender, RoutedEventArgs e)
List<foo> selectedfoos = lb.SelectedItems.Cast<ListBoxItem>().Select(x=>x.Content as foo).ToList();
Hope that helps.
Recent Technet articles: Property List Editing;
Dynamic XAML

Open and close posting period authorization control TCODE: S_ALR_87003642

HI All,
Is there any chance to control the user to open and close another company code posting period variant in TCODE: S_ALR_87003642.
In our system we are using the same client for different countries. So user can able to change the other country company code posting periods.
We would like to control either on the country (or) organizational unit(company code) (or) posting period variant so that user can only open/close their country / company code posting periods.
Our present authorization role for open and close posting period contain the auth.Obj. : S_TABU_DIS.
Please share your knowledge if you come across this problem..
Thanks in advance..

Hey Sandhya,
Congratz, this can be done using linbe item authorization with the object S_TABU_LIN.
Field ORG_CRIT - Value 02
Field ORG_FIeld1 - Value ZT001B
We have successfully done it in our client.
You need to contact your BASIS consultant for this.
Thanks,
Nitish

Timing control signal and data acquisition

I have a series of relays which when activated will close different elements of a circuit and I also have a sourcemeter(Keithley) sending a constant source current and reaing the voltage back.(But when no relays are closed the circuit is open and no source current flows )
I have a microcontroller(pgmmed for 9600 baud rate) based hardware circuit which closes different relays sequentially based on the input it recieves from labview pgm passed on through a Rs232 cable(9600/8 bit/no flow control)
So i made a sequence structure of sending signal to microcontroller signal then wait for the signal transmission and realy activation and then read the voltage value form keithley sourcemeter back to labview thro a GPIB cable.
These three events are reapeated sequentially in a while loop.
A schematic picture is attached.
BUt the problem I ma facing is the maximum speed of reading is limited to 200msec/reading even thought the relay activation time is as low as 30 msec.
I tried with many different delay times (140-60 msec...but more or less each reading takes up 200msec irrespective of the delay time..)
What could be the bottle neck is it the Rs232 setting at 9600 baud rate..can changing that to higher baud rate/including flow control solve this problem?
Attachments:
daq_printscreen.GIF ‏45 KB

siva0182 wrote:
Find attached the picture of the vi where I tried to put in timers.one in each of the frame and at the end added one more frame just to measure the time elapsed .
The last frame and the frame with sourcemeter measurment show adifference of about 140 msec.
Is there any way to improve the speed of this portion?
Probably not. It sounds like the Keithly VI is taking 140 msec. You can try opening that up to see if there is anything in there that could be causing an unnecessary slowdown. But trying to tighten it up too much may cause occasional errors (such as timeouts) in trying to get a response back.
But surprisingly I tried displaying the actual timer value at the start and at the start of sourcemeter read function ..but the display of both indicators is almost equal with little difference of only 10 msec.????? I'm not sure which of the several timers you are referring to here. What is the value going into the wait function between the VISA write and the Keithly VI?
When you do benchmarking, the timer functions should be in a frame all by themselves. Having it mixed with another function or VI causes a bit of uncertainty as to when the time was taken. For instance, you dont' really know if the Keithly VI was started before the time was taken or after. (The time was probably taken first, but without a data flow or sequence structure dependency, you can't be sure.)

CONTROL E INSTRUMENTACION DE PROCESOS

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