Synchronize a read from a Ctr and a 3AIs on a cDAQ system

I am trying to synchronize 2 load cell readings from a 9237 module, a voltage reading on a 9215 and a angular position from ctr0 using a 9421 module.
My ultimate goal is to read and write this data to a file simultaneously at a frequency of 10K.
Thanks for any help.

Info in this thread should get you on your way. http://forums.ni.com/ni/board/message?board.id=170&message.id=244811

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How to read two text files using the Read from spreadsheet.vi and then plot it

I need to read two text files using the read from spreadsheet function and then plot these files over time.
The file with the .res extention is the RMS values (dt and df) and the second file contains the amplitude of a frequency spectrum.
I really appreciate any help..thanks
Attachments:
RMS.txt ‏1 KB
FREQUENCY.txt ‏1 KB

From NI Example Finder:
Write to Text File.vi
Read from Text File.vi
Jean-Marc
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Trouble reading from serial instrument and DAq simultaneously.

Greetings,
I am having some trouble getting my VI to read from my DAq and a serial instrument at the same time. If I run the subVI's simultaneously (i.e. subANG is running in one window and subVEL is running in a second window) both return the proper values and behave as I would expect. However, if I call the subVI's into a parent VI and try to run them both in the same loop structure subANG gets stuck and will not resond with a change in signal.
I have also tried to use a stacked or flat sequence to separate out the execution of subVEL and subANG, but I still get the no response from subANG.
The most confusing thing is that if I run Parent.VI in one window and then create a copy of subANG (call it '....-copy' or whatever) and run it in a second window, Parent.VI behaves properly and will refresh the readings as they appear in '...-copy'.
I have attached 3 files.
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(3) ParentVI.VI     -This simply calls and displays the subVI's
My guess is that it is a buffer issue, but I am stumped. Does anybody out there in Labview land know why this might be happening? All suggestions welcom.
Solved!
Go to Solution.

I am noticing it is not an NI DAQ card. How are you communicating with the DAQ? If it is using a serial port, that could be your problem.
I also highly recommend using the VISA drivers for serial communications instead of the serial.llb VIs.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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I am trying to sync iphone 5 to itunes but it says "iTunes could not connect to the iphone as an error occured while reading from the device " and the iphone is not seen on itunes........

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import java.nio.channels.*;
import java.io.*;
import java.util.*;
import java.text.*;
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I want to know how to take the data from interactive forms and load the data into sap system?
if u have any sample scenario, explain with that.
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Hello,
Check the program...
SAPBC480_DEMO.
Check the below threads
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/88e7ea34-0501-0010-95b0-ed14cfbeb85a
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Mike,
you were right, you may not specify the extension of a file.
Another thing i detected is that the loop of my data start with the index 1 instead of 0 !!!
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so that i can use the result to build my sales document.
Do you know if it this is possible or have you any idea how to do this ?
thx,
Mario

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Read from csv file and plot particular columns

Hello,
I`m a new user of Labview and here it comes...my first major problem.
Maybe this has been discussed before. I’ve made a search to solve my problem first but I couldn`t find anything helpful so I `ve decided to post a new message.
So here is my problem:
I`m working in a small semiconductor lab where different types of nitrides are grown using proprietary reactor. The goal is to read the collected csv files from each growth in Labview and plot the acquired data in appropriate graphs.
I have a bunch of csv files and I have to make a Labview program to read them.
The first part of my project I`ve decided to be displaying the csv file (growth log file) under labview (which I think works fine).
The second one is to be able to plot particular columns from the recipe in graphs in Labview (that one actually gives me a lot of trouble):
1. Timestamp vs Temperature /columns B and D/
2. Timestamp vs Gas flow /columns L to S/
3. Timestamp vs Pressure /columns E,K,T,U,V/
I`ve got one more problem. How can I convert the Timestamp shown in csv file to human readable date in labview? This actually is a big problem, because the timestamp is my x axis and I want to know at what time a particular process took place and I also want to be able to see the converted timestamp when displaying csv file at first. I`ve read a lot about time stamping in excel and timestamp in labview but I`m still confused how to convert it in my case.
I don`t have problems displaying csv file under Labview. My problems are with the timestamp and the graphs.
Sorry for my awful English. I hope you can understand my problems since English is not my mother language.
Please find the attached files.
If you have any ideas or suggestions I`ll be more than happy to discuss them.
Thank you in advance.
Have a nice day!
Attachments:
growth log.csv ‏298 KB
Read from growth log.vi ‏33 KB

Hello again,
I`m having problems with converting the first column in the attached above file Growth Log.csv.
I have a code converting xl timestamp to time and using Index Array traying to grab a particular column out of it but the attached file is written in strings so I guess I have to redo it in array but I don`t know how.Would you help me with this one?
Attachments:
Xl Timestamp to Time.vi ‏21 KB

How to Read from two file and write to another file --Please help !!

Hi all,
Please suggest me where i'm goin goin wrng.
I have 2 flat files. one of them is the main file(Ann.dat) has a about 150,000 lines (each line has unique ID from 00001 to 45000) of data and the the other(Miss.dat) has a just a list of IDs that are no longer in use & have to be deleted from the first file(NewAnn.dat). (Note that Ann.dat is a tab delimitted file and Miss.dat is just a list of all invalid IDs)
Below is my code. It doesn't do what I'm supposed to. Please suggest me or help me with a code to do it. What I'm trying to do is read each of the lines from the 2 files compare the ID in ann.dat with all the IDs in Miss.dat & if it doesn't match with the ID in Miss.dat write the whole line to NewAnn.dat. And do the rest with all the lines in Ann.dat.
It could be a real dumb question. since i'm not a software professional, I consider myself to be newbie to programming. I desperately need your help.
import java.io.*;
import java.util.*;
public class anntemp{
     public static void main(String[] args)
          String keyAnn ="";
          String keyMis="";
          String recAnn =null;
          String recMis =null;
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          int couter=0;
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          FileReader fr1=new FileReader("C:\\Tom\\Miss.dat");
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          while((recMis = br1.readLine())!=null){
          keyMis = recMis.substring(0, recMis.indexOf("\t"));
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Thank you all in advance,
br

I think you need to close the files when you are done in the inner loop. Plus I think you'll be overwritting the file in the inner loop if more than one match. It might be easier to read the unused id file into a map at the start, and then loop up the id's from the master file in the map. You can put the unused id's in as the keys, and a Boolean.TRUE as the value (value won't matter). Then just check if the map contains the key for the id read from the master file. That should cut down on disk activity. This assumes the unused id file is smallish.

Reading from a .txt and displaying in XY graph with time stamp

Hi,
I am a newbie to LAbView. I need to read from a text file having two columns, one carrying the temp value and other the time stamp. I need to plot this in XY graph on a real time basis. Please help as how can I do this..
I am attaching my files for your reference.
Thanks in advance
Ratnesh

Shidla wrote:
So what is the question about... I have to use XY graph in my program. It is used in Loop while cycle. It shows the statistic of a variable. I am using cursors in this graph to check the actual value of a variable in different period of time. But there are 7 variables and it is extremely hard for user to check each value independently. So I tried to make them moving on the X axis (TIME) together using the property node (cursors reading the position (only X axis, Y axis status lock to plot) of the major cursor and follow it... Everything looks great? But it did not work when I am trying to move the major cursor manually on graph... It works only when I am using the cursor movement buttons... But they work very slowly when there is a lot of data in graph.
I want to find out is it possible to make seven coursers mouthing together By the X axe and be Locked each at its plot by Y axe manually (Using mouse moving on a graph). Is it possible? If it is than how to do it?
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The attached VI should help give you an idea of how to create a VI that allows all cursors to move together. The main idea is to keep track of the current location of all cursors and move all of them when you see a change in one's position.
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-Matt F
Keep up to date on the latest PXI news at twitter.com/pxi
Attachments:
cursors.vi ‏164 KB

Read from .txt file and output the content as two arrays

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R.75.txt ‏172 KB

Hi Awen,
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When my feet touch the ground each morning the devil thinks "bloody hell... He's up again!"
Attachments:
read sprdsheet file.vi ‏27 KB

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Hi All,
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SetUp:
I have an Oracle DB on one dedicated Server, to which I only have a read_only access.
I have a MySQL database setup on a windows server 2008, both are on the company network and accessible to internal employees only.
Problem Statement:
I need to read certain tables from Oracle DB and push the records to MySQL database.
I have a stored procedure which was doing this but from one Oracle Schema to another, which is running fine, now I need to use the same stored procedure but read from one database (Oracle) and write to another database (MySQL), is there a way to do this through the stored procedure, I know I can write a java program to do this, but need to do it through a stored procedure.
Appreciate any help in this regards.

c5b4a91d-d35a-43ba-ac96-6d1821541d33 wrote:
Hi All,
I am fairly new to database administration, so please bear with me if this is something that is simple or not achievable at all -
SetUp:
I have an Oracle DB on one dedicated Server, to which I only have a read_only access.
I have a MySQL database setup on a windows server 2008, both are on the company network and accessible to internal employees only.
Problem Statement:
I need to read certain tables from Oracle DB and push the records to MySQL database.
I have a stored procedure which was doing this but from one Oracle Schema to another, which is running fine, now I need to use the same stored procedure but read from one database (Oracle) and write to another database (MySQL), is there a way to do this through the stored procedure, I know I can write a java program to do this, but need to do it through a stored procedure.
Appreciate any help in this regards.
Start here: http://docs.oracle.com/cd/E11882_01/server.112/e25494/ds_concepts.htm#i1007709

Synchronize a read from a Ctr and a 3AIs on a cDAQ system

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