Reading relative position on multiple axis

Hi all,
I need to read the relative position on two axis via the encoders. I have open loop steppers with encoders. I can read the encoder position on one axis easy enough be we need to read the encoder position of two axis simultaniously. I have looked at high speed capture but this only supports one axis. We have the top end motion card 7358. Taking two reads of the encoders a different times is not good enough for our application - any ideas? I guess I could write a DSP program, if this is the answer does anyone know of any examples? I was hoping there would be an easier way to solve this challenge.
TIA
-Martin
Certified LabVIEW Architect

Dear Martin.D
To effectively measure and monitor the position of the encoders, use the DAQmx functions. And use a digital trigger with the source as the encoder channel that starts recording data as soon as the encoder is initialised. Look at the Cont Acq & chart samples Int-Clk-Dig Start VI in the examples or from NI.com examples and use this for your two lines. Set the sample clock for both lines as the same so that both are synchronised. The VI is an adaptation on the example using the two lines. Set your relevant sources and what outputs you desire. Please let me know how you get on with this.
Xiaofengliu, your -70006 error code typically corresponds to an error on the axis input. If you receive this error code when using a Load DAC function, it is
most likely due to an improper 'DAC' input. This error is common when
using the flex_load_dac function in a text based programming language.
The DAC input requires a resource identifier for the DAC to be used.
This identifier is not just a simple number, but rather a hex id number
unique to each axis. The resource IDs for DAC outputs are listed below.
Please see the link I have attached below to guide you through and resolve your error:
http://digital.ni.com/public.nsf/allkb/6484CBEC9C43189486256FDB004CF7F6?OpenDocument
Many thanks for using the NI forums and I look forward to your reply.
Kind regards
David
Applications Engineer
National Instruments UK

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WHEN I TRY TO OPEN A PDF FILE, THE READER OPENS HUNDREDS OF MULTIPLE BLANK PAGES .

I TRIED TO OPEN A PDF FILE ALL I GET IS HUNDREDS OF EMPTY PAGES
WHAT IS THE PROBLEM WITH ADOBE 9 READER?
OTHER PEOPLE CAN OPEN THE SAME MSSG WITH NO PROBLEM

I DID THE UNINSTALL AND INSTALL DID NOT SOLVE PROBLEM
STILL OPEN MULTIPLE EMPTY PGS
WHAT CAN I DO?
Date: Wed, 14 Apr 2010 10:28:56 -0600
From: [email protected]
To: [email protected]
Subject: WHEN I TRY TO OPEN A PDF FILE, THE READER OPENS HUNDREDS OF MULTIPLE BLANK PAGES .
Something is definitely wrong with your install of Reader.
A PDF consists of only the number of pages it was created with. Reader can and will only open those pages... IF it's installed and working properly.
Opening multiple blank pages from a document which contains none is a clear sign that the software isn't functioning. It's like putting a movie into a DVD player, and your TV starts a picture slide show of your last Summer's vacation. Not possible unless there's something seriously wrong.
Uninstall Reader 9.
Use either Adobe's clean uninstaller or Windows Installer Cleanup Utility (http://download.microsoft.com/download/e/9/d/e9d80355-7ab4-45b8-80e8-983a48d5e1bd/msicuu2. exe) to remove all Reader installer files from your system.
Reinstall Reader 9 from a new download (do not use the old one if you still have it on your system)
>

Change labels of multiple axis in xy-chart

Hi,
I want to programmatically change the labels of the axes in a xy-chart with two y-axes.
I can easily manage this for the x-axis and the first y-axis. But I can't find how to access the properties of the second y-axis. How to do this?
Steven
LV 7.1 - 8.2

There is a property named "Active Y Scale".
In dictates which of the multiple axis you are going to act on.
Set it to the index of the axis you want to change BEFORE setting the label.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

White space below footer due to Relative Positioning?

I'm pretty new to coding. I'm learning how to do a responsive website and everything is working, EXCEPT for the huge blank space below the footer at the largest screen resolution. I know it is because of the relative positioning I used for the "samples" section. I know this question has been asked before. I've tried the suggestions, but cannot seem to get it to work. I cannot figure out a way to accomplish having the "samples" section at the spot I want without using relative positioning. I've tried "float" to no avail.
Everything is working, except for the huge space below the footer at the largest screen size for my responsive page.
Instead of pasting my .html and 3 .css files here, here is my site of which you can right click and "view page source" to get all the code. Don't want to make my question look too long!
Here: grc198.orijenaldesigns.com
Any help would be much appreciated!

Hi,
Please share the URL of the web site.
Regards,
Abhishek Maurya

What function is used to read Angular Position form a Task?

I have created a DAQmx task in MAX. This task configures a counter on a PCI-6259 to take the A and B counts from an encoder and give the Angular Position. What function do I use to read the value since I am no longer reading counts I am reading the position?
Thank you in advance for any advice!
John O'C
Staff Test Systems Engineer
Woodward, Inc.
Skokie, Illinois, USA
"Life is not a journey to the grave with the intention of arriving safely
in a pretty and well preserved body, but rather to skid in broadside,
thoroughly used up, totally worn out, and loudly proclaiming...
Wow...What a Ride!"
Solved!
Go to Solution.

Hi Izzy,
I have Created the task in MAX. The task takes input into the counter from an encoder and converts it to angular position. Do I still use the DAQmxReadCounterF64 function to read the counter? I am guessing that I do and that the function returns the angular position rather than the raw counts. Not sure though.
Thanks for taking the time to respond.
Regards-
John O'C
John O'C
Staff Test Systems Engineer
Woodward, Inc.
Skokie, Illinois, USA
"Life is not a journey to the grave with the intention of arriving safely
in a pretty and well preserved body, but rather to skid in broadside,
thoroughly used up, totally worn out, and loudly proclaiming...
Wow...What a Ride!"

Reading relative position on multiple axis

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