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Re: error -2147220719

Hi, thanks for your reply. I tried several times restarting the software, the computer, unplugged the usb connections and re- plugged in but nothing helps. It just happened all of a sudden, and the...

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Re: Channel OFF/ON program

I think that values are not properly written to VISA write 

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Re: fpga

RavensFan,Thanks for the quick response. Yes, the picture didn't turn out as expected. I stripped out the loop in question from the FPGA code and posted it here. I am able to get as far as your...

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Re: fpga

Let's try again. I thought I could attach the vi but can't seem to figure that out either. So here is the picture again with the resto the loop shown. Maybe now the discussion can continue.

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Re: fpga

Here

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Re: Channel OFF/ON program

I solve the problem, topic closed. :)

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Re: Independent Sample and log rates

I changed daq portion to daqmx rather than daq assistant express but still lost with writing data to file every 0.5 seconds. Thanks 

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Re: fpga

I can't actually run your code because I don't have the hardware.  I have never used block memory before, so I can't comment on that. Otherwise, it seems like your code should work.  My only comments...

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Re: Channel OFF/ON program

Please tell us what the solution was.  Give us the satisfaction of knowing how it was solved considering the time  and effort we put into trying to help you solve the problem.  And if anyone in the...

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Re: Independent Sample and log rates

Your screenshot doesn't show anything trying to log the data! Attach Take the boolean output from the Timer express VI and wire that to a case structure.  Inside the true case, put your data logging...

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Re: fpga

RavensFan, For some reason I am really struggling with this snippet feature. The controls you mentioned started life as simply constants used to initialize the shift registers. There is no need for...

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Re: fpga

There must be some sort of Block Memory Read function.  You could run that in a separate loop that will iterate through the addresses and pull the data out. What other code do you have running?  Do you...

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Re: fpga

The application consists of FPGA code, Real Time code and Host code on a PC for the HMI. I do not have any code at this time to collect or display this data. For some reason I'm not able to fugure out...

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Re: Two loops and questions about arduino

A couple of optimization thoughts, which the compiler might already be doing (dont know about that): Precalculate the multiplication and divisions to a single multiplication. From what i understand the...

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Re: fpga

There is an example called Memory.lvproj in LabVIEW.  It's a pretty simple example, but it shows the read and write in a VI for the FPGA.

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Re: VISA resource not listing options

Thanks. Don't remeber having to install Visa on my previous computer.

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Re: Independent Sample and log rates

Thanks for your response.  I did not include data logging yet (cause I dont know how) but looked at the logic. That will destroy my count down timer on the front panel right ?

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Re: Independent Sample and log rates

What is your countdown timer supposed to show?  It wasn't clear you were using the express VI for that purpose in your earlier screenshot. If you need a separate timer for the sake of a countdown vs. a...

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Re: Independent Sample and log rates

The timer is used to toggle a valve every five seconds and provide an countdown indicator for the sampling period (0.5 sec x 10 seconds). I will work on your suggestion using another express VI. Thanks

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Re: Change 8-bit binary image back to 8-bit grayscale

Below is the VI shown that I using an grayscale(U8) at the beginning as input after doing the process of tresholding the output Image was change from a grayscale image to a binary Image but then the...

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