"I don't get it..."

Question

I thought I was doing something fairly simple. I want to capture a bunch of waveforms to a file on an RTOS unit. Start the capture based on an external input turning ON and stop when the same input turns OFF. The whole capture may last for up to 3 minutes at 1000 samples per second. Then FTP this file to a central server and delete the file from the RTOS disk. I got this working fine now.
Now the problem. I built a "Read.vi" and I want to be able to grab this file from the server and display THE WHOLE THING on a chart, so I can zoom in on anything which doesn't look normal. I never dreamed this would be harder than Quantum Physics. I have tried .lvm files, and now I am trying binary files. I still see the same reaction. It will only read 1000 samples, or the first second of the file. A probe shows me that the Read Binary File.vi is indeed only reading in from 0 to 999 samples and then nothing else. At least it is reading all 16 waveforms.
My question is.... Is there any way that I can read more than the first second? OR Do I have to create a file for each successive second of my capture?
I have read thousands of posts and not been able to find anything about this. The only thing I can figure is that everyone must look at data in real time? I don't get it...
technomage

Answer 1

Here is a copy of my Read-bin.vi and a sample file which should cover about 10-15 seconds of a 16 waveform capture. I have also attached the Write-bin.vi I have built, but it is set up to run on the RTOS.
I also have another vi I am using as the external trigger. Normally my laptop is running the Trigger.vi and also serving as the central server during this development phase. Then I run the Write-bin.vi on the RTOS unit over ethernet. My trigger signal is a shared network variable. When ON the capture is running and stores the data on the RTOS hard drive. When OFF the capture stops, the file is transferred via FTP to my "central server" and then deleted from the RTOS disk. In order to ensure the transfer took place I have modified the FTP-PUT.vi so it would output the response code from the server when the connection closes. That is the trigger to delete the file on the RTOS unit. I have also included that vi.
I hope someone can point me in the right direction...
Thanks a Ton
technomage
Attachments:
Read-file.zip ‏405 KB