LabVIEW
Error 7 - TDMS open error
Solved!
Hi Igni,
general recommendation: When you have problems with your specific VI you should attach this VI!
Now when I run the RT vi, I am getting an error "error code 7 - tdms open in RT.vi".
What file path are you trying to use? You know the file has to be stored on your cRIO target!?
One more additional input is that, I am not able to configure read/write control to "count(uSec)" as per the example, it can be only configured to "overflow".
What exactly are you talking about? Again: attach your VI!
Hi Igni,
so my glass ball gave the correct answer: "Use a filepath available on your cRIO target!"
Your cRIO has NO ACCESS to the harddrive in your host PC! It's a computer on its own! (You wouldn't want your collegues to access your harddrive just because they access the same network!)
You need to store the data in the internal flash drive of the cRIO, usually found with the path "C:"…
One more additional input is that, I am not able to configure read/write control to "count(uSec)" as per the example, it can be only configured to "overflow".
You can only access existing FP elements of the FPGA VI! When there is no "count[µsec]" control in the FPGA VI your ReadWrite will not provide access to it…
Hi Igni,
What about the read/write control in front of tdms open vi. In the example it was configured to count(uSec) but I am not able to do it. It has only "overflow" control.
Again: when there is no "count(uSec)" control on your FPGA VI then you cannot select it in the ReadWrite node!
After changing it to RT drive, the code is running fine but only for 2 sec and it throws overflow signal and stops.
You need to read your FPGA FIFO in the RT host faster than the FPGA writes to it - otherwise you will run into an overflow!
- Remove the wait function in the loop.
- Use a producer/consumer scheme to separate DAQ loop and FileSaving into their own loops!
- Check the sampe rates in the FPGA VI. How fast are you writing into the FIFO?
