RT FIFO Errors - loss of connection to cFP controller

[DavidT]

Hello everyone,

Im having some problems using the RTFIFO functions on a cFP-2010 controller. I create an RTFIFO for an array of doubles (as per the attached jpeg). If i set the 'elements in array' to 6 my application crashes and I loss comms to the FP unit. If i set it to 1, there are no comms problems but obviously, I dont get all my data.

The data which I wish to write to the fifo is a single array of six elements.

Any ideas on how to overcome this problem?

Thanks

David

Using LV7.1 and RT 7.1

[Prashanth]

Hi David,

How long does you application run before crashing when you set number of elements in the array to 6. How does your application behave if you change the number of elements to say 2, 3, 8, 10, etc. I would also suggest that you try to create a new vi which is very simple and only creates this FIFO to see how it behaves.

Have a great day!

Regards,
Prashanth

[DavidT]

The application behaves the same regardless of number of elements. The app will create the fifo, but as soon as i start writting to it the app crashes. I will try as suggested and write a simple program, it just has me confused since im using other fifos (some with array of U16 with 100 elements) which do not cause any problems.