Simulink warning (frame-based vs. sample-based)

Hi,

I'm getting the following warning in simulink:

... Warning: Update your model to move control of sample- and frame-based processing from the frame status of the signal to the block dialog parameters. If your model does not contain any referenced models, perform all three of the following steps: ...

Do you guys know, is it safe to ignore this warning? I tried to do the steps indicated in the DSP System Toolbox Release Notes, however, it does not seem to remedy this warning. It keeps complaining about sample vs. frame-based sampling. Even some of the standard blocks (e.g., mean) seem to produce this warning. Advice would be greatly appreciated.

Thanks, -- Octav

Answer 1

[Kaustubha Govind]

I think it's best to fix your model to avoid the warning, because if you don't, your model may start to error in a future release. However, if this is for prototyping work that you don't plan on porting to later versions, I think it might be okay to ignore the warning.

Do you get the warning even after setting the "Input processing" on all the blocks to "Frame-based"? I believe even the Mean block now has this parameter (amongst other blocks that also support frame-based processing). Also consider running slupdate on your model so some of the work is done automatically for you.

[Octav Chipara]

Hi,

I'm confused. I thought that the warning was caused by some signal in my model being explicitly set to 'frame-based'. Instead, blocks should be set to frame mode as you suggest. Is there an easy way to check which signals in the model are set to be frame-based?

-- Octav

[Kaustubha Govind]

The easiest way is to turn on Format>Port/Signal Displays>Wide Nonscalar Lines on your model. The frame signals are represented with lines that look like "=" (ie. two lines). Scalar signals are represented by a single, thin line and regular non-scalar signals are represented by a single, thick line.

[mh z]

How to set the "Input processing" on all the blocks to "Frame-based"? For example, which parameter should I set to set the block "To workspace" to "Frame-based"?