Does anyone know which Simulink Block this is?

I came across this block in a model but I cannot understand what this block does or what it is called. Could someone help me please.

Thank you in advance!

Answer 1

[Fangjun Jiang]

It looks like the "Fcn" block specified as "u(1)". It is used to pick out the first element.

https://www.mathworks.com/help/releases/R2019b/simulink/slref/fcn.html

It was removed in R2020a.

If you can't find it in your release, you can use the Selector block or the DeMux block.

Answer 2

[Jon]

Right click on the block in question. This will bring up a context menu. Select "help" from the bottom of this menu. This will tell you all about the block.