The most common case, let's say you have a vector a=0:0.1:1.
Make it a column vector b=a'
Create a time vector to specify the time for each value, for example, t=(0:10)'
Use the "From Workspace" block, specify the data as [t b], which will give you data value 0 at time 0, value 0.1 at time t=1 second, etc.
There are other format too. Take a look at the Help document of the "From Workspace" block.
