If you're doing an implicit analysis you can do the following:
First, in the Visualization module select Results -> Active Steps/Frames and select which steps and frames in your analysis you wish to extract the data from. You may or may not wish to include all of the frames, this is up to you.
Next you can select Tools -> XY Data -> Create -> ODB Field Output to create the XY Data Object you desire. You should double check which Steps/Frames you wish to be active and then select your desired field output variable and finally select which region you want to extract the data from be it from the viewport or through previously generated sets. Be careful here, selecting a very large region will generate A LOT of curves so this should be done only on a smaller region of interest.
You can repeat this process for other field output variables and then combine them should you wish to produce a plot of two time/frame based variables against each other for say a stress/strain curve and the like.
This is all covered in excellent detail in Section 29.1.2: Understanding how to specify an X-Y data object and the subsequent sections in the documentation.
Good luck.
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