There have been some really good video tutorials posted on YouTube. Anyone interested learning some in-depth stuff about PLC5's and SLC500's should take a look:
http://www.youtube.com/RonBeaufort
Here are a couple videos that show how to build an HMI using all free software. It communicates to AB SLC500 or Micrologix over a serial connection (DF1).
http://www.youtube.com/watch?v=CiPzqc5jDlE
http://www.youtube.com/watch?v=1-5STcYWQ7k
I've posted this on another forum, so some of you...