What is the difference in the acr 500 and the acr 500 pro programs besides the price
The "Pro" version adds logging and recording capabilities, as well as programming. The "Basic" version is programming only. The correct name is ARC500 (acr500 is a typo).
If you have not purchased software yet, take a look at
Win500. Besides programming, it also has logging and recording features, and is lower cost than just the Basic ARC500.