[Biff]

The info is in the manual for the controller and in other places. Here goes anyway, the A/D converters on the robot control have 10 bit resolution, the code snippet above shows how to get rid of the lest significant bits. To get 0 to 254 numbers. The A/D converters on the operator interface (OI) are 8 bit, no need to bit shift them to get to 0 to 254. If you are comparing the numbers from say from a pot on the IO and one on something attached to the robot it's good to keep in mind that the a/d converters have this difference.