National Instruments' White Paper on PACs vs PLCs
This white paper describes the benefits and basic differences between programmable automation controllers (PAC) and the more traditional programmable logic controllers (PLC). This document describes the factors and criteria you should take into consideration when deciding which platform is better suited depending on your control and measurement needs. Comparisons between graphics, measurements, processing capabilities, communications and platforms. The direct link is found at http://tinyurl.com/ybhzvef.