A white paper on trends in control system I/O is available from Rockwell Automation/Allen-Bradley (Milwaukee, WI). Provides a basic understanding of what I/O is and a brief summary of the evolution of control system I/O.
Basic choices available are defined too. Explores key trends affecting the industry and provides guidance on how to choose the best I/O option for a given application. Many application examples are included. Covers integrated control block and terminal I/O and PC-based I/O. Also covers centralized versus distributed I/O network protocols and mounting space considerations.