GFK-2222AD April 2018 1Chapter 1 IntroductionThis manual contains general information about PACSystems CPU operation and product features.Chapter 1 provides a general introduction to the PACSystems family of products, including newfeatures, product overviews, and a list of related documentation.CPU Features & Specifications are provided in Chapter 2.Installation procedures for the different platforms are described in their respective manuals as givenbelow:1. PACSystems RX7i Installation Manual, GFK-2223.2. PACSystems RX3i System Manual, GFK-2314.3. RSTi-EP User Manual, GFK-2958.CPU Programming is covered in PACSystems RX7i, RX3i and RSTi-EP CPU Programmer’s ReferenceManual, GFK-2950. It provides an overview of program structure and describes the various languageswhich may be used, their syntax and operation, and provides examples.CPU Configuration is described in Chapter 3. Configuration using the proprietary Proficy Machine Edition(PME) programming and configuration software package determines characteristics of CPU, System andmodule operation. It also establishes the program references used by each module in the system. Fordetails on configuration of the embedded RX7i Ethernet interface as well as the rack-based RX7i andRX3i Ethernet Interface modules, refer to PACSystems RX7i, RX3i and RSTi-EP TCP/IP EthernetCommunications User Manual, GFK-2224.CPU Operation is described in Chapter 4.Ethernet Communications and Serial Communications are described in Chapter 5.Serial I/O, SNP & RTU Protocols are described in Chapter 6.Performance Data, including Instruction Timing, is provided in Appendix A.User Memory Allocation is described in Appendix B.