Chapter 1. Introduction8 PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual GFK-2222AD1.3 RX3i OverviewThe RX3i control system hardware consists of an RX3i universal backplane and up to seven Series 90-30expansion or remote racks. The CPU can be in any slot in the universal backplane except the last slot,which is reserved for the serial bus transmitter, IC695LRE001.The RX3i supports user defined Function Blocks (LD logic only) and Structured Text programming.The RX3i universal backplane uses a dual bus that provides both:▪ High-speed PCI for fast throughput of new advanced I/O.▪ Serial backplane for easy migration of existing Series 90-30 I/OThe RX3i universal backplane and Series 90-30 expansion/remote racks support the Series 90-30 GeniusBus Controller and Motion Control modules, and most Series 90-30/RX3i discrete and analog I/O withcatalog prefixes IC693 and IC694. RX3i modules with catalog prefixes IC695, including the Ethernet andother communications modules can only be installed in the universal backplane. See the PACSystemsRX3i System Manual, GFK-2314 for a list of supported modules.RX3i supports hot standby (HSB) CPU redundancy, which allows a critical application or process tocontinue operating if a failure occurs in any single component. A CPU redundancy system consists of anactive unit that actively controls the process and a backup unit that is synchronized with the active unitand can take over the process if it becomes necessary. Each unit must have a redundancy CPU,(IC695CRU320). The redundancy communication path is provided by IC695RMX128 Redundancy MemoryXchange (RMX) modules set up as redundancy links. For details on the operation of PACSystemsredundancy systems, refer to the PACSystems Hot Standby CPU Redundancy User Manual, GFK-2308.RX3i communications features include:▪ Open communications support includes Ethernet, PROFIBUS, PROFINET, Modbus TCP, EthernetGlobal Data (EGD), DNP3 and serial protocols.▪ On the CPE400 one of its embedded Ethernet ports is set up as a dedicated Field Agent port.▪ The CPE302, CPE3059, CPE310, and CPE330 and CPE400 CPUs provide an embedded Ethernetinterface which is used to connect to the programmer (Proficy Machine Edition).▪ Effective with RX3i CPE310/CPE305 firmware version 7.30, or CPE330 firmware version 8.50, theembedded Ethernet port on the CPU provides support for Service Request Transfer Protocol (SRTP)channels and for Modbus TCP. This feature is available on all firmware versions of CPE400.▪ Effective with CPE310/CPE305 firmware version 8.20, or CPE330 firmware version 8.45, the CPEembedded Ethernet port supports OPC UA Server. This feature is available on all firmware versionsof CPE400. Refer to PACSystems RX7i & RX3i TCP/IP Ethernet Communications User Manual, GFK-2224 version M or higher (Chapter 10).▪ Effective with RX3i firmware version 8.302, the CPE310/CPE305 CPUs also support Ethernet GlobalData (EGD). Prior to that firmware version, EGD was only available in the RX3i via the RX3i EthernetInterface Module (IC695ETM001). With this upgrade, these CPUs are positioned as a directreplacement for S90-30 IC693CPU374.▪ Effective with RX3i firmware version 8.603, the CPE330 supports Ethernet Global Data (EGD) Class 1.This feature is available on all firmware versions of CPE4004 and CPE3029.2 Proficy Machine Edition Release 8.50 SIM 7 is required for EGD Class 1 on Embedded Ethernet interface of CPE305/CPE310.3 Proficy Machine Edition Release 8.60 SIM 5 is required for EGD Class 1 on both LAN1 and LAN2 of CPE330. This PME versionalso supports Advanced Configuration Parameters for EGD on CPE330. Alternately, PME Release 8.60 (not SIM 5) supportsEGD on CPE330 LAN1 only, and does not support Advanced Configuration Parameters for EGD.4 Proficy Machine Edition Release 9.00 SIM 8 or later is required for native configuration support of the CPE400.
