GE IC695CPE305 PACSystems RX3i CPU Module

Description

1. Core Overview & Positioning

2. Key Features & Functions

• High-Speed Processing:​ Powered by a high-performance microprocessor (likely an Intel or similar industrial-grade chip) with a fast clock speed, capable of executing complex control logic, data handling, and communication tasks with deterministic scan times.
• Large Memory Capacity:​ Features substantial user memory​ (both for the ladder logic/structured text program and for data variables) and non-volatile memory​ for storing the project without battery backup. The exact size is a key differentiator of the 305 model.
• Integrated Communication Ports:​ Includes multiple built-in communication interfaces for system configuration and networking:
  • Serial Port (RS-232/485):​ For connecting to peripherals (HMI, bar code readers) or legacy networks.
  • Ethernet Port(s):​ One or two 10/100 Mbps Ethernet ports for programming (via SRTP — Serial Real-Time Protocol), peer-to-peer communication, and integration with SCADA/MES systems using standard protocols like Modbus TCP/IP​ and EtherNet/IP.
• Backplane Connectivity:​ Connects to the high-speed PCI-based RX3i backplane​ for ultra-fast data exchange with I/O and intelligent modules (like motion controllers, network interface modules).
• Extensive I/O and Module Support:​ Can control a large number of local and distributed I/O points. Compatible with the extensive Series 90-30, Series 90-70, and RX3i I/O families​ via appropriate interface modules, protecting legacy investments.
• Motion Control Capability:​ Can serve as the coordinator for complex multi-axis motion control when used with dedicated motion modules (like the IC694 series).
• Robust Operating System:​ Runs a real-time, deterministic operating system optimized for control applications.

3. Model Number Breakdown & Specifications

• Processor:​ High-performance 32/64-bit industrial processor.
• User Memory:​ Likely in the range of 5-10 MB​ for logic and data (a defining feature compared to lower models like CPE302/304).
• Non-Volatile Memory:​ For project storage (Flash).
• Communication Ports:
  • Serial:​ 1 x RS-232/485 configurable port.
  • Ethernet:​ 1 or 2 x 10/100Base-TX ports with auto-MDIX.
• Supported I/O:​ 1000s of discrete and analog points.
• Specialty I/O Support:​ High-speed counters, motion, etc.
• Power Supply:​ Powered by the RX3i rack’s power supply (e.g., IC695PSD040) via the backplane.
• Real-Time Clock:​ Battery-backed (often with a supercapacitor for short-term retention).
• LED Indicators:​ Status, fault, communication activity.

4. System Integration & Architecture

• Physical Setup:​ The CPU module is installed in the leftmost slot (Slot 0) of an RX3i Universal Backplane​ (e.g., IC695CHSzz). The rack is populated with power supply, I/O modules, and communication modules.
• Programming & Configuration:​ The entire system is programmed and configured using Emerson’s PAC Machine Edition (PME)​ software, formerly known as Proficy Machine Edition. This is an integrated development environment supporting:
  • Ladder Logic (LD)
  • Structured Text (ST)
  • Function Block Diagram (FBD)
  • C programming (for custom blocks)
• Network Architecture:​ The CPU can be the center of a multi-tier network:
  • Device Level:​ Connects to remote I/O via Genius Bus, PROFIBUS DP​ (with appropriate module), or EtherNet/IP.
  • Control Level:​ Peer-to-peer communication with other PACSystems or third-party PLCs.
  • Information Level:​ Connects to plant SCADA, MES, and ERP systems via Ethernet.

5. Typical Applications

• Complex Machine Control:​ Automotive assembly lines, packaging machinery, printing presses.
• Process Automation:​ Batch control in chemical, food & beverage, pharmaceutical industries.
• Material Handling:​ Conveyor systems, automated storage and retrieval systems (AS/RS), sortation systems.
• Infrastructure Control:​ Water/wastewater treatment, HVAC control for large facilities.
• Energy Management:​ Monitoring and control of power generation and distribution equipment.