FANUC IC695CRU320-EN is a redundant CPU module designed for the PACSystems RX3i control system, widely used in industrial automation and critical control applications such as power generation, petrochemical plants, and manufacturing processes that require high system reliability.

---

1. Product Overview

• Model: IC695CRU320-EN
• Series: PACSystems RX3i
• Type: Redundancy CPU Module
• Manufacturer: FANUC / GE Intelligent Platforms
• Main Function: Provides hot-standby CPU redundancy, allowing a backup CPU to immediately take over control if the primary CPU fails.

This module is typically used together with IC695RMX128 or IC695RMX228 redundancy memory exchange modules to enable synchronized operation between two CPUs.

---

2. Key Technical Specifications

• Processor: 1 GHz Celeron CPU
• User Memory:
  • 64 MB battery-backed RAM
  • 64 MB non-volatile Flash memory
• Program Blocks: Up to 512 blocks, maximum 128 KB each
• Discrete I/O Capacity: Up to 32K bits
• Analog I/O Capacity: Up to 32K words
• Communication Ports:
  • RS-232
  • RS-485
• Supported Protocols: Modbus RTU, SNP, Serial I/O
• Switchover Time: Less than one logic scan cycle (approximately 3 ms)
• Operating Temperature: 0 – 60 °C
• Power Requirements:
  • 3.3 VDC / 1.0 A
  • 5 VDC / 1.2 A

---

3. Key Features

• Hot-Standby Redundancy: Two CPUs operate in synchronization to improve system reliability.
• High-Speed Backplane Architecture: Supports RX3i PCI and high-speed serial backplane communication.
• ECC Memory Protection: Single-bit error correction and multi-bit error detection.
• Multiple Programming Languages: Supports Ladder Logic, Function Block Diagram, Structured Text, and C language.
• High-Speed Data Synchronization: Allows large-capacity data exchange between redundant CPUs.

---

4. Typical Applications

• Power plant control systems
• Oil and gas production facilities
• Chemical process automation
• Large-scale manufacturing lines
• High-reliability PLC control systems

---

✅ Summary:
The IC695CRU320-EN is a high-performance redundant CPU module for the RX3i platform. By implementing a dual-CPU hot-standby architecture, it ensures continuous system operation even in the event of a CPU failure, making it ideal for mission-critical industrial control applications.