GE Fanuc Series 90-70 IC697CGR772 96MHz 32-Bit Floating Point Redundant CPU

High-Availability Control Logic

The IC697CGR772 is a specialized Central Processing Unit engineered for the GE Fanuc Series 90-70 PLC platform, specifically optimized for mission-critical redundancy applications. This 32-bit floating-point processor is designed to operate in Hot Standby Dual Bus configurations, providing seamless failover and synchronized data mirroring between primary and secondary controller racks. By utilizing the IC697CGR772 (Part Number: IC697CGR772), industrial facilities can eliminate single points of failure in their control architecture, ensuring continuous process uptime in sectors such as power generation and chemical processing.

Technical Specifications

The following technical parameters define the processing capabilities and hardware requirements for the IC697CGR772:

• Processor Clock Speed: 96 MHz

• Architecture: 32-bit Floating Point (optimized for complex math and PID)

• User Memory: 512 Kbytes (Battery-backed CMOS RAM)

• System Support: Dual Bus Redundancy / Hot Standby

• Discrete I/O Capacity: Up to 12K inputs and 12K outputs

• Analog I/O Capacity: Up to 8K inputs and 8K outputs

• Backplane Compatibility: VME standard C.1 based Series 90-70 racks

• Programming Support: Logicmaster 90, Control, or Proficy Machine Edition

• Current Consumption: Approximately 1.6 Amps from the 5V DC bus

Advanced Redundancy Features

The IC697CGR772 excels in environments where "bumpless" transfer of control is required. It manages the synchronization of internal registers and I/O states over a dedicated redundancy link, allowing the backup CPU to assume full control of the process in less than one logic scan should the primary unit fail. This module supports multiple redundancy protocols and is compatible with IC697RCM711 redundancy communication modules to facilitate high-speed heartbeat monitoring and data transfer.

Configuration and Maintenance

Configuration of the IC697CGR772 is entirely software-driven, removing the need for physical jumpers or DIP switches for basic setup. The faceplate features three serial ports (two for the programmer and one for integrated communication) and a toggle switch for memory protection and run/stop control. Onboard diagnostics continuously monitor the internal CPU health, parity, and memory integrity, reporting any discrepancies immediately to the system fault table to facilitate proactive maintenance and rapid troubleshooting.