Description

Brief Product Description

The GE Fanuc IC697CPM790 is a high-performance 64 MHz 80486DX2 processor module designed for mission-critical Series 90-70 PLC systems.² Supporting Triple Modular Redundancy (TMR), this CPU provides 1MB of battery-backed memory and a rapid 0.4µs execution speed for high-availability industrial applications.³

High-Speed Processing and Fail-Safe Redundancy

The GE Fanuc IC697CPM790 stands as a premier processing solution for the Series 90-70 platform, specifically engineered for environments where downtime is not an option. At the core of the module, a 64 MHz 80486DX2 microprocessor executes boolean logic at a lightning-fast rate of 0.4 microseconds per function.⁴ To achieve maximum system availability, this CPU supports Genie Redundancy (GMR) and Triple Modular Redundancy (TMR) architectures.⁵ In a TMR setup, three independent IC697CPM790 processors work in parallel across three separate racks, ensuring that a single hardware failure never interrupts the control process. This makes the unit an ideal choice for emergency shutdown systems (ESD) and fire and gas detection applications.

Scalable I/O Capacity and Memory Management

This central processing unit manages complex automation tasks through its expansive memory and I/O handling capabilities. The IC697CPM790 provides 1 MB of total battery-backed RAM, dedicating up to 512 KB for user-defined programs and data storage.⁶ Because the module supports high-density configurations, it can control up to 12,000 discrete I/O points in a simplex environment.⁷ Furthermore, the processor accommodates up to 8,000 analog I/O points, allowing for fine-tuned control over intricate industrial processes. Users typically configure these parameters using standard ladder diagram logic or specialized Standalone C programs for advanced redundancy and autotest routines.

Industrial Connectivity and System Security

The hardware interface of the IC697CPM790 emphasizes secure and versatile communication. A 15-pin D-type connector provides a native RS-485 serial port, while external converters enable seamless connection to RS-232 programming stations.⁸ To protect sensitive control logic from unauthorized modifications, the module includes password-protected access levels. Maintenance personnel can verify the unit’s operational health via front-panel status LEDs, which monitor power, run status, and internal faults.⁹ Additionally, an integrated calendar clock provides accurate time-stamping for system events and diagnostic logging.¹⁰

Key Technical Characteristics

• 64 MHz 80486DX2 Microprocessor: Delivers high-speed logic execution for time-critical automation.¹¹
• TMR & GMR Support: Enables Triple Modular Redundancy to ensure continuous operation in critical safety systems.¹²
• 1 MB Battery-Backed RAM: Protects user programs and system data during power interruptions.¹³
• Expansive I/O Logic: Coordinates up to 12,000 discrete points and 8,000 analog points for large-scale deployments.
• Advanced Security Features: Utilizes multi-level password protection to safeguard industrial assets.
• Rapid Scan Rates: Processes boolean functions in 0.4 microseconds to maintain tight control loops.

Technical Specifications