IC697CPU789 - 16 MHz, 32-Bit Expandable Central Processing Unit for IC66* Triple Modular Redundancy Systems

The IC697CPU789 is a 16 MHz, 32-bit expandable CPU designed for use in Triple Modular Redundancy (TMR) systems, offering high reliability and redundancy for critical control applications such as Emergency Shutdown (ESD), fire and gas detection systems, and more. This CPU supports battery-backed memory and extensive I/O capabilities, making it ideal for industrial applications that require high precision and reliability.

Key Features of the IC697CPU789

    Single Slot CPU: Occupies only one slot in a rack system and supports 512 Kbytes of battery-backed expandable memory, with up to 200 Kbytes available for user applications and data.
    High I/O Capacity: Supports up to 12K digital I/O in simplex mode, and 2048 voted digital inputs/outputs. It also supports 8K analog I/O in simplex mode and 1024 voted analog inputs.
    High-Speed Processing: Executes boolean functions in 0.4 microseconds using a 16 MHz 80386DX processor.
    TMR Support: Designed specifically for Triple Modular Redundancy (TMR) systems, providing high reliability and redundancy.
    Programmed via MS-DOS or Windows: Can be programmed using MS-DOS or Windows-based software over Ethernet TCP/IP or through the SNP port.
    Battery-backed Calendar Clock: Ensures the retention of program and data memory during power loss.
    Status LEDs: Four green LEDs indicate the status of the CPU, including operational status, program state, and memory protection.

Triple Modular Redundancy (TMR)

The IC697CPU789 is engineered for TMR systems, providing redundancy and reliability in critical applications like emergency shutdowns and fire and gas systems. TMR systems ensure continuous operation by using redundant processors and I/O modules, which work together to automatically handle any component failures.

The CPU is programmed and configured using C program blocks designed specifically for TMR operation and automatic testing routines. These program blocks must be included in the loaded application for the CPU to function correctly.

Memory and Protection

    Expandable Memory: The CPU supports 512 Kbytes of CMOS RAM, of which 200 Kbytes is available for user application programs and data.
    Memory Protection: A memory protect key switch prevents unauthorized access, allowing changes to program and configuration data only by an authorized programmer.

Installation and Configuration

The installation of the IC697CPU789 must follow the guidelines in the accompanying product manuals to ensure safe and reliable operation. The CPU and I/O system are configured using MS-DOS or Windows-based software. There are no DIP switches or jumpers to configure; the CPU automatically verifies module and rack configurations at power-up.

Installation Steps:

    Connect the battery to one of the battery connectors.
    Set the toggle switch to STOP and the memory protect key to OFF.
    Ensure the rack power is turned off.
    Install the CPU in slot 1 of rack 0.
    Power on the system and verify the status through the diagnostic LEDs.

Communication Ports

    RS-485 Serial Port: The CPU features an RS-485 compatible port for connection to a programmer or other serial devices.
    Parallel Programmer Interface: The Bus Transmitter Module (IC697BEM713) is used for parallel programming.
    Ethernet TCP/IP: Remote programming and communication can be achieved via Ethernet TCP/IP using an Ethernet Interface Module (IC697CMM741 or IC697CMM742).

The IC697CPU789 is a high-performance CPU designed for critical control applications where reliability and redundancy are paramount. It is particularly suited for TMR systems, offering continuous operation, error handling, and high safety in industries that require robust control systems.

>> GE Fanuc IC697CPU789 User manual (pdf)

++ Other 90-30 PLC modules

----------

+ Ge-Fanuc 2 Homepage

+ Ge-Fanuc Contact (for Automation Mall)

+ About Ge-Fanuc