IC697CPU789 | GE Fanuc Series 90-70 CPU Module

IC697CPU789 Module Overview

The IC697CPU789 is a single-slot 32-bit CPU engineered for Triple Modular Redundancy (TMR) systems, delivering fault-tolerant control with seamless majority-voting logic.

Model & Suffix Explanation

“IC697CPU” denotes the Series 90-70 CPU family; the suffix 789 signifies hardware optimized for three-unit synchronization, voted I/O and high-integrity operations.

Detailed Specifications

Processor: 80386DX @ 16 MHz

Total RAM: 512 KB battery-backed (200 KB available for user programs; 312 KB system overhead)

Program Steps: up to 65 536 steps

Discrete I/Os (simplex): 12 000 points; Voted Discrete I/Os: 2 048 inputs & 2 048 outputs

Analog I/Os (simplex): 8 000 channels; Voted Analog Inputs: 1 024

Backplane Bandwidth: up to 40 MB/s (VME-compatible rack)

Serial Port: 1 × RS-422/RS-485 @ up to 115 200 bps

Watchdog Timer: 200 ms interval

Nominal Scan Time: 10 ms

MTBF: 110 000 hours

Power Consumption: ~9 W (1.6 A @ 5 V DC)

Dimensions: 180 × 100 × 25 mm (rack slot footprint)

Weight: 0.42 kg

Operating Temperature: 0 °C to 60 °C

Operating Humidity: 5 %–95 % non-condensing

Battery Shelf Life: 1 year (data retention 6 months)