GE Fanuc IC697CPU771 512KB Expandable Memory CPU

Product Overview

The IC697CPU771 is a high-performance central processing unit optimized for the GE Fanuc Series 90-70 PLC range. Utilizing a 12 MHz 80C186 microprocessor, this single-slot module is designed to execute complex logic with a boolean function time of just 0.4 microseconds. It provides a flexible memory architecture, supporting up to 512 Kbytes of battery-backed expansion memory that can be configured for both program and data storage. Whether integrated into IC660/IC661 systems or standard IC697 racks, this CPU ensures efficient data handling and robust control for mid-to-large scale industrial automation projects.

Technical Configuration

Operational Engineering

This module emphasizes longevity and precision, featuring a battery-backed calendar clock with an accuracy of ±3.5 seconds per day. The IC697CPU771 is engineered for seamless integration, allowing for programming via MS-DOS or Windows-based software through an SNP port or Ethernet TCP/IP. To ensure data integrity, the system supports 6 months of nominal memory retention without power, backed by a battery with a 10-year shelf life at standard operating temperatures.

Technical Specifications

Installation & Maintenance Guide

The unit installs easily into a single slot of the PLC backplane. When configuring the 5V bus, ensure the power supply accounts for the 1.1 Amp current draw, which includes the installed expansion memory. At a weight of 0.80 kg, the module is easily handled during replacement or system expansion. Maintenance routines should include periodic checks of the status LEDs and verifying battery health to ensure the nominal 6-month data retention period remains active in the event of a power failure. Configuration is entirely software-driven, removing the need for manual jumper adjustments.

Engineering Advantages

• Rapid Logic Execution: The 0.4μs boolean time allows for high-speed response in safety and process-critical loops.
• Customizable Memory: Users can partition the 512 KB memory between program logic and register data to suit specific application needs.
• Flexible Communication: Native support for SNP port communication and Ethernet connectivity simplifies modern networking requirements.
• High Analog Capacity: Capable of managing up to 8K analog I/O points, making it suitable for sophisticated process control.

Technical FAQs

Q1: What is the benefit of the 80C186 microprocessor?
A1: The 80C186 provides a balanced combination of low power consumption and reliable 12 MHz processing, ideal for stable industrial control environments.

Q2: How long will the CPU retain data during a total power outage?
A2: If the battery is healthy, the IC697CPU771 can retain program and data memory for a nominal period of 6 months without external power.

Q3: Is this CPU compatible with Windows 10 programming environments?
A3: While originally designed for MS-DOS and early Windows NT/95 software, modern interface tools can often bridge these legacy modules to newer Windows-based management systems.