IC697CPX928 | GE Fanuc | CPU Module 6 MB Memory

Product Overview

The GE IC697CPX928 is a high-performance Central Processing Unit (CPU) module for the GE Fanuc Series 90-70 PLC platform. Powered by an Intel 80486DX4 microprocessor at 96 MHz, it delivers exceptional processing speed with a 0.4 µs Boolean scan rate. With 6MB battery-backed RAM and 256KB non-volatile Flash memory, it supports up to 12,000 discrete I/O points and 8,000 analog I/O channels, making it ideal for large-scale industrial automation and process control.

Key Specifications

• Part Number: IC697CPX928
• Product Type: Central Processing Unit (CPU)
• Series: GE Fanuc Series 90-70
• Microprocessor: Intel 80486DX4, 32-bit
• Clock Speed: 96 MHz
• Boolean Execution Speed: 0.4 µs per function
• User Memory (RAM): 6 MB battery-backed
• Flash Memory: 256 KB non-volatile (stores firmware + user program)
• I/O Capacity: 12,000 discrete I/O (any mix); 8,000 analog I/O
• Serial Ports: 1 × RS-232, 2 × RS-485, 1 × Factory Reset port
• Input Voltage: 5 VDC
• Current Draw: 3.1 Amps (nominal)
• Slot Requirement: 1 slot in Series 90-70 rack
• Battery: Lithium battery IC697ACC701 for memory retention
• Status LEDs: 7 status LEDs for system monitoring
• Dimensions: 1.5" × 8.5" × 11.5" (3.8 × 21.6 × 29.2 cm)
• Weight: 1.83 lbs (0.83 kg)
• Operating Temperature: 0°C to 60°C (with forced air cooling); 0°C to 50°C (without)

Features & Benefits

• High-Speed Processing: 96 MHz 80486DX4 delivers 0.4 µs Boolean execution for demanding real-time control
• Massive I/O Support: Handles up to 12K discrete + 8K analog points for large-scale systems
• Robust Memory: 6MB RAM with battery backup ensures program retention during power outages
• Flexible Communication: Triple serial ports support SNP, Modbus, and other protocols
• Ethernet Ready: Add optional Ethernet interface modules for TCP/IP integration
• 32-Bit Floating Point: Supports complex mathematical operations for advanced process control

Applications

• Large-scale manufacturing automation (automotive, packaging)
• Power generation boiler and turbine control
• Oil refinery distillation and cracking unit control
• Water treatment plant SCADA and process control
• Material handling and conveyor systems

Installation Guide

1. Power Down: Turn OFF all rack power supplies before CPU installation
2. Slot Selection: Insert the IC697CPX928 into Slot 1 of the Series 90-70 rack (CPU slot)
3. Seat Module: Align with the backplane connector and press firmly until fully seated
4. Battery Installation: Install the IC697ACC701 lithium battery in the battery compartment
5. Serial Connections: Connect programming cable (IC690ACC901 converter recommended) to the RS-232 port
6. Programming: Use Proficy Machine Edition or CIMPLICITY software to download and configure the application
7. Power Up: Apply rack power and verify the RUN LED illuminates after initialization
8. Cooling: Ensure adequate airflow; use rack fan (IC697ACC721/724) if operating near 60°C

FAQ

Q: What is the difference between IC697CPX928 and IC697CPX935?
A: The CPX935 features a faster processor (2.1 GHz dual-core), 256MB memory, and 0.02 ms/K scan time, while the CPX928 uses a 96 MHz 80486DX4 with 6MB RAM and 0.4 µs Boolean speed. The CPX928 is suitable for most large-scale legacy applications.

Q: Can I use this CPU in an RX7i system?
A: No, the IC697CPX928 is designed for Series 90-70 racks only. RX7i systems use IC697CPX9xx CPUs with RX7i-specific firmware.

Q: How long does the backup battery last?
A: The IC697ACC701 lithium battery typically provides 1–2 years of memory retention. Replace when the Battery Low LED activates.

Q: Is Ethernet built-in?
A: No, Ethernet is available via optional communication modules such as IC697CMM742 or IC697CMM741.

Selection Tips

• For new designs, consider migrating to RX3i (IC695CPK330) or RX7i platforms for modern Ethernet and redundancy features
• Ensure your programming software is compatible — Proficy Machine Edition 5.0 or later recommended
• If operating in high-vibration environments, use anti-vibration mounting kits
• Plan I/O expansion carefully; the 12K/8K limit includes all distributed I/O via Genius or FIP networks
• Stock spare IC697ACC701 batteries to prevent memory loss during maintenance