GE IC697CPX935 CPU Module 96MHz Series 90-70

IC697CPX935 GE Fanuc PLC Processor 12K I/O

Product Introduction

The IC697CPX935 is a powerful central processing unit from GE Fanuc for the Series 90-70 platform. This single-slot CPU module runs on a 96 MHz 80486DX4 microprocessor, achieving a boolean execution speed of just 0.4 microseconds per function. Consequently, it handles high-speed logic control with ease. The module supports a massive I/O capacity—up to 12K points of discrete inputs and outputs in any combination, plus 8K words of analog I/O. Additionally, it offers three serial communication ports (one RS-232 and two RS-485) for flexible connectivity. With 1 MB of battery-backed RAM and 256 KB of non-volatile flash memory, the IC697CPX935 ensures reliable program storage and system firmware updates without hardware replacement.

Technical Specifications

The IC697CPX935 delivers robust processing power and extensive I/O capability. Below are the key technical parameters:

• Processor: 80486DX4 at 96 MHz

• Boolean Execution Speed: 0.4 µs per function

• Discrete I/O Capacity: 12 K points (any mix of inputs and outputs)

• Analog I/O Capacity: 8 K words (max)

• RAM: 1 MB battery-backed (uses IC697ACC701 battery)

• Flash Memory: 256 KB (for system firmware)

• Serial Ports: 1x RS-232, 2x RS-485 (9-pin D-shell)

• Supported Protocols: SNP Slave, Break-Free SNP Slave (Port 1 & 2)

• Current Required: 3.1 A at 5 V DC

• Operating Temperature: 0 to 60 °C (derating required above 50 °C)

• Slot Occupancy: 1 single slot

• Backplane Compatibility: VME C.1 format

Furthermore, the module supports floating-point calculations with exceptional speed, making it suitable for math-intensive applications. The flash memory allows convenient firmware updates via software, eliminating the need for EPROM replacement.

Compatibility and System Integration

The IC697CPX935 works seamlessly with a wide range of modules within the GE IC697 family. Specifically, it supports:

• Analog and discrete I/O modules

• Alphanumeric and programmable display processors

• Communication modules and LAN/link interface modules

• GE IC660 and IC661 bus controllers

• Intelligent option modules via the VME C.1 backplane

This broad compatibility enables system designers to build flexible, scalable control solutions. Moreover, the CPU can communicate with a programming computer using MS-DOS or Windows-based software (compatible with Windows 95 and Windows NT) through the SNP port or Ethernet TCP/IP. A 3-position run/stop switch provides local control over operating modes, simplifying commissioning and maintenance.

Cooling and Environmental Requirements

Given its processing power, the IC697CPX935 generates significant heat. Therefore, GE Fanuc recommends forced-air cooling when the ambient temperature exceeds 50 °C. Several fan assembly options are available:

• IC697ACC721 – 120 VAC rack fan assembly

• IC697ACC724 – 240 VAC rack fan assembly

• IC697ACC744 – 24 VDC rack fan assembly

Proper ventilation ensures reliable long-term operation and prevents thermal shutdown. Always verify that the installation environment stays within the specified 0–60 °C range, with adequate airflow around the module.

Installation Guidelines

Follow these steps to install the IC697CPX935 correctly:

1. Power Off – Disconnect power from the PLC rack before installation.

2. Slot Selection – Choose any available slot in the Series 90-70 chassis.

3. Insertion – Slide the module gently into the rack until it locks into place.

4. Wiring – Connect serial communication cables to the RS-232 and RS-485 ports as needed.

5. Battery Check – Verify the IC697ACC701 battery is installed and functional.

6. Configuration – Use the programming software to set up I/O references and communication parameters.

7. Power On – Restore power and monitor LED indicators for normal startup.

Additionally, ensure that the cooling fan assembly (if required) is installed and operating before running heavy workloads.

Packaging List

Each IC697CPX935 unit includes:

• One GE Fanuc IC697CPX935 CPU module

• One battery (IC697ACC701) pre-installed

• One terminal cover (attached)

• Quick reference card (printed)

Note: No programming cables, software media, or mounting hardware are supplied with the module.

Shipping and Logistics

All orders for the IC697CPX935 are shipped via trusted global carriers, including FedEx, UPS, and DHL. Each unit is carefully packaged to prevent damage during transit. Tracking information is provided once the order is dispatched. Express delivery options are available for urgent requirements.

Frequently Asked Questions (FAQ)

1. Can the IC697CPX935 replace an older GE Fanuc CPU in my existing rack?
Yes, the IC697CPX935 is fully compatible with Series 90-70 racks and backplanes. It directly replaces earlier CPU models with the same physical dimensions and keying.

2. What programming software works with this CPU?
The IC697CPX935 can be programmed using MS-DOS or Windows-based software running on Windows 95 or Windows NT. For modern PCs, you may need a legacy environment or virtual machine.

3. How do I update the firmware on this module?
Firmware updates are performed via the programming software through the serial or Ethernet port. The 256 KB flash memory stores the system firmware, so no EPROM replacement is required.

4. Is the IC697CPX935 compatible with third-party I/O modules?
While designed primarily for GE IC697 family modules, the CPU also supports certain GE IC660 and IC661 bus controllers. For third-party modules, verify VME C.1 backplane compatibility first.

5. What happens if the battery fails?
If the battery (IC697ACC701) is depleted, the 1 MB RAM will lose its contents when power is removed. Therefore, replace the battery periodically—typically every 2–3 years—to prevent program loss.