GE Fanuc IC693CPU350 Series 90-30 CPU 350 Processor Module

Product Overview

IC693CPU350 is a single slot CPU 350 processor module designed for GE Fanuc Series 90-30 programmable logic controller systems. The controller uses an Intel 80386EX processor running at 25 MHz and supports up to eight baseplates including expansion and remote racks. Engineers deploy this CPU in turbine auxiliaries, water treatment plants, packaging lines, and legacy DCS migration projects where stable deterministic control is required.

The module provides 32 KB user memory, supports up to 4096 I/O points, and delivers a typical scan rate of 0.22 ms per 1K of Boolean logic. Battery backed clock, flash firmware storage, and floating point math support ensure reliable long term operation. The CPU integrates memory references for analog, discrete, and register data, making it suitable for hybrid process and machine control. Flexible communication expansion modules allow Ethernet, Profibus, and serial network integration.

Hardware Architecture

The IC693CPU350 installs into the CPU slot of a Series 90-30 baseplate. The module operates with expansion racks and remote I/O through standard GE Fanuc backplane architecture. Communication capabilities depend on optional modules such as CMM, PCM, Ethernet, and fieldbus interfaces.

Key architecture features include:

• Single slot CPU design

• 80386EX processor at 25 MHz

• 32 KB user program memory

• Support for 8 total baseplates

• Battery backed real time clock

• Flash firmware storage

• Floating point math support

• Periodic interrupt handling

• Shift register and timer support

• Multidrop LAN capability

Technical Specifications

Technical FAQs

Does IC693CPU350 include a built in serial port?
No. The CPU does not include an onboard serial port. Communication requires CMM or PCM modules.

How many racks does the CPU support?
The controller supports one CPU baseplate plus seven expansion or remote baseplates.

Is floating point math supported?
Yes. Firmware version 9.0 and later supports floating point math operations.

Can this CPU replace IC693CPU340 or IC693CPU364?
Yes. Replacement is possible but memory size and communication requirements must be verified.

Engineering & Installation Guide

Install the CPU in slot 1 of the Series 90-30 baseplate. Ensure the power supply supports minimum 670 mA at 5 VDC.

Use battery replacement during powered operation to maintain clock and register memory retention.

For networked systems, install communication modules in adjacent slots to minimize backplane latency.