General Electric IC693CPU351 Series 90-30 CPU Module

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Manufacturer: General Electric
Product No.: IC693CPU351
Country of origin:United States
Product Type: CPU Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 480g
Dimensions: 245 mm x 140 mm x 45 mm
Shipping port: Xiamen
Warranty: 12 months

The GE Fanuc IC693CPU351 is a single-slot central processing unit module designed for the Series 90-30 Programmable Logic Controller platform. It features an embedded 80386EX processor operating at a speed of 25 MegaHertz to deliver efficient computational execution across localized automation loops. Running on firmware release 9.00 or higher, this unit implements firmware-based software floating-point emulation, ensuring full logical execution of floating-point math blocks without requiring a separate hardware coprocessor. The module provides a total of 240K bytes of user memory alongside comprehensive diagnostic communication handling, featuring three built-in serial ports that natively support SNP, SNPX, and RTU protocols. Engineered to function within high-density plant topologies, it supports advanced firmware sequencing routines such as Sequential Event Recording, automatic user flash RAM configuration retention, and custom modem autodialing for real-time remote telemetry management.

Features

Single-slot modular form factor designed to fit directly into any standard Series 90-30 CPU baseplate.
Integrated 25 MHz 80386EX processor delivering a typical scan rate of 0.22 milliseconds per 1K of Boolean logic contacts.
Firmware-driven floating-point emulation supporting standardized industrial math function blocks.
Configurable memory mapping supporting up to 16K of %R register memory, 8K of %AI analog input memory, and 8K of %AQ analog output memory via DOS programming software.
Built-in Sequential Event Recorder function block capable of logging up to 1024 samples of 32 individual discrete bit references.
Three independent embedded serial communication ports including dedicated front-panel interfaces for point-to-point or multidrop configurations.
Advanced keyswitch logic control supporting transitions into configured STOP IO SCAN or STOP NO/IO states regardless of the initial PLC mode.

Applications

Centralized processing cores for multi-baseplate industrial Series 90-30 PLC automation systems.
Remote site telemetry monitoring installations using custom modem interfaces and automated pager enunciation tracking.
High-speed discrete manufacturing lines requiring precise execution tracking via Sequential Event Recording.
Multi-drop serial networks deploying localized data synchronization over SNP, SNPX, or RTU protocols.

Ordering Information

CPU Catalog Number	Firmware Upgrade Kit Catalog Number
IC693CPU351-(all versions)	44A736935-G11

Technical Specifications

Parameter	Specification
CPU Type	Single slot CPU module
Processor Type	80386EX
Processor Speed	25 MegaHertz
Typical Scan Rate	0.22 milliseconds per 1K of logic (Boolean contacts)
Load Required from Power Supply	890 milliamps from +5 VDC supply
Total Baseplates per System	8 (CPU baseplate + 7 expansion and/or remote)
User Memory (Total)	240K (245,760) Bytes
Discrete Input Points (%I)	2,048
Discrete Output Points (%Q)	2,048
Discrete Global Memory (%G)	1,280 bits
Internal Coils (%M)	4,096 bits
Output (Temporary) Coils (%T)	256 bits
System Status References (%S)	128 bits (%S, %SA, %SB, %SC - 32 bits each)
Register Memory (%R)	Configurable in 128 word increments, from 128 to 16,384 words (MS-DOS) or up to 32,640 words (Windows Ver. 2.2)
Analog Inputs (%AI)	Configurable in 128 word increments, from 128 to 8,192 words (MS-DOS) or up to 32,640 words (Windows Ver. 2.2)
Analog Outputs (%AQ)	Configurable in 128 word increments, from 128 to 8,192 words (MS-DOS) or up to 32,640 words (Windows Ver. 2.2)
System Registers (%SR)	28 words (reference table viewing only; no user logic referencing)
Timers/Counters	>2,000 (dependent on available user memory configuration)
Built-in Serial Ports	3 (one deployed via connector on PLC power supply baseplate; supports SNP/SNPX on all, RTU on Ports 1 and 2)
Option Module Communications	LAN-Supports multidrop; supports Ethernet, FIP, Profibus, GBC, GCM, and GCM+ option modules
Floating Point Math Support	Firmware-based (software emulation execution loop)
Type of Memory Storage	RAM and Flash memory
Circuit Board Revisions	Main Board: CV3A2 (44A737904-G01R02 or later) \| Daughter Board: CA3A2 (44A737909-G01R01 or later)
Manufacturer	GE Fanuc Automation
Country of Origin	USA
Shipping Weight (Calculated)	0.48 kg
Package Dimensions (Calculated)	245 mm x 140 mm x 45 mm

Connections and Interfaces

Connector / Interface	Function / Circuit Allocation
PORT 1	Embedded RS-232 physical connection port. Supports standalone SNP or SNPX configurations.
PORT 2	Embedded RS-485 physical connection interface port. Supports SNP, SNPX, and custom RTU network communications.
Power Supply Connector	Secondary internal bus interface linking the CPU to the third serial communication port resident on the primary power supply unit.

Installation Guidelines

To secure structural mounting integrity and safeguard module firmware logic against volatile transient corruption across the backplane, execute the configuration and installation cycle according to precise engineering rules.

CRITICAL WARNING: VOLATILE MEMORY DELETION RISK

Modifying, clearing, or rewriting the central processor firmware directly within flash memory will automatically reset and purge all diagnostic status tables, application code logic, configuration settings, and preset SNP ID mappings resident within the local RAM matrix. Verify that a comprehensive copy of your operational settings is securely backed up before performing firmware modifications.

Execute RAM-To-Flash Backup Procedure

Prior to running hardware configuration transfers, manually save current configuration parameters, status tables, and ladder blocks directly from the transient volatile RAM block into long-term Flash memory storage zones.

Establish Serial Programming Download Link

Interconnect a computer running MS-DOS 3.3/Windows 95 or newer via an RS-232 to RS-485/422 converter setup. If required, deploy the IC690ACC901 Mini Converter Kit to establish an isolated link to the embedded serial port matrix.

Restore Application Data and Configure Mappings

Following the seating or upgrade process, write user instructions back from storage into active RAM memory. Note that the custom station SNP identification string cannot be auto-loaded and must be assigned independently using a dedicated Hand-Held Programmer or configuration module interface.

Product Image	Model Number / Title	Condition	Availability	Action
	CX9020-N031-0002 BECKHOFF Embedded PC Basic CPU Module	Original New	In Stock	View Details

Key Features:

#CPU Modules #Series 90-30

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Does this processing unit require a separate hardware coprocessor to execute math operations?

No. This module relies on firmware-based software floating-point emulation to process floating-point math blocks directly within the central processing core.

What happens to the logic program stored in RAM if the firmware is updated?

Modifying or changing the module firmware automatically purges the volatile RAM contents. All logic code, configurations, and status registries must be fully backed up and restored following the update.

How can the station SNP ID string be reassigned after a system initialization clear?

The SNP identifier cannot be populated from a collective memory restoration block. It must be input independently via the programming configuration folder or by utilizing a separate Hand-Held Programmer.

What is the physical scan rate performance criteria for this processing assembly?

The module operates via a native 25 MHz processor, maintaining a baseline execution scan rate of 0.22 milliseconds per 1K of standard Boolean contact logic.

Global Express Shipping

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TECHNICAL SPECIFICATIONS

Color pattern	Black
Country of origin	United States
Power source	DC Power

General Electric IC693CPU351 Series 90-30 CPU Module