IC693CPU352 GE Fanuc 90-30 PLC Processor 25MHz 240KB

Technical Specifications

Product Overview

The GE Fanuc IC693CPU352 is a high-performance, single-slot modular CPU processor for the legacy Series 90-30 Programmable Logic Controller (PLC) family. Weighing approximately 0.30 kg (0.66 lbs), this compact module slots directly into the CPU baseplate to coordinate complex industrial processes. Driven by an Intel 80386EX 25 MHz processor with a built-in mathematical co-processor, it handles complex floating-point mathematical computations locally to deliver precise, fractional-value process control. Modernized with up to 240 KB of flash user memory on firmware version 9.0 or later, it easily scales to manage massive multi-rack layouts of up to seven local expansion racks and seven remote I/O racks.

Core Technical Advantages

• Hardware-Based Floating Point Calculations: An onboard mathematical co-processor processes decimal or fractional values locally, optimizing PID loops for HMI/SCADA configurations without stalling the main execution cycle.
• Substantial Logical Scalability: Manages up to 2048 discrete input/output points and up to 32,640 analog registry words to supervise large, complex machinery lines.
• Dense Three-Port Connectivity: Provides native SNP, SNP-X, and Modbus RTU slave messaging natively over three communication points (including a dedicated RJ45 Port 1 and a 9-pin D-sub Port 2) without taking up valuable rack space.
• Lightweight Rack Layout: At only 0.30 kg (0.66 lbs), this module inserts into standard backplane slots with a minimal physical profile, drawing a highly efficient 910 mA at 5 V DC and outputting a modest 4.55 Watts of heat.

Installation Guide

Ensure backplane power is fully deactivated before mounting the 0.30 kg module into the single dedicated CPU slot of your master baseplate. Align the rear connector pins and push firmly until the top and bottom industrial plastic retaining clips click into locked positions. Set the physical key-switch located on the front bezel of the IC693CPU352 to "Stop" before powering the system. Connect your programming interface to RJ45 Port 1 to upload or configure your system variables using Proficy Machine Edition, VersaPro, or LogixMaster 90-30 programming software. Once successfully configured, toggle the key-switch to "Run" to initiate the active logic loop.

Technical FAQs

Q1: Why is the user program memory listed as both 80 Kbytes and 240 Kbytes?
A1: The onboard user memory is directly dependent on your CPU's firmware level. Modules running legacy firmware versions older than Release 9.0 are limited to 80 KB of program space, whereas firmware Release 9.0 or higher unlocks the full 240 KB allocation.

Q2: Can this CPU run as a Modbus RTU Master natively?
A2: No. Out-of-the-box, the serial ports on the IC693CPU352 support Modbus RTU Slave and SNP/SNP-X protocols. If your network topology requires Modbus RTU Master or dedicated CMM communication, you must install an auxiliary PCM or CMM module in an adjacent slot.

Q3: How much load does this 0.30 kg module place on the backplane power supply?
A3: The IC693CPU352 CPU draws 910 mA from the internal 5 V DC logic rail provided by your 90-30 power supply. It places no power draw on the secondary 12 V DC power supply lines.