GE IC697CPM790 Series 90‑70 High‑Performance Floating‑Point CPU Module

Technical Specifications

Model：IC697CPM790

Brand：GE Fanuc（Emerson Automation）

Product Type：Series90‑70 single‑slot PLC central processing unit

Processor：64MHz Intel 80486DX2，32‑bit floating‑point arithmetic support

Memory：1MB battery‑backed RAM,512KB for user logic program

Discrete I/O Capacity：Max 12288 discrete points,8000 analog I/O words

Boolean Scan Speed：0.4μs per boolean function

Backplane Bus：VME C.1 standard,install in first slot of Series90‑70 chassis

Serial Interface：15‑pin D‑sub connector,configurable RS‑232 / RS‑485,support SNPX,CCM protocol

Redundancy Function：Support TMR triple modular redundancy with dedicated C application program

Feature：Battery‑backed real‑time clock,front‑panel status LED,keyswitch memory protection,firmware in‑system upgrade

Power Consumption：Max 6.8W,+5VDC power supply from rack backplane

Working Temperature：0℃ ~ +60℃，non‑condensing

Storage Temperature：‑40℃ ~ +85℃

Humidity：5%‑95% non‑condensing

Application：Emergency shutdown system,fire‑gas control,power plant safety control,Series90‑70 system renovation and spare‑part replacement。

Product Details

IC697CPM790 is a high‑performance single‑slot CPU module for GE Series90‑70 PLC platform,designed for safety‑critical industrial control scenarios with floating‑point computing capability。

This CPU occupies one slot of Series90‑70 VME‑bus rack,interacts with I/O boards and special function modules via VME C.1 backplane bus. It adopts 64MHz 80486DX2 processor,provides 1MB battery‑backup memory to preserve user logic,data and system configuration during power failure。

It supports up to 12288 discrete I/O points and 8000 analog I/O words,meets large‑scale process control requirements. The built‑in serial port realizes programming download,PLC‑to‑PLC peer‑to‑peer communication and HMI connection. It can cooperate with Genius LAN for distributed I/O networking。

The module is hardware ready for TMR triple modular redundancy architecture,mostly applied in ESD emergency shutdown and fire‑gas safety systems. It requires supporting C‑language application program to complete redundancy logic and automatic diagnosis function。

Front panel is equipped with multi‑status LED indicators and key‑lock memory protection switch,convenient for on‑site operation and maintenance. Firmware can be upgraded online without removing module. It is widely used in power,petrochemical safety‑related projects,as replacement spare‑part for legacy Series90‑70 control racks。