GE IC698RMX016 (VMIVME‑5567‑100) Redundancy Memory Xchange Reflective‑Memory Module

Technical Specifications

Model：IC698RMX016，VMIVME‑5567‑100

Brand：GE Fanuc（Emerson Automation）

Product Type：Redundancy Memory Xchange(RMX) reflective‑memory fiber‑optic module

Applicable System：GE PACSystems RX7i VME64 rack platform，match with IC698CRE040 redundant CPU for hot‑standby system；standard VME64 single‑width form factor

On‑board Memory：16MB parity‑checked SDRAM reflective shared memory

Fiber Interface：LC multi‑mode fiber connector，62.5/125μm multi‑mode optical fiber

Fiber Data Rate：2.12Gbaud high‑speed optical transmission

Max Transmission Distance：2000 meters per fiber segment

Network Topology：Point‑to‑point for RX7i hot‑standby；also support fiber ring multi‑node reflective‑memory network

Working Mode：Hardware‑level deterministic data mirroring，CPU‑independent transmission，no CPU overhead for data synchronization

Backplane Bus：VME64 backplane interface，single‑slot plug‑in installation inside RX7i rack

Backplane Power：5VDC from VME backplane，typical consumption 1.8A

LED Indicators：Module OK status LED, fiber link status LED, network activity LED on front panel

Configuration Tool：Proficy Machine Edition software for redundancy parameter setup

Operating Temperature：‑20℃ ~ +60℃，non‑condensing

Storage Temperature：‑40℃ ~ +85℃

Humidity：5%‑95% non‑condensing

Weight：0.42kg

Dimension：160mm ×233mm ×32mm

Application：Power‑plant critical control，generator‑transformer redundant control system，petrochemical high‑availability process control，legacy RX7i hot‑standby PAC system maintenance and spare‑part replacement.

Product Function Description

IC698RMX016 (VMIVME‑5567‑100) is the dedicated fiber‑optic reflective‑memory redundancy‑synchronization module for GE PACSystems RX7i platform。

This module is the core hardware link for RX7i hot‑standby redundant system. A pair of IC698RMX016 modules are deployed in primary‑CPU rack and standby‑CPU rack respectively, connected via multi‑mode optical fiber. It realizes hardware‑level high‑speed mirror synchronization of user logic variables, I/O status, system parameters and fault records between primary and standby CPUs, and does not occupy CPU scan‑cycle resources。

Different from ordinary Ethernet communication, reflective‑memory completes data mirroring by hardware logic. When data is written into local reflective‑memory space, the data will be automatically transmitted to the opposite‑end module through optical fiber, realizing microsecond‑level deterministic data synchronization. When the main CPU fails, the standby CPU has obtained complete real‑time running data, so as to complete bumpless system switchover within one scan cycle.

Besides point‑to‑point hot‑standby application, this module also supports multi‑node fiber ring reflective‑memory network, which can realize real‑time shared‑memory data interaction among multiple VME‑platform controllers. The front‑panel LED indicators directly display module operating health and fiber link quality, which is convenient for on‑site commissioning and fault location of fiber breakage, link mismatch and other faults.

The module adopts VME64 single‑width plug‑in structure, easy for rack installation and replacement. It must be used in pairs in RX7i hot‑standby projects, and the firmware versions of paired modules and matching redundant CPU must be consistent. It is widely used for spare‑part maintenance of old GE Fanuc PACSystem RX7i redundant control systems in power‑plant and petrochemical sites.

Product Details

Standard VME64 single‑width plug‑in reflective‑memory board, industrial‑grade anti‑interference hardware design, adapts to complex electromagnetic‑interference environment of power‑plant and industrial‑control cabinet. This legacy module has been discontinued by original manufacturer, mainly used for old‑equipment overhaul and spare‑part replacement. Please confirm fiber‑cable specification, paired‑module firmware consistency and CPU‑redundancy‑parameter configuration before commissioning. Strict ESD protection shall be adopted during installation.