GE IC698RMX016｜Redundancy Memory Xchange (RMX) Module｜

Brand: GE Fanuc / Emerson
Name: Redundancy Memory Xchange (RMX) Module
Platform: PACSystems RX7i, single‑width VME64 module；Not for RX3i
Equivalent part: VMIVME‑5567‑100
Electrical & Hardware Specifications
User Memory: 16 MB SDRAM with parity checking
Fiber Data Rate: 2.12 Gbaud
Fiber Connector: LC multimode (IEC 61754‑20), zirconia ceramic ferrule
Max fiber distance: 300 m multimode fibre
Network capacity: up to 256 nodes for reflective‑memory ring network
Power consumption: 1.8 A @ +5 VDC, powered from VME backplane
Packet size: dynamic auto‑adjusted
Physical dimension: 6.299 in × 9.187 in
Weight: approx. 0.59 kg

Environmental Ratings
Operating temperature: ‑20 ℃ ~ +60 ℃
Storage temperature: ‑40 ℃ ~ +85 ℃
Humidity: 5 %‑95 % RH, non‑condensing
Protection: IP20, cabinet‑mount only

Two Operating Modes
1. RX7i Hot‑Standby Redundancy Mode (Primary use‑case)
Dedicated high‑speed fibre link between primary and standby RX7i CPU for hot‑standby redundancy.
One IC698RMX016 required per rack; two modules total for a redundant CPU pair.
Mirrors CPU memory, variables for bumpless switch‑over upon master failure.
Auto‑configuration by RX7i CPU; minimal manual setup.
CPU firmware requirement: RX7i CPU firmware ≥ V2.00
Compatible CPUs: IC698CPE010, IC698CPE020‑CC, IC698CPE030, IC698CPE040
2. General‑Purpose Reflective‑Memory Network
Works as standard reflective‑memory node, compatible with VMIC‑5565 family devices.
Hardware‑driven memory broadcast, low CPU overhead.
Supports ring / daisy‑chain topology; TX of one node connects to RX of next node.
When not used for CPU redundancy, RMX016 behaves functionally same as IC698CMX016.Installation & Practical Notes
Recommended slot: Slot 3 or Slot 4 of RX7i main rack for optimal VME interrupt priority; other slots are physically allowed but not preferred.
Not hot‑swappable: power‑off rack before inserting / removing module.
Front‑panel LEDs indicate link status, network activity, parity fault.
Module remains inactive until hardware configuration is downloaded from Machine Edition.
Main rack maximum: up to four Memory‑Xchange modules (mix of RMX016 / CMX016) allowed per RX7i main rack.