Replicates writes across a reflective-memory network so participating nodes share deterministic data.
Product Overview
IC695RMX228-ACAB is an Emerson PACSystems RX3i Redundancy Memory Xchange module with 128 MB of reflective memory and a single-mode optical transceiver.
It can operate as a node on a compatible 5565-family reflective-memory network or as the dedicated synchronization link between CPUs in an RX3i Hot Standby CPU Redundancy system.
Emerson identifies the ACAB release as hardware -ACxx with firmware 2.01, issued in March 2016. A documented rare loss-of-module condition after a power cycle can be cleared by a subsequent power cycle.
Performance
Supports up to 256 compatible nodes in a daisy-chained optical loop.
Provides a dedicated RX3i hot-standby synchronization link when configured for redundancy.
Uses single-mode optical components and must not be directly mixed with multimode RMX/CMX devices.
Technical Details
| Manufacturer | Emerson / legacy GE Intelligent Platforms |
|---|---|
| Exact model | IC695RMX228-ACAB |
| Platform | PACSystems RX3i |
| Module type | Redundancy Memory Xchange / reflective memory |
| Memory | 128 MB |
| Optical interface | Single-mode transceiver |
| Network family | Compatible 5565 reflective-memory devices |
| Maximum network nodes | 256 |
| Redundancy role | Dedicated synchronization link for supported RX3i hot standby CPUs |
| Hardware release | -ACxx |
| Firmware | 2.01 |
| Release date | March 2016 |
| Known release note | Rare loss-of-module indication after power cycle may require a subsequent power cycle |
| Minimum CPU support context | Use a compatible RX3i CPU/firmware release documented for RMX228 |
System Integration
- Use single-mode fiber, connectors and any hub approved for the RMX228 network design.
- Do not directly connect the single-mode RMX228 optical path to multimode CMX128/RMX128 hardware.
- Confirm CPU firmware, PAC Machine Edition support and redundancy configuration before installation.
- Keep node ID, memory offset, interrupt and redundancy settings from the approved project.
Applications
- RX3i hot-standby CPU synchronization.
- Deterministic shared-memory exchange among PLCs and compatible computing nodes.
- High-availability control architectures using documented single-mode optical links.
- Legacy reflective-memory network expansion with exact hardware and firmware control.
About IndustryParts
https://www.industryparts.com/Optical mode and release identity remain visible
IndustryParts handles IC695RMX228-ACAB with its single-mode network, ACAB firmware record and RX3i redundancy role clearly separated from multimode variants.
- ACAB release retained
- Single-mode path confirmed
- Node and redundancy records requested
FAQ
What evidence should accompany an IC695RMX228-ACAB enquiry?
Provide both module labels, CPU models and firmware, PAC Machine Edition release, node map, fiber type, connector or hub details, redundancy role and quantity.
Can IC695RMX228-ACAB connect directly to an IC695RMX128 network?
Not through an unconverted optical link. RMX228 is single-mode while RMX128 is multimode; use only a manufacturer-approved hub or conversion architecture.
What ACAB-specific service note should be retained?
Emerson documents hardware -ACxx and firmware 2.01 and notes a rare post-power-cycle loss-of-module state that can clear after another power cycle.
What configuration must be saved before changing IC695RMX228-ACAB?
Save node ID, memory offset, network interrupts, redundancy settings, CPU project, fiber route and the diagnostic state of every linked node.
What proves IC695RMX228-ACAB is ready after replacement?
Confirm exact release, clean module status, intact optical loop, correct shared-memory updates, redundancy synchronization and a controlled switchover test where applicable.
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