GE IC695CMX128 Control Memory Xchange Module

Description

Real-World Use & Application Scenarios
The GE IC695CMX128 typically serves as a high-speed, networked memory exchange component within PACSystems RX3i environments, enabling fast, deterministic data sharing between controllers, I/O, and peripheral devices. In plants employing reflective memory or distributed control architectures, this module supports rapid data synchronization across nodes, which is crucial for tightly coordinated batch processes, multi-PLC control loops, and synchronized machine automation. Industries that rely on RX3i systems—such as chemical processing, metals, refining, utilities, and large-scale manufacturing—benefit from the IC695CMX128 when building fault-tolerant, scalable control networks where low latency and reliable memory sharing improve both control fidelity and system resilience. In retrofit projects, the module can help extend existing RX3i capabilities by providing a robust memory exchange backbone that interoperates with legacy and modern field devices, reducing integration risk and enabling smoother migrations. The inclusion of reflective memory features typically helps engineers achieve deterministic timing for cross-board data transfers, which is essential for high-performance control tasks and synchronized data logging.

Detailed Technical Specifications

• Model: IC695CMX128
• Brand: Emerson (GE Fanuc RX3i family)
• Type: Control Memory Xchange Module
• Network/Data Sharing: Reflective memory across RX3i nodes
• Bus/Backplane Compatibility: RX3i universal backplane
• Memory Capacity: 128 MB (typical for relay/reflective memory nodes)
• Interface: Fiber-optic based network connection (LC connectors standard)
• Power Requirements: Low, 3.3V/5V typical backplane-derived supply
• Operating Temperature: Industrial range (approx. 0°C to 60°C typical)
• Mounting: RX3i backplane slot; hot-swappable under proper procedure
• Certifications: Industry-standard (varies by batch and region)
• Diagnostic Capabilities: Network health, node status, and memory integrity indicators
• Networking: Supports multi-node reflective memory network with configurable offsets

Product Introduction & Positioning
The IC695CMX128 is a Control Memory Xchange Module designed for PACSystems RX3i, serving as a dedicated networked memory node that supports high-speed data exchange across RX3i components. It plugs into the RX3i universal backplane and operates without CPU processing, relying on its memory sharing capabilities to coordinate data among connected nodes. This module is positioned to complement RX3i processors and I/O, enabling scalable, real-time data distribution across a plant’s automation network. For engineers and integrators, the IC695CMX128 offers a means to implement complex, multi-node control schemes with predictable data access patterns, while preserving the modularity and upgrade paths characteristic of RX3i systems. Its value emerges from minimizing data latency in distributed control, simplifying network topology, and enabling robust fault-tolerant configurations through reflective memory technology.

Key Technical Features & Functional Benefits
The core strength of the IC695CMX128 lies in its reflective memory capabilities, providing deterministic data replication across RX3i nodes and enabling high-throughput inter-device communication without CPU intervention. This makes it well-suited for applications requiring synchronized state information across multiple controllers, such as coordinated process control, shared recipe management, and real-time trend aggregation. The module’s architecture typically supports multi-node scalability, efficient use of fiber optic links, and compatibility with the RX3i backplane, which helps maintain consistent timing across the network. In practice, engineers benefit from reduced interprocessor signaling overhead, improved data coherence for distributed control loops, and streamlined maintenance thanks to centralized memory management. Since memory exchange modules are often specified for mission-critical networks, long-term reliability—combined with environmental robustness and steady power consumption—also factors into lifecycle planning and spares strategy.