GE IC698CMX016 / VMIVME-5567-000 / 350-005567-000 Control Memory Xchange Module

The GE IC698CMX016 (also known as VMIVME-5567-000 or 350-005567-000) is a Control Memory Xchange (CMX) reflective memory module designed for the PACSystems RX7i automation platform. This module enables high-speed, deterministic data sharing between multiple controllers, computers, or subsystems over a fiber-optic reflective memory network, ensuring real-time synchronization and reliable communication across distributed control systems.

Built for mission-critical industrial applications, the IC698CMX016 is commonly used in power generation, turbine control, and process automation systems where consistent data exchange and system redundancy are essential.

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Technical Specifications

Parameter	Description
Model Numbers	IC698CMX016 / VMIVME-5567-000 / 350-005567-000
Module Type	Control Memory Xchange (Reflective Memory)
Memory Capacity	16 MB SDRAM
Data Transfer Rate	Up to 174 MB/s (depending on packet size)
Network Interface	Dual LC-type fiber-optic ports (TX/RX)
Communication Mode	Deterministic reflective memory ring
Max Network Nodes	Up to 256 devices per fiber loop
Voltage Requirement	+5 V DC (supplied via VME backplane)
Typical Current	1.8 A
Form Factor	Single-slot 6U VME64x
Operating Temperature	-20°C to +85°C
Storage Temperature	-40°C to +85°C
Mounting	VME chassis slot installation

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Key Features

• Deterministic High-Speed Communication: Data written to one node’s memory is automatically updated in all nodes on the network with minimal latency.

• Real-Time Synchronization: Ensures identical data across all controllers and computing nodes without requiring CPU overhead.

• Dual Fiber Ports: Supports full-duplex communication and redundant network configurations for maximum reliability.

• Scalable Architecture: Allows up to 256 connected nodes in a single fiber-optic ring.

• Rugged Industrial Design: Operates reliably in harsh environments and high-vibration conditions.

• Low-Latency Data Sharing: Ideal for turbine, motion control, and safety-critical automation systems.

• Easy Integration: Fully compatible with PACSystems RX7i and VME-based platforms.

• Diagnostics & Monitoring: Status LEDs indicate link activity, synchronization, and error states.

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Structure & Composition

The IC698CMX016 module consists of a high-speed reflective memory controller, SDRAM storage, and dual fiber-optic ports for data transfer. It mounts into a VME64x backplane and communicates directly with the system CPU and other networked devices through shared memory operations.

The front panel includes:

• Two LC optical connectors (for network loop connections)

• LED indicators for Transmit (TX), Receive (RX), Link, and Error status

• Optional configuration switches for network setup

Internally, the board uses high-speed memory mapping logic to replicate memory contents across the network in microseconds, guaranteeing consistent system states across all participating devices.

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Applications

The GE IC698CMX016 is used in high-reliability, time-sensitive automation systems, including:

• Gas and Steam Turbine Control Systems

• Power Generation and Distribution Networks

• Process Automation and Control

• Industrial Motion Control Systems

• Aerospace Test Equipment

• Marine and Defense Automation Platforms

Its ability to synchronize control data instantly across multiple CPUs makes it essential for redundant control architectures, real-time data acquisition, and distributed automation systems.

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Installation & Maintenance

Installation Steps:

1. Ensure system power is off before inserting the module.

2. Mount the IC698CMX016 into the appropriate VME64x slot and secure it with retaining screws.

3. Connect the fiber-optic cables to the TX and RX ports according to the network topology.

4. Verify that the fiber loop is correctly terminated and all nodes are powered.

5. Power on the system and check the LED indicators for normal operation.

Maintenance Recommendations:

• Periodically inspect optical cables and connectors for damage or contamination.

• Verify synchronization status and link activity indicators regularly.

• Keep firmware and system configurations updated to maintain network performance.

• Replace the module with a genuine equivalent if any persistent link or synchronization faults occur.

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Performance & Reliability

The GE IC698CMX016 / VMIVME-5567-000 / 350-005567-000 provides deterministic, low-latency reflective memory performance, ensuring continuous system synchronization even during transient network loads. Its fiber-based communication eliminates electrical noise issues and supports long-distance data transmission between distributed systems.

This module meets stringent industrial standards for reliability, environmental endurance, and EMI/EMC compliance, making it ideal for mission-critical control environments where precision and uptime are non-negotiable.

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Conclusion

The GE IC698CMX016 Control Memory Xchange Module is a robust, high-speed reflective memory solution engineered for real-time data sharing and system synchronization. With its fiber-optic interface, scalable network capability, and rugged VME design, it remains one of the most reliable modules for distributed automation and turbine control systems.