IC695RMX128 Redundancy Memory Module for PACSystems RX3i

Why Redundancy Matters in Modern Industrial Control

In today's manufacturing environments, unplanned downtime can cost thousands of dollars per minute. Engineers increasingly rely on redundant control architectures to ensure continuous operation. The IC695RMX128 redundancy memory module from GE Fanuc addresses this need by providing a dedicated, high-speed link between redundant RX3i CPUs.

Introducing the IC695RMX128 Redundancy Memory Module

The IC695RMX128 is a PACSystems RX3i Redundancy Memory Exchange Module manufactured by Emerson Automation, formerly GE Intelligent Platforms. It functions as a single node on a reflective memory topology or as a dedicated memory module for a redundant RX3i CPU pair. This module ensures constant data synchronization between primary and backup controllers.

With 128 MB of SDRAM user memory, the IC695RMX128 supports high-speed data exchange. It operates on a single-mode fiber-optic network using LC-type connectors, achieving transmission speeds of up to 2.12 Gbaud. The module draws 580 mA at 3.3 VDC and 220 mA at 5 VDC.

Technical Specifications and Performance

The IC695RMX128 features dynamic packet size controlled by the RMC128/RMX228 module. It supports up to 256 nodes per network, making it suitable for large-scale reflective memory topologies. The module includes network error detection and supports hot insertion and removal, minimizing system interruption during maintenance.

Configuration is performed entirely through programming software, eliminating the need for jumpers or DIP switches. This centralized approach simplifies modifications and reduces hardware intervention. The module occupies a single slot in the RX3i rack.

Applications in Redundant Control Systems

The primary application of the IC695RMX128 is in hot standby CPU redundancy systems. In such setups, a second CPU acts as a backup for the main controller, with the IC695RMX128 providing a constant data link between them. This ensures seamless failover if the primary CPU fails.

Another key use case is in reflective memory networks, where any update on one node is instantly reflected to all other nodes. This is critical in applications requiring real-time data sharing across multiple controllers, such as in packaging lines or material handling systems.

Real-World Application Example

Consider a typical automotive assembly line where two RX3i CPUs control different sections of the process. The IC695RMX128 links these controllers, ensuring that if one CPU fails, the backup takes over without data loss. This setup minimizes production stoppages and protects against costly downtime.

Compatibility and Integration

The IC695RMX128 is compatible with the RMC128/RMX228 module and is designed specifically for redundant RX3i CPU configurations. It cannot be used for general-purpose memory exchange. A complete communication path requires a primary RMX unit and a corresponding secondary RMX unit, connected via two high-speed fiber-optic cables forming a 2-node ring.

Integration is straightforward: the module plugs into a single slot in the RX3i rack, and configuration is done through the programming software. The module supports hot insertion, allowing installation without powering down the system.

Why Choose AutoDCSTech

AutoDCSTech offers genuine GE IC695RMX128 modules with reliable supply and fast shipping. Our team understands industrial automation needs and can help you select the right components for your redundant control system. We provide quality assurance and competitive pricing.

Frequently Asked Questions About the IC695RMX128

What is the main function of the IC695RMX128?

The IC695RMX128 acts as a redundancy memory exchange module for PACSystems RX3i CPUs. It provides a dedicated link between redundant controllers, ensuring data synchronization and seamless failover.

What type of network does the IC695RMX128 use?

It uses a single-mode fiber-optic network with LC-type connectors, supporting transmission speeds of up to 2.12 Gbaud. The network can connect up to 256 nodes.

Can the IC695RMX128 be used for general memory exchange?

No, the IC695RMX128 is specifically designed for redundancy systems and cannot perform general-purpose memory exchange. It must be used with a corresponding secondary RMX unit.

How is the IC695RMX128 configured?

Configuration is done entirely through programming software, not by jumpers or DIP switches. This allows centralized modification and minimizes hardware interruption.

Does the IC695RMX128 support hot insertion?

Yes, the module supports hot insertion and removal, allowing installation or replacement while the system is powered on.

Conclusion

The IC695RMX128 is a critical component for engineers building redundant control systems with PACSystems RX3i. Its 128MB memory, high-speed fiber-optic network, and hot-swap capability make it a reliable choice for minimizing downtime. Please verify current lifecycle status and availability with AutoDCSTech before ordering.