Description

The GE VMIVME-5567-000 is a high-performance, fiber-optic Reflector Memory (also known as Global Memory) module designed for the VME-based PACSystems RX7i platform. This critical communications module acts as a high-speed data bridge, enabling the deterministic exchange of large volumes of data between multiple RX7i controllers or between an RX7i controller and other compatible systems, such as the legacy Series 90-70 PLCs. When installed in the same rack as a CPU like the GE IC698CMX016, the VMIVME-5567-000 facilitates the creation of tightly synchronized multi-processor systems essential for large-scale, complex automation applications.

The core function of the GE VMIVME-5567-000 is to maintain a shared “global” data table in its dual-port memory that is accessible at high speed by all connected nodes via a dedicated fiber-optic network. This allows for seamless and rapid data sharing—such as process variables, setpoints, and status information—across geographically distributed systems with nanosecond-level synchronization. The use of fiber-optic cables provides inherent immunity to electromagnetic interference (EMI), making the GE VMIVME-5567-000 ideal for harsh industrial environments like steel mills or power generation plants. This capability is fundamental for applications requiring redundant control architectures or distributed control across multiple chassis, ensuring all parts of the system operate from a single, consistent set of data.

IC698CMX016 VMIVME-5567-000 GE

Technical Specifications

Main Features and Advantages

The GE VMIVME-5567-000 delivers several key advantages for high-performance control systems. Its most significant feature is the high-speed, deterministic data exchange. Unlike standard Ethernet networks that can suffer from non-deterministic delays, the dedicated fiber-optic reflector memory network provides predictable, low-latency communication, which is critical for precise machine synchronization and high-speed interlocking. This ensures that time-sensitive control actions are coordinated across the entire system without jitter.

Robustness and reliability are engineered into the GE VMIVME-5567-000. The fiber-optic interface is completely immune to EMI, ground loops, and voltage spikes, which are common challenges in industrial settings. This results in extremely high data integrity over long distances (up to 500 meters between nodes). Furthermore, the module’s design supports fault-tolerant system architectures. In a dual-redundant CPU setup using the IC698CMX016, the VMIVME-5567-000 can be used to maintain continuous, synchronized data between the active and standby controllers, enabling bumpless transfer of control during a fault condition. This capability is indispensable for applications where unscheduled downtime carries extreme costs or risks.

Application Field

The primary application of the GE VMIVME-5567-000 is in large, mission-critical systems that require tightly coordinated control across multiple processing units. In power generation, especially turbine control, it is used to create redundant controller pairs, ensuring that a backup controller is always in perfect sync with the primary, allowing for instantaneous and seamless failover to maintain grid stability and prevent equipment damage. The deterministic data sharing of the GE VMIVME-5567-000 is vital for these safety-critical functions.

In large material handling and distribution centers, such as airport baggage systems or parcel sorting facilities, multiple IC698CMX016 controllers may manage different zones. The VMIVME-5567-000 network allows these controllers to share real-time package location, destination data, and conveyor status, enabling a smooth, continuous flow of items without bottlenecks. Similarly, in metals industries for rolling mill control, and in water/wastewater management for large, distributed treatment plants, the GE VMIVME-5567-000 provides the high-integrity communication backbone necessary to coordinate complex, interdependent processes across a wide area, ensuring efficient and synchronized operation.

Related Products

IC698CMX016: The primary RX7i CPU module that the VMIVME-5567-000 is designed to work with, executing the control logic that utilizes the shared global data.

IC698CRE020: A redundant CPU module for RX7i; the VMIVME-5567-000 is often used to maintain synchronization between the redundant pair.

VMIVME-5577-000: A later or enhanced version of the reflector memory module, offering potentially greater memory capacity or performance.

IC690GEM002: A Genius® I/O Network Interface Module for Series 90-70, which can also interface with a VMIVME-5567-000 network, allowing RX7i systems to integrate with legacy Genius I/O blocks.

IC698CHS117 / CHS103: The RX7i chassis that provide the VME backplane for housing both the IC698CMX016 CPU and the VMIVME-5567-000 module.

IC698CMX016 VMIVME-5567-000 GE

Installation and Maintenance

Pre-installation preparation: Before installing the GE VMIVME-5567-000, ensure the RX7i chassis is powered down. Verify that an appropriate slot is available; the module can typically be installed in any VME slot except the one reserved for the CPU. Plan the fiber-optic network topology, including the daisy-chaining of nodes and the required cable lengths. Have the correct ST-type fiber-optic cables on hand, and inspect them for any signs of damage before connection. Handle the VMIVME-5567-000 module with care, using an anti-static wrist strap.

Maintenance recommendations: The GE VMIVME-5567-000 is a solid-state device requiring minimal maintenance. The primary maintenance activity involves periodic visual inspection of the fiber-optic connectors and cables for cleanliness and physical damage. Dust on connectors can significantly degrade signal quality. Clean connectors only with approved tools and materials. During system operation, monitor the status LEDs on the front panel of the VMIVME-5567-000 to ensure proper power and fiber link integrity. Any fault indications should be investigated immediately by checking cable connections and reviewing system diagnostics in the programming software.