Description
Key Technical Specifications
- Model Number: VMIVME-5565
- Manufacturer: GE Fanuc Embedded Systems. Series: VMIxxx-5565 Reflective Memory Network
- Module Type: VMEbus Reflective Memory (RFM) Node Controller
- Network Speed: 2.12 Gbaud serial fiber-optic connection
- Onboard Memory: 64 Mbyte or 128 Mbyte SDRAM (ECC protected)
- Data Throughput: Up to 174 MB/s sustained transfer rate
- Network Topology: Supports up to 256 nodes per network
- Fiber Distance: Up to 300 meters (multimode) or 10 km (single-mode)
- Bus Interface: VMEbus, 64-bit/32-bit compatible
- DMA Channels: Two independent DMA channels for zero-CPU-overhead transfers
- Interrupts: Any node can generate interrupts to any other node or all nodes
- Redundancy: Optional redundant transmission mode for fault tolerance
Functional Role & Application Analysis
The VMIVME-5565 is a specialized reflective memory node designed to solve the most demanding real-time data sharing challenges in distributed control systems. Unlike traditional network protocols that require CPU intervention and software stack overhead, this module maps shared memory directly across all network nodes via fiber-optic broadcast. When one node writes to its local reflective memory, the data is automatically and deterministically written to the identical memory address on every other node in the network with latency as low as 450-500 nanoseconds per node. The processor simply performs a standard memory write operation; the RFM controller hardware handles all network communication transparently.
Typical use cases include:
- Real-time flight and motion simulators, where multiple computers running different subsystem models must share state data with microsecond-level synchronization and zero jitter.
- High-speed industrial process control (steel rolling, aluminum extrusion), where PLCs and VME controllers exchange actuator commands and sensor feedback faster than the mechanical process can change.
- Distributed test and measurement systems, requiring deterministic, low-latency data exchange between acquisition nodes and computation engines.
- Military and aerospace defense systems, where redundant, fault-tolerant real-time sensor fusion and data sharing are mission-critical.
Our Quality Standard & Testing Process
We understand that the cost of an unreliable reflective memory node is far greater than its purchase price. A failed RFM node can break the real-time data ring, causing simulation desynchronization or control system failure. We have established a rigorous, multi-stage testing process to ensure every VMIVME-5565 we ship is 100% functional.
- Visual & Component Inspection: All boards undergo professional cleaning and microscopic inspection to verify no physical damage, cracked solder joints, corroded fiber-optic connectors, or degraded capacitors.
- Live Network Test: The module is installed in a live reflective memory test ring with multiple nodes and run for 24-48 hours to verify continuous data broadcast, memory synchronization, and interrupt delivery.
- Full-Function Diagnostics: We validate onboard SDRAM integrity, DMA channel throughput, fiber-optic link quality, and deterministic latency across the full 64MB/128MB memory space.
- Redundancy & Fault Tolerance Verification: If configured for redundant mode, we simulate node failures and link breaks to confirm seamless failover and data continuity.
- Warranty Backing: Only parts that pass all diagnostic tests are approved for shipment and backed by our full 12-month warranty.
GE-VMIVME-5565
Compatibility & Migration Paths
To ensure this VMIVME-5565 is 100% compatible with your reflective memory network, you must check these key compatibility points. Reflective memory networks are highly sensitive to configuration consistency, and mismatched nodes will cause network failure.
- Memory Size Match: Confirm whether your existing network uses 64MB or 128MB SDRAM nodes. Mixing memory sizes across nodes can cause address mapping errors and data corruption.
- Fiber Type Verification: Determine whether your network uses multimode or single-mode fiber. The VMIVME-5565 supports both, but the SFP/transceiver module must match the installed fiber infrastructure.
- Network Topology Consistency: Confirm whether your network operates in ring or star topology. Star topology requires an ACC-5595 managed hub; ring topology requires all nodes to be powered for network continuity.
- Firmware Version Alignment: All nodes in a reflective memory network should run matching firmware. Verify the firmware revision of the replacement VMIVME-5565 matches your existing network nodes to prevent protocol mismatches.
- Get Expert Help: Unsure about memory sizing, fiber type, or firmware compatibility? Contact our technical team today for a free reflective memory network compatibility verification before ordering.
