Description
The part number VMIVME-5565 refers to a high-speed fiber-optic reflective memory module manufactured by VMIC (later GE Fanuc, now Abaco Systems / AMETEK).
Product Overview
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Manufacturer: VMIC / GE Fanuc / Abaco Systems
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Part Number / Model: VMIVME-5565
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Component Type: Reflective Memory Node Card (RAMNET)
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Platform: VMEbus Architecture (6U Eurocard Form Factor)
Key Specifications & Features
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Reflective Memory: Equipped with onboard high-speed SRAM (typically configured with 128 MB or 256 MB). It allows multiple independent computers or controllers to share data in real-time with near-zero software overhead.
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Network Speed: Features a high serial connection speed (2.12 Gbaud) delivering network data transfer rates from 43 Mbyte/s (single longword access) up to 170 Mbyte/s (64-byte burst mode).
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Fiber-Optic Interface: Utilizes high-speed optical transceivers supporting multimode fiber (up to 300 meters) or single-mode fiber (up to 10 kilometers) variants depending on the specific factory configuration code.
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Interrupt Support: Supports hardware-based network interrupts, enabling any node on the reflective memory ring to signal or interrupt other connected nodes instantly.
Industrial Deployment
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Applications: Widely used in real-time, deterministic distributed simulation systems, defense and aerospace test stands, industrial process control, and nuclear or energy power plant monitoring where ultra-low latency multi-node data sharing is critical.
VMIVME-5565
VMIVME-5565
Product Overview
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | VMIVME-5565 |
| Module Type | VMEbus Fiber-Optic Reflective Memory Node Card |
| Manufacturer | VMIC / GE Intelligent Platforms / Abaco Systems |
| Form Factor | 6U Eurocard, single VME slot |
| Bus Standard | VMEbus IEEE 1014, A24/D32 slave interface |
| Serial Bit Rate | 2.12 Gbaud fiber link |
| Network Throughput | 43 MB/s (4-byte packets) ~ 170 MB/s (64-byte packets) |
| Dynamic Packet Size | 4 Bytes to 64 Bytes |
| Maximum Supported Nodes | Up to 256 nodes per ring network |
| Onboard Memory | 64 MB / 128 MB SDRAM (model variant dependent) |
| Fiber Interface | Multimode / Single-mode optical transceiver |
| Fiber Transmission Distance | Multimode: ≤300 m; Single-mode: ≤10 km |
| Interrupt Function | Programmable network interrupts with data payload support |
| Power Supply | +5 VDC via VME backplane |
| Operating Temperature | 0℃ ~ +60℃ |
| Ambient Humidity | 5%–95% non-condensing |
| Spare Part Status | Original production discontinued; surplus new and refurbished modules available |
Key Features
- Transparent shared memory mechanism; data synchronization handled by hardware without heavy CPU intervention
- Ultra-low deterministic transmission latency, ideal for high-precision synchronous control and real-time simulation
- Supports ring topology network, optional node bypass function to maintain network integrity upon single node failure
- Built-in CRC error detection ensures reliable data transmission in complex electromagnetic environments
- Equipped with transmit/receive FIFO buffers to stabilize throughput under burst data loads
- Compatible with mainstream VME single-board computers and real-time operating systems
- Front-panel status LEDs for convenient network diagnosis and fault observation
- Different hardware variants with varied memory capacity cannot be directly interchanged; full part number verification is required before replacement
- Industrial-grade PCB layout with anti-vibration capability for continuous long-cycle operation
