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VMICLB-5565 Reflective Memory Node Card
Time:2025-06-26 14:33:26   View count:

The VMICLB-5565 is a Reflective Memory Node Card, originally developed by VMIC (now part of Abaco Systems, formerly GE Intelligent Platforms). It is designed for high-speed, low-latency, and deterministic data sharing across multiple independent systems, particularly in real-time control, simulation, and industrial automation applications.


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English Description


The VMICLB-5565 Reflective Memory Node Card is a crucial component in distributed control and simulation systems where multiple processors or nodes need to share data in real-time without the overhead of traditional network protocols. It achieves this by creating a "reflective memory" network where data written to memory in one node is automatically and transparently replicated to the memory of all other nodes in the network.

Key features and characteristics of the VMICLB-5565 include:

  • Manufacturer: Originally VMIC, then part of GE Intelligent Platforms/GE Fanuc, and now under Abaco Systems.

  • Function: It is a Reflective Memory Node Card. It creates a shared memory space across a network, allowing data to be written by any node and immediately reflected in the memory of all other connected nodes. This "software-transparent" data transfer means no CPU overhead for network communication, ensuring very low latency.

  • Network Type: Utilizes a high-speed fiber-optic network for data transmission.

  • Data Transfer Rate: Achieves high data transfer rates, typically from 43 Mbyte/s (for 4-byte packets) up to 174 Mbyte/s (for 64-byte packets).

  • Dynamic Packet Size: Supports flexible packet sizes ranging from 4 to 64 bytes of data.

  • Memory: Configurable with either 64 MB or 128 MB of onboard SDRAM (some sources indicate up to 256MB for similar 5565 variants). This local SDRAM provides fast read access to stored data.

  • Nodes Capacity: A single reflective memory network can support up to 256 independent nodes.

  • Connectivity Distance: Supports connections with:

    • Multimode fiber up to 300 meters.

    • Single-mode fiber up to 10 kilometers.

  • DMA Channels: Features two independent Direct Memory Access (DMA) channels to optimize data throughput and minimize host processor involvement.

  • Interrupts: Any node in the network can generate an interrupt in any other node or in all network nodes with a single command, which is crucial for real-time synchronization and event handling.

  • Error Detection: Includes error detection and often a redundant transfer mode for enhanced reliability in critical applications.

  • Compatibility: While the "LB" in VMICLB-5565 isn't fully decoded in public datasheets, the 5565 family includes VME, PCI, and PMC form factors (e.g., VME-5565, VMIPCI-5565, VMIPMC-5565), indicating a versatile design. It supports various operating systems like Windows NT/2000, VxWorks, and Linux.

  • Applications: Widely used in:

    • Real-time simulation systems (e.g., hardware-in-the-loop - HIL)

    • Distributed control systems

    • Industrial automation and process control

    • Test and measurement applications

    • Aerospace and defense systems requiring deterministic communication.

The VMICLB-5565 provides a robust and efficient solution for sharing critical data deterministically across multiple computing platforms in demanding real-time environments.


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中文描述


VMICLB-5565 是一款反射内存节点卡,最初由 **VMIC(现为 Abaco Systems 的一部分,前身为 GE Intelligent Platforms)**开发。它专为在实时控制、仿真和工业自动化应用中实现多独立系统之间的高速、低延迟和确定性数据共享而设计。


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主要特点和功能


VMICLB-5565 反射内存节点卡 是分布式控制和仿真系统中的一个关键组件,在这些系统中,多个处理器或节点需要实时共享数据,而无需传统网络协议的开销。它通过创建一个“反射内存”网络来实现这一点,其中写入一个节点内存的数据会自动、透明地复制到网络中所有其他节点的内存中。

VMICLB-5565 的主要特点和功能包括:

  • 制造商: 最初是 VMIC,随后是 GE Intelligent Platforms/GE Fanuc 的一部分,现在属于 Abaco Systems

  • 功能: 它是一个反射内存节点卡。它在网络上创建一个共享内存空间,允许任何节点写入数据,并立即将其反映到网络中所有其他连接节点的内存中。这种“软件透明”的数据传输意味着无需 CPU 开销进行网络通信,从而确保极低的延迟。

  • 网络类型: 采用高速光纤网络进行数据传输。

  • 数据传输速率: 实现高数据传输速率,通常从 43 兆字节/秒(用于 4 字节数据包)到 174 兆字节/秒(用于 64 字节数据包)

  • 动态数据包大小: 支持 4 到 64 字节数据的灵活数据包大小。

  • 内存: 可配置 64 MB 或 128 MB 板载 SDRAM(一些资料表明类似的 5565 变体可达 256MB)。这种本地 SDRAM 提供对存储数据的快速读取访问。

  • 节点容量: 单个反射内存网络最多可支持 256 个独立节点

  • 连接距离: 支持:

    • 多模光纤连接距离达 300 米

    • 单模光纤连接距离达 10 公里

  • DMA 通道: 具有两个独立的直接内存访问 (DMA) 通道,以优化数据吞吐量并最大程度地减少主机处理器参与。

  • 中断: 网络中的任何节点都可以通过单个命令在任何其他节点或所有网络节点中生成中断,这对于实时同步和事件处理至关重要。

  • 错误检测: 包含错误检测功能,通常还具有冗余传输模式,以提高关键应用的可靠性。

  • 兼容性: 尽管 VMICLB-5565 中的“LB”未在公开数据表中完全解码,但 5565 系列包括 VME、PCI 和 PMC 外形(例如 VME-5565、VMIPCI-5565、VMIPMC-5565),表明其设计具有多功能性。它支持各种操作系统,如 Windows NT/2000、VxWorks 和 Linux

  • 应用: 广泛应用于:

    • 实时仿真系统(例如,硬件在环 - HIL)

    • 分布式控制系统

    • 工业自动化和过程控制

    • 测试测量应用

    • 需要确定性通信的航空航天和国防系统

VMICLB-5565 为在要求苛刻的实时环境中,跨多个计算平台确定性地共享关键数据提供了强大而高效的解决方案。