GE VMIVME-7452
GE VMIVME-7452 - Image 2

GE VMIVME-7452

Product Overview: The GE VMIVME-7452 is a mass storage module designed for VMEbus systems. It provides essential data logging, program storage, and system boot capabilities by integrating a 3.5-inch floppy disk drive and an IDE hard disk interface into a single 6U VME card.

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Category: SKU: GE VMIVME-7452

Description

GE VMIVME-7452 Technical Specifications:

  • Storage Interfaces: Integrated IDE controller and 3.5-inch floppy disk controller.
  • Floppy Drive: Supports standard 1.44 MB 3.5-inch floppy disks.
  • Hard Disk: Supports IDE/ATA hard drives for high-capacity storage.
  • Bus Interface: Connects to the VME P2 connector for IDE and floppy signals.
  • Form Factor: Standard 6U VME single-slot module.

Functional Features:

  • Dual Storage Medium: Combines removable floppy media for easy data transfer with fixed hard disk storage for high-capacity logging.
  • Boot Capability: Allows the VME system to boot an operating system (e.g., VxWorks, QNX, or DOS) directly from the attached storage.
  • Signal Conversion: Includes an accessory module (VMIACC-0562) to route P2 IDE/Floppy signals to standard 40-pin and 34-pin headers for rear-panel access.
  • DMA Support: Supports Direct Memory Access for high-speed data transfers without CPU intervention.

Application Scenarios:

  • System boot and OS storage for embedded controllers.
  • High-speed data logging for industrial process monitoring.
  • Maintenance and diagnostic data backup.
  • Legacy system support requiring floppy disk compatibility.

Performance Parameters:

  • Transfer Rate: Ultra DMA/100 support for hard drives, maximizing data throughput.
  • Seek Time: Fast mechanical seek times for the floppy drive to minimize I/O latency.
  • Compatibility: Fully compatible with GE Fanuc embedded systems and third-party VME processors.
  • Reliability: Industrial-grade drive mechanisms designed for continuous operation.

Material Composition & Structural Characteristics:

  • Enclosure: Ruggedized metal shielding to protect sensitive magnetic media and electronics from EMI.
  • Connectors: High-density VME P2 backplane connector and front-panel access ports.
  • Internal Cabling: Shielded internal ribbon cables connecting the controller ASIC to the drive mechanisms.
  • Mounting: Heavy-duty mechanical brackets to secure the drives against industrial vibration.

Working Principle: The VMIVME-7452 contains an embedded storage controller ASIC that translates VMEbus read/write commands into standard and floppy controller signals. When the VME CPU accesses a specific memory-mapped address, the ASIC retrieves the requested data blocks from the hard disk or floppy drive and transfers them across the VME bus.

Installation Requirements:

  • Rear Transition Module: Install the VMIACC-0562 RTM to access the IDE and floppy connectors at the rear of the chassis.
  • Drive Configuration: Set the IDE hard drive jumpers to Master or Slave as required by the system configuration.
  • Cable Routing: Route the 40-pin IDE and 34-pin floppy cables away from high-voltage power supplies to prevent data corruption.
  • BIOS Setup: Configure the drive geometry and type using the onboard BIOS setup program.

Usage Precautions:

  • Magnetic Fields: Keep strong magnetic sources away from the module to prevent data loss on the floppy disk.
  • Vibration: Ensure the VME chassis is properly mounted to dampen mechanical shock, which can damage spinning hard drives.
  • Media Handling: Keep floppy disk drives clean; use cleaning disks periodically to maintain read/write head integrity.
  • Power Cycling: Avoid abrupt power loss during write operations to prevent file system corruption.

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