XYCOM XVME-957 (Acromag/Xembedded) VME High-capacity Storage Subsystem

I. Basic Information

Brand Ownership: XYCOM (subsequently acquired and merged into Acromag Xembedded)

Full Model Name: XVME-957, Original Part Number 70957-001 / 70957-003 / 70957-005

Hardware Form: Standard 6U VME single-slot high-capacity storage expansion board, specifically designed for XYCOM PC/AT architecture VME CPU (XVME-674/675/655)

Position: Provides local system disk, programs, and production data storage for VME industrial control chassis; The original product has been discontinued, only refurbished test pieces / a small number of new surplus items are available

Core Storage Hardware Configuration

1. Standard Rotating Media Solution (Mainstream)

2.5-inch IDE mechanical hard drive

Capacity selectable range: 500MB ~ 6GB Industrial-grade IDE HDD

3.5-inch floppy drive: Standard 1.44MB floppy disk drive, used for firmware backup, program copying, and system boot disk creation

2. Solid-state alternative without rotation

Can be replaced with 1.3-inch IDE flash drive (Flash Disk), without mechanical wear, more resistant to vibration, suitable for high-vibration production line environment

3. Signal Transmission

The signals of IDE hard drives and floppy drives are interconnected with the CPU board through VME backplane P2 connector, no external flying wire connection required

VME Bus and Electrical Specifications

VME Bus Mode: VME Slave Slave Station Device, A24/A16 address, D16/D08 data width, fully compatible with IEEE 1014 VME standard

Power Supply: The entire machine takes power from the VME backplane + 5V, ±12V power rails, and has an onboard voltage regulation power module

Mechanical Dimensions: 6U single-height VME standard size (233.35mm × 160mm), standard rack slot card slot installation

Weight: The entire machine weighs approximately 1.36kg (3lbs)

Environmental Reliability Parameters

Standard Industrial Temperature Range: 0℃ ~ +50℃

Reinforced Wide Temperature Model: -40℃ ~ +85℃ Conduction Cooling Version

Mean Time Between Failures (MTBF) > 100,000 hours, PCB with three protection coating

Resistant to workshop dust, mild vibration, industrial electromagnetic interference; CE industrial safety certification

System Compatibility Pairing

Compatible with main control CPU (PC/AT x86 series) XVME-674 (486DX) / XVME-675 (486DX4 100MHz) / XVME-655 (Pentium/MMX)

Complete rack typical configuration

XVME-675 (100MHz 486 controller)

XVME-957 (storage disk + floppy drive)

XVME-500/1 (analog input AI)

XVME-505/1 (analog output AO)

XVME-085 (custom prototype I/O)

Software system compatibility

Perfectly compatible with x86 real-time operating systems such as DOS, Windows 3.1/95, VxWorks, QNX, OS-9; the CPU BIOS can directly recognize IDE storage devices, no additional driver patches required

Six. Industrial application scenarios

Plastic extrusion production line: store temperature-pressure curves, formula parameters, operation logs

Wide-width roll printing machine: multi-axis tension program, printing color parameters, fault history records

Heavy-duty VFFS packaging unit, automated test and measurement XVME rack

Old military, vehicle-based XVME measurement and control system local data archiving and system startup