Product Details

The XYCOM XVME-955 is a discontinued 6U double-height VMEbus storage subsystem module, designed as dedicated storage expansion for XYCOM PC/AT compatible VME single board computers, including XVME-675, XVME-678, XVME-688 and other matching CPU boards in the series. It integrates both 3.5-inch IDE hard disk bay and 1.44MB 3.5-inch floppy disk drive, adopting standard PC/AT IDE controller architecture, which can be directly recognized by DOS and early real-time operating systems without extra complex driver development.

This storage module occupies two adjacent VME slots and connects with the host SBC through dedicated P2 backplane signal routing, realizing transparent disk read and write access for the VME CPU. It supports different IDE hard disk capacity options according to the configuration version, and the front panel is reserved with floppy disk access window and activity indicator LED. The internal power circuit supplies stable power to the hard disk and floppy drive, and the board carries power filtering and surge suppression components to reduce noise interference from the industrial rack environment. It is only used for matched XYCOM PC/AT VME CPU modules and cannot work independently without a compatible host processor.

Users need to confirm the host CPU model, backplane wiring definition and disk jumper setting before installation to avoid IDE device conflict. The front panel status LEDs display power supply and disk read/write activity, helping maintenance personnel judge storage working state during commissioning and routine inspection. The PCB and mechanical structure adopt industrial-grade vibration-resistant design, suitable for continuous operation in power plants, chemical facilities, aerospace test benches and automated test equipment. This legacy storage subsystem is mainly supplied as spare replacement parts for existing XYCOM VME automation racks. Users need to confirm the disk media health condition and firmware compatibility before deployment. A conformal coated version is optional for high humidity, dusty and corrosive industrial sites. This model is widely used for system boot, program storage and historical data recording in old PC-based VME control system retrofit projects.

This floppy and hard disk storage subsystem module adopts standard 6U double-height VME rack mount structure. It draws power from the VME backplane. LED indicators display power status and disk activity for convenient on-site inspection. The operating temperature range is 0°C to 65°C, storage temperature ranges from -40°C to +85°C, relative humidity 5% to 95% non-condensing. It complies with industrial shock, vibration and EMC standards and has CE certifications. It supports disk jumper configuration backup for fast recovery after hardware replacement.

This XYCOM XVME-955 storage module is widely applied in legacy VME control racks and industrial automation upgrade projects. It provides IDE hard disk and floppy disk storage media for the matched PC/AT VME single board computer to realize system boot and data storage. As a reliable discontinued spare part, the XYCOM XVME-955 retains original VME bus timing and disk controller compatibility, and effectively reduces the renovation cost of legacy industrial control system maintenance.