XYCOM XVME-688 Processor Module

Technical Specifications

Model:XVME-688

Brand:XYCOM

Product type:VMEbus PC/AT Compatible Single Board Computer Processor Module

Power supply:+5V,+12V,-12V VME backplane power

Bus interface:Standard VMEbus,bus master & slave,support VME interrupt IRQ0~IRQ7

Form factor:6U single-height VME card

Weight:0.89kg

CPU:Intel 80386SX,25MHz

Optional accessory:80387SX math coprocessor socket

Memory:Four SIMM sockets,expandable up to 16MB zero-wait-state interleaved DRAM

Graphics:Super VGA controller,512KB video DRAM,max resolution 1024×768,16 colors

Storage:Floppy disk controller,IDE hard disk interface

Onboard communication:2×RS232 serial port,1×Centronics parallel port

Other onboard interfaces:PS/2 keyboard,PS/2 mouse auxiliary port,shadow RAM for BIOS

VME addressing:A16/A24/A32,D08/D16/D32,real mode access window

Onboard indicator:FAIL,PASS LED;RESET switch,SYSFAIL switch

Operating temperature:0℃ ~ +70℃

Storage temperature:-40℃ ~ +85℃

Relative humidity:5%~95%,non-condensing

Certification:CE,UL

System compatibility

XVME-688 belongs to XYCOM XVME series industrial VME single board computer.

It installs in XYCOM VME chassis and cooperates with XVME series I/O modules.

Compatible with turbine,compressor and legacy DCS control systems via VME bus.

Commonly used for power plant,oil & gas,petrochemical old equipment maintenance and spare replacement.

Function

Act as controller of VME rack,runs legacy DOS/real-time operating system and process control programs.

Intel 80386SX 25MHz processor executes control logic,data acquisition and calculation tasks.

Zero-wait-state interleaved DRAM ensures fast memory access for real-time industrial control.

SVGA graphics supports local display for on-site monitoring and debugging.

Integrated shadow RAM accelerates BIOS loading and system startup.

Integrated floppy and IDE hard disk controller for system firmware and data storage.

Dual RS232 and parallel port for serial peripherals and printer connection.

Optional 80387SX math coprocessor to boost floating-point computation.

Full VME bus master function,access all VME I/O modules on backplane,read sensor data and output control commands.

Support VME bus arbitration,system reset and seven-level VME interrupt management.

Onboard self-test for CPU,memory,graphics,storage,serial circuit,VME bus interface,fault state displayed via FAIL LED.

Installation

Power off VME chassis.

Insert XVME-688 card into empty 6U single-height VME slot,tighten front panel fixing screw.

Set base address,interrupt level and memory configuration via board jumpers.

Connect VGA display,serial terminal or floppy/IDE storage wiring.

Power on chassis,run BIOS and hardware self-test.

The module initializes and communicates with all I/O modules in VME rack.

Interface

VME P1,P2 backplane connector,front panel VGA,serial,parallel port,LED indicators and reset switch.

Feature

6U single slot VME single board computer,XYCOM XVME series.

PC/AT compatible architecture,support legacy industrial operating systems.

Four SIMM memory sockets,max up to 16MB interleaved zero-wait DRAM.

Built-in Super VGA video controller with dedicated video memory.

Shadow RAM design to optimize BIOS execution speed.

Optional 80387SX floating-point coprocessor for complex calculation.

Real mode VME access window,simplify legacy software VME operation.

Full VME bus master capability,support 32-bit VME addressing and data transmission.

Discontinued obsolete VME module,supply only for old production system spare replacement.

Vibration resistant PCB design,suitable for turbine control cabinet.

Diagnostic

FAIL LED on:CPU fault,memory error,graphics/storage failure or VME bus interface damage;

Cannot boot:check backplane contact,SIMM memory,BIOS setting and storage media;

Serial/parallel communication failure:check wiring,baud rate and transceiver circuit;

VME bus access error:check bus arbitration and interrupt jumper configuration.

Product Brief

XYCOM XVME-688 is legacy VMEbus 6U single board computer based on Intel 80386SX 25MHz processor with PC/AT compatible architecture.

It serves as controller for VME rack,widely used as spare part for turbine and compressor control,petrochemical and power plant old DCS renovation.

Disclaimer

All parameters are for reference only and not for quotation basis. Goods are scarce and will be powered on for inspection before shipment. Overseas delivery lead time 3-7 working days. This item is only used for equipment maintenance and retrofit.