XYCOM XVME-678 Processor Module

Technical Specifications

Model:XVME-678

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:0.88kg

CPU:Cyrix 486SLC/e,25MHz,on-chip 1KB cache,486SX instruction set compatible

Memory:Max 16MB zero-wait-state interleaved DRAM,configurable 1MB/4MB/10MB/16MB

Optional accessory:80387SX math coprocessor socket

Graphics:VGA controller,max resolution 1024×768,16 colors

Storage:Onboard IDE hard disk controller,floppy disk controller

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

Other onboard interfaces:PS/2 keyboard and mouse interface,speaker interface

VME addressing:A16/A24/A32,D08/D16/D32

Onboard indicator:FAIL,PASS LED;RESET switch

Operating temperature:0℃ ~ +70℃

Storage temperature:-40℃ ~ +85℃

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

Certification:CE,UL

System compatibility

XVME-678 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.

Cyrix 486SLC/e 25MHz processor executes control logic,data acquisition and calculation tasks.

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

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

Integrated IDE and floppy 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-678 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 IDE/floppy 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.

Low power Cyrix 486SLC/e processor with built-in 1KB cache.

Zero-wait-state interleaved DRAM,high-speed memory access.

VGA video output for local HMI without extra adapter.

Optional math coprocessor for complex floating-point calculation.

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,DRAM,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-678 is legacy VMEbus 6U single board computer based on Cyrix 486SLC/e 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.