描述
;海量存儲(chǔ)設(shè)備必須符合海量存儲(chǔ)設(shè)備類規(guī)范,該規(guī)范包括4個(gè)獨(dú)立的子類規(guī)范,本設(shè)計(jì)中用到其中的2個(gè)子類規(guī)范:一是USBMassStorageClassBulk-OnlyTransport規(guī)范[5];二是USBMassStorageClassUFICommand規(guī)范。前者定義了數(shù)據(jù)/命令/狀態(tài)在USB總線上的傳輸方法,Bulk-Only傳輸規(guī)范僅僅使用Bulk端點(diǎn)傳送數(shù)據(jù)/命令/狀態(tài)。后者定義了對(duì)存儲(chǔ)介質(zhì)的操作命令,UFI命令規(guī)范基于SCSI-2和SFF-8070i命令集。這里根據(jù)SCSI-2規(guī)范[6]針對(duì)該類設(shè)備的操作命令規(guī)范,總共編寫了9個(gè)命令執(zhí)行函數(shù),見(jiàn)下文。
海量存儲(chǔ)規(guī)范的實(shí)現(xiàn)有2個(gè)地方要注意:一是設(shè)備描述符、配置描述符、接口描述符和端點(diǎn)描述符要正確設(shè)置,主機(jī)是通過(guò)控制端點(diǎn)(端點(diǎn)0)獲取這一些描述符的;二是BULK端點(diǎn)(端點(diǎn)2)的中斷處理,其中的BULKOUT中斷處理較BULKIN復(fù)雜,由于篇幅所限,下面只討論BULKOUT的中斷處理。
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列
本特利,英維思,伍德沃德,福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè),ACSO,力士樂(lè)等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
CONVUM VACUUM GENERATOR,TYPE CV-20LSCK
Convum MPS-V2R-G Vacuum Sensor
PARKER/CONVUM VACUUM AIR GENERATOR CV-30AHSN
Lot/4 Convum PS-50-F Vacuum Suction Pads
1 NIB CONVUM MPS-V3RC-GHA VACUUM SENSOR MPSV3RCGHA
PARKER CONVUM VACUUM SOLENOID VALVE MC2S10HSZM24B5N
Convum Vacuum Solenoid CVA-15HS
CKD CONVUM 3/8″PORT VACUUM FILTERS VF-6
CKD CONVUM 1/4″PORT VACUUM FILTERS VF-5
Convum PF-50 Vacuum Suction Pad
CONVUM VF-5 VACCUM GENERATOR FILTER CV-15,MCA-10/13
CONVUM FILTER VF-5 MYOTOHU COMPRESSOR FILTER 1/4 NPT
Parker Convum TYS-20B-30 Bulkhead Level Compensator
Myotohu Convum CVA-15QS Vacuum Actuator
CONVUM CVK-15HRZD PRESSURE SOLENOID VALVE CONVUM
Parker Convum CV-25HSN
CONVUM CVA-15HS35GDN NSFP CVA15HS35GDN
CONVUM MYOTOHU CVT05HS
PARKER CONVUM VACUUM SOLENOID VALVE MC2S07HSZM24B5N
CONVUM CV-15HS NSFP CV15HS
Convum Pneumatic Valve Manifold CVK-15HRZD Lot of 2
CONVUM CVA-15OS USPP CVA15OS
CONVUM CVA-15QS USPP CVA15QS
DNS CONVUM SENSOR,DIGITAL 2-AE-J0043 D4M5-GHA-D4
CONVUM CV-10HSCK NSFP CV10HSCK
CONVUM VF-3 VACUUM FILTER 1/8″
Convum APS030-PNP-SA2 Vacuum Sensor
CONVUM VACUUM FILTERS VF-6
CONVUM CV-10LS USPP CV10LS
Convum Manifold Solenoid Valve CVK-15HRZD 24V MVS SMC
CONVUM CVA-10LSB NSPP CVA10LSB
PARKER CONVUM PF-120D VACUUM CUP PAD
PARKER CV15HSN CONVUM VALVE CV-15HSN 1/4 INCH 1/4″
Convum Myotoku CVK-15HRZD 24BD Pneumatic Solenoid(794)
CONVUM PRESSURE DISPLAY SWITCH MPS-71E-G-D5
Convum Parker PFYK-25-U Vacuum Suction Cups
MYOTOKY LDT.CVA-15HSA CONVUM VALVE
Parker Convum CEK27HSZC24PBLN Vacuum Pump Generator
Convum Vacuum Generator Pump CV10HSC
Convum Vacuum Generator Pump CCV10HSCK NEW
2 Convum Parker PFYK-25-SI Vacuum Suction Cups
PARKER generator CONVUM VACUUM PUMP PA244-RV3.5
MYOTOKU/CONVUM CV-10LS GENERATOR 10MM LOW VACUUM
MYOTOKU/CONVUM CV-10LS GENERATOR 10MM LOW VACUUM
CONVUM MVS-030-W NSFP MVS030W
CONVUM SENSOR,VACUUM FOR SPIN SD MPS-R3S5-GHA-D
DNS CONVUM?SENSOR,PRESSURE 2-AE-J0076 P3M5-GHA-D
CONVUM CVK-20HSABC-24B?L USPP CVK20HSABC24BL
DNS CONVUM SENSOR,DIGITAL SPI 2-AE-J0012 R3S5-GHA-D
Myotohu Convum MVS-030 Vacuum Switch
MYOTOKU/CONVUM CVF-1-10LS GENERATOR 1MM
CONVUM MPS-V2R-C NSFP MPSV2RC
CONVUM MPS-P1N-PC NSFP MPSP1NPC
DNS CONVUM PRESSURE SENSOR ASSY 2-AE-J0067 R3S5-GHA-D
CONVUM CYLINDER TKY-0-4.5X3
Convum Vacuum Switch CVA-D,CVA-10,CVA-V3B
Myotoky LTD.Model:CVA-10HR-VDN-24?B Convum Valve
4-Convum Vacuum Technology Valves CVK-15HSZC 24 VDC
MYOTOKU/CONVUM CVF-1-10HRAB/MV?S-030-AB VAC SENSOR
MYOTOKU CONVUM CVR Vacuum Switch
CONVUM CVF-2-05HS VACUUM SWITCH SOLENOID VALVE
CONVUM MPS-V2R-PGA NSPP MPSV2RPGA
Parker MPS Convum PRESSURE Switch P6N-PG(11)
Parker Convum CVX-0260-B-E0S-?DN PA244-RV3.5 Vacuum Pump
MYOTOKU/CONVUM VF-3 VACUUM FILTER
CONVUM MPS-V3RC-G-M VACUUM PRESSURE SENSOR
Parker Convum Vacuum LED Switch MPS-V2N-PC
Parker Convum CVX0260BE0SDNNA Vacume Pump PA244-RV3.5
Parker Convum MPS-R3F5-NC Stainless Pressure Sensor New
Convum CVA-DN/CVA-15HS 24BL/C-0054-CVA
Myotoku Convum F-1 Vacuum Ejector C-21-316
Convum VF-3
Convum CVA-15HR-B Vacuum Release Solenoid Valve NNB
CONVUM A QUICK RELEASE VALVE CVA-D NO.EKT(15-19)
Convum MPS-V9M-NG-YOK Sensor
Convum MC2S07HS-ZM24B5?R-8Y19 Valve w/A00SC23-Z06-028
Convum MVS-030-AB Vacuum Sensor NPN MVS030AB NIB
Parker Convum MVS-030ABP PNP Sensor MVS030ABP NIB
Convum VF-6 Pneumatic Port Vacuum Filter NIB
Convum VF-3 vacuum filter assembly 1/8″w/element














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