6ES7953-8LM20-0AA0

6ES7953-8LM20-0AA0 数控装置是数控机床控制的中枢，如前所述，数控装置紧随电子技术、计算机技术、信息技术的发展而演变进化，其发展过程可分为7代(图6)，第1、2、3代是分别采用电子管分立元件、晶体管、集成电路的数控装置，处于数控装置发展初期，体积和功耗大，可靠性低，实用性差。第4代为采用小型电子数字计算机的CNC装置，相对于前几代，其硬件平台结构紧凑、可靠性大大提高，数控技术进入到计算机数控的新轨道，从而使数控机床真正地进入到实用阶段并加快了迭代和发展，此即为数控机床发展的第1个拐点，直接数控(DNC)、柔性制造系统(FMS)等概念和系统相继出现。随着超大规模集成电路微型中央处理器技术成熟，第5代数控装置将基于微处理器的硬件或单板机用作其硬件平台，进一步减小了硬件体积，降低了成本，但其硬件结构的兼容性和开放性较差。20世纪80年代，第6代数控装置中采用了个人微型计算机(PC)，带来了数控机床发展的第2个拐点。借用PC成熟的软/硬件平台、丰富的应用资源和通用的网络化接口等特点，数控装置的研究开发转向以软件算法实现各种功能，即进入到开放式、网络化和软件化数控阶段。随着工业 4.0发展，融合智能传感、物联网/工业互联网、大数据、云计算、人工智能、数字孪生和赛博物理系统的第7代智能数控装置及智能机床正在向我们走来，这将给数控技术发展带来一个新拐点，甚至可能带来一次新的革命。

6ES7953-8LM20-0AA0 

NetApp R200 Server NVRAM4 Card 256MB PCI-X 111-00023+C0

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NETAPP STORAGE SHELF DS14 MK2 - AT 14X 320GB DS14MK2

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NetApp X1025D 106-00014 Optical Gigabit Ethernet Card

NetApp X2050A Dual Port Optical FC-AL Controller (LC)

Used - NetApp X266B-R5 320GB SATA Disk for DS14 MK2 AT

NETAPP STORAGE SHELF DS14 MK2 - AT 14X 250GB DS14MK2

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NetApp F740 Filer System Array With Cabinet VRIS38S

NetApp FAS3050 4TB Filer System 2x DS14 MK2 w/14x 144GB

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NetApp DSX-7.0TB Shelf 14x 500GB, DS14Mk2-AT X267A

NetApp 112-00028 A0 Cable 739391101 Molex Copper .5M

Network Appliance NetApp F880 Filer Head

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NetApp F760 Cluster (F760c) w/ (2) FC9 7 x 36GB

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Netapp X279a 300GB 15K RPM FC HDD DS14 MK4

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NetApp DS14MK2-AT 7TB w 14 X267A 500GB 7.2K SATA HD REF

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NEW HITACHI 73GB FC DRIVE NETAPP X235 DS14 WITH TRAY

NetApp Filer Shelf DS14 MK2 ESN2 FC Modules 144GB NEW!!

NetApp FAS980 Network Storage Filer Head 2x 2.7Ghz/6GB

NetApp DS14MK2 2TB Shelf w/ 14x 144GB FC 10k HDs

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NetApp X268A-R5 750G SATA Drive DS14MK2-AT 108-00149

NetApp F810 Filer Head Unit W/ DS14 MK2 Drive Shelf

NETAPP STORAGE SHELF DS14 MK2 - AT ENCLOSURE DS14MK2

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NetApp F840 w/ (14) 144GB 2TB Network Appliance NetApps

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Network Appliance Filer NetApp FAS250

NetApp X267A-R5 500G SATA Drive DS14MK2-AT 108-00088

NETWORK APPLIANCE NETAPP DS14MK2 AT, 14 X 750GB(X268A)

Dual PS, Dual AT FCX

NetApp DS14MK2 14x 144GB 10K ESH2 Drive Array X274

NetApp DS14MK2 4.2TB Shelf w/ 14x 300GB FC 10k HDs REF

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NetApp F740 w/ (14) 36GB Drives .5TB Network Appliance

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NetApp DS14MK2-AT 4.5TB w/ 14 X266B 320GB 7.2K SATA HD

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NetApp F720 w/ (14) 36GB Drives .5TB Network Appliance

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NetApp X6539-R6 SFP Optical 4.25Gb R6 / New in Box

NetApp F880 NAS Storage Filer Head w/Dual P3 866MHZ/3GB

NetApp F760 w/ (1) FC9 7 x 36GB

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NetApp DS14 MK2 Shelf w/ (14) 144GB 10K HDD

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Network Appliance NetApp FAS960C Filer w/ cards (2)

NetApp DS14MK2-AT 3.5TB w/ 14 X262B 250GB 7.2K SATA HD

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NetApp 7FC Disk Storage Shelf Array Chassis/Enclosure

Network Appliance NetApp SP-6401B FC9 VEM 106-01829

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NETAPP X5612A 106-00101 AT-FCX Module DS14MK2AT FC

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NetApp DS14MK4 2TB w/ 14x 144GB FC 15k X278A HDs

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Network Appliance NETAPP DS14MK4,14 X 300GB (x279a) 15K

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NetApp FAS980c SAS Filer Header

Network Appliance NetApp FAS960C Filer w/ cards (3)

NetApp X234A 10k 36GB HDD for DS14 MK2 SP-234

6ES7953-8LM20-0AA0