福建中立恒自动化设备有限公司

一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。

它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。在工业生产的各个领域，机械加工企业为了提高生产效率，采用机械化流水作业的方式，对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代，生产线承担的加工对象也随之改变，这就需要改变控制程序，使生产线的机械设备按新的工艺过程运行，而继电接触器控制器系统是采用固定接线，很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多，随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。

　　发展趋势：1.向高速度、大容量方向发展

　　为了提高PLC的处理能力，要求PLC具有的响应速度和更大的存储容量。目前，有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。

　　在存储容量方面，有的PLC可达几十兆字节。为了扩大存储容量，有的公司已使用了磁泡存储器或硬盘。

　　2.向超大型、超小型两个方向发展

　　当前中小型PLC比较多，为了适应市场的多种需要，今后PLC要向多品种方向发展，特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC，其使用32位微处理器，多CPU并行工作和大容量存储器，功能强。

IBM 54Y2452 vfd lcd display FOR SurePos 500 4852-526 Futaba M202MD15B

IBM 41L6013 pSeries RS/6000 7044-270 I/O Board

PLX TECHNOLOGY PCI6152-CC33PC Lane PCI Bridges PCI to PCI Bridge 32 Bit 33

Phihong POE75D-1UP-R DC input POE Adapter

XP Power PCM120PS24 Power Supply 120w Max Output 24v 5A

Mean Well SP-150-48 Enclosed Power Supply 100-240VAC 2.5Amps

 Orient Display AMC2402AR-B-Y6NFDY 24×2 Character LCD Module

RADIALL R570442000 0-18GHz 12V RF COAXIAL SWITCH

PMC PAS65501C PAS5201 OLT EDK PMC-SIERRA Board

Zyxel Zywall 35 Router Firewall Internet Security Appliance

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Tokyo Model AK-20 Pressure Regulator

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Hkeler 8111.00070 Board DIRECTIVE 2002/95/EC

Cosel LEP240F-48 U AC/DC Power Supply 48V 5A

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MELLANOX MC3309130-0A1 PASSIVE COPPER CANLE ETHERNET 10GBE SFP 1.5M

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 HITACHI POWER SUPPLY ASSEMBLY SX325074-01 DS450-3 FOR BLUEARC MERCURY

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Lenovo 00XG024 Motherboard for S500 Desktop IH81CE

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HP 646246-001 ProBook 4530s Laptop Motherboard CPU i5-2450M SR0CH

Sejin SPR-8695TU US Compact Trackball Mini Keyboard, 86 Key, USB FMK-8695TU US

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SON PF97331B1-B000-F99 DC12V 19.2W Turbo Blower Cooling Fan R-Type

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METRIC 200MM DIGITAL CALIPER

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EMC VX-2S10-600 005049250 600GB 10K 6G 2.5" SAS HDD FOR VNX

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Lenovo 90Y9433 5m SFP Passive Copper Cable 95Y1634

D SMLenovo 90Y9433 5m SFP Passive Copper Cable 95Y1634

CRUCIAL CT32M32P4M6.K16DTG 128MB Simm Non Parity EDO-RAM Memory

Mellanox CX346A MCX346A-BCPN ConnectX-3 Pro Dual Port 40GbE QSFP Network

Tadiran 72449224100 8SKD 8 Port Digital Station Circuit Card

BRIDGE 3600 MAINSTREET POWER TRAY 90-0434-01/J

TEAC FD-235HF C291-U5 Floppy Disk Drive 1.44MB 3.5" Internal 193077C2-91

 Apacer 78.B2GCS.AT00C Memory 4GB PC3-12800 1.35V ECC SO-DIMM

Audio-Technica MB 4k Midnight Blues Microphone

Phoenix Contact MCR-VAC-UI-O-DC 2811103 Voltage Measuring Transducer

ISA DCI-941216 PC COM 2 PORT CARD GRAPHIC CARD

PLANET MGB-TLX 1000BASE-LX 1.25Gbps 1310nm 20km DDM SFP Transceiver

Mellanox CX4221A ConnectX-4 Lx Dual Port 10/25GbE KR NIC Mezzanine Card WCHFY

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Mellanox CX346A MCX346A-FCPN ConnectX-3 Pro FDR IB  40/56GbE Network Card

Nortel NTTP04CF OC-3/12 IR-1/S-1.1_S-4.1 WMOTAJCJAA SFP

Mellanox MHRH2A-XTR REV X3 ConnectX-2 VPI Adapter Card dual-port QSFP 20Gb/10GbE

HP / Hitachi HUS153073VLS300 72GB 15K SAS Hard Drive DF072BABUD 462587-001

IBM / NORTEL 32R1866 32R1869 6 Port Layer 2/3 Gigabit Switch Module BladeCenter

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Cisco UCS 11503-1 1U  2U Lower PDB

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Agilent Designer's Kit ATDK-DK01 Schottky  PIN Diode

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NetApp X302A-R5 45E7973 108-00234A0 1TB 7.2K RPM 3Gb SATA HDD

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HP 580750-001 Rack Mot Server SATA Backplane HDD Slot 12 Bay DL 180 G5

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HighSecLabs SK21H-N 2–Port 4K30 UHD HDMI KVM Switch

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IBM  Lenovo Genuine 44C0725 ThinkPad Laptop SL300 Palm Rest

IBM  Lenovo Genuine 39T5465 39T5243 ThinkPad Laptop T42 System Board

Konica Minolta A161K11000 A161H010 Scanner Board FOR INEO 454E / BIZHUB C454E

EMACS MPW-6150F 150W Switching Power Supply 6MPW-150B028

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NetApp 108-00182A0 X283B-R5 750GB SATA 3.5″ 7.2K RPM HDD Hard Drive

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VARIAN 03.647828 WITH 2X 03.648155

DELL 0453KG AL14SEB060N 453KG 600GB 10K 12G SFF SAS ENT HDD 2.5'' HDEBF03DAA51

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GIGABYTE GA-H97-HD3 LGA 1150 Motherboard Intel H97 DDR3 HDMI USB3.0

Lenovo IBM 03T7150 SATA Board

Lenovo Thinkpad 43N8370 Base Cover for 3000 N500

IBM / Lenovo ThinkCentre MotherBoard 71Y6839 A58 M58e

IBM BladeCenter 4 Port GIGABIT ETHERNET Switch Module 26K6482

LOT OF 13 IBM 22R6442 SHORT WAVE SFP 4GB MULTI-RATE FIBRE CHANNEL

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IBM 14R0107 38R5408 TAILGATE BOARD FOR IBM POS 4840-563

IBM 14R0093 TAILGATE BOARD FOR IBM POS 543

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PANASONIC WV-SF135 HD DOME NETWORK CAMERA

Santek 7" 800x480 ST0700I9WY-RHSLW-F TFT LCD Screen

SPOWER SPS-060-05 5V 12A POWER SUPPLY

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Scopus 15-0400-02011 E-1000 PSU Power Supply

POWERLO GKF-150-48 150W POWER SUPPLY

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DANAHER MOTION P21NSXS-LSS-NS-06 35W 1500RPM 1.8 STEP MOTOR

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KTC KNC-HDi47B IP Network Wide Angle Mot Camera 12V

Fuji Electric EG103CUL EG103CUL60 60A 3P Earth Leakage Cicuit Breaker

EXTRON 4 ROED BOTTEN PANEL

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SMC CQ2BS32-10DC Pneumatic Cylinder 1.0MPa