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廈仲岳航計(jì)算機(jī)工程有限公司
 
聯(lián)系人：陳如（銷售工程師）

電話：0592-5085329

手機(jī)：18030132586

傳真：0592-5165561(陳工）

郵箱：[email protected]

qq:1151195663

廈門市思明區(qū)湖濱東路湖光大廈8樓A座

 一般來講，控制系統(tǒng)網(wǎng)絡(luò)可分為3層：信息層、控制層和設(shè)備層(傳感/執(zhí)行層)。傳統(tǒng)的控制系統(tǒng)在信息層大都采用以太網(wǎng)，而在控制層和設(shè)備層一般采用不同的現(xiàn)場總線或其他專用網(wǎng)絡(luò)。目前，以太網(wǎng)已經(jīng)滲透到了控制層和設(shè)備層，很多的PLC和遠(yuǎn)程I/O供應(yīng)商都能提供支持TCP/IP的以太網(wǎng)接口的產(chǎn)品。以太網(wǎng)之所以給自動化市場帶來風(fēng)暴式的革命，主要有3個原因：低成本的刺激和速度的提高；現(xiàn)代企業(yè)對實(shí)時生產(chǎn)信息有越來越多的要求；以太網(wǎng)的開放性和兼容性。
    早期的以太網(wǎng)，多節(jié)點(diǎn)共享同一個傳輸媒體，稱為共享以太網(wǎng)(Shared Ethernet)，節(jié)點(diǎn)間通信采用廣播方式，易發(fā)生沖突。共享以太網(wǎng)用CSMA/CD技術(shù)來避免沖突，即發(fā)送方檢測到?jīng)_突就暫停發(fā)送，隨機(jī)延遲一段時間后再重新發(fā)送直到成功。由于延遲時間是隨機(jī)的，不能事先知道，因而共享以太網(wǎng)的時間響應(yīng)具有不確定性，不能用于強(qiáng)實(shí)時性場合。
    交換以太網(wǎng)(Switched Ethernet)的出現(xiàn)克服了這一缺點(diǎn)，以太網(wǎng)的交換機(jī)(Switch)是數(shù)據(jù)鏈路層(ISO/OSI參考模型第二層)的多端口網(wǎng)橋，也可以說是智能分配器。交換機(jī)將其管理的網(wǎng)絡(luò)以星型拓?fù)浣Y(jié)構(gòu)劃分為許多物理上互相隔離而邏輯上互相聯(lián)系的節(jié)點(diǎn)，每一節(jié)點(diǎn)單獨(dú)與交換機(jī)建立物理連接，在通信的時候交換機(jī)會在發(fā)送端口與接受端口間建立一個獨(dú)占的全雙工通道，它具有以太網(wǎng)的全部帶寬并避免沖突。
Turck RSC 572-6M Bus Stop Cordset

Turck VBRS 4.4-2PKG 3M-0.3/0.3 Eurofast Cord Splitter

Turck RSM RKM 5711-4M Bus Stop DeviceNet Cordset

Banner PKG 6Z-9 Picofast Cordset

Turck VB2-RS 4.4T-0.3/2RK 4T-0.3/0.3 Cordset (Used)

Turck VB2-RS 4.4T-0.3/2RK 4T-0.3/0.3 Cordset

Turck PKW 3M-2/S90 Picofast Cordset

Adept Technology 10332-01367 Camera Interface Cable

Balluff BKS-S49-1-PU-05 Cable Assembly (Pack of 5)

Festo KVI-CP-1-GS-WD-8 Valve Terminal Connector Cable

Festo KVI-CP-2-GS-GD-5 Connecting Cable

Festo KVI-CP-3-WS-WD-5 Connecting Cable

Festo KVI-CP-3-WS-WD-3 Connecting Cable

Turck WKB 4T-6 Microfast Cordset

Balluff BKS-S49-1-PU-05 Cable Assembly

Balluff BKS-S49-1-PU-05 Cable Assembly (Used)

Amprobe LAW82-T Vari-Speed AC Kilowatt/Ampere Recording Module

Allen Bradley 5162978 Potentiometer

Eaton Yale 129349072 Potentiometer

Clark 1830099 Potentiometer

Clark 1830412 Speed Potentiometer

Clark 897210 Diode

Allen Bradley JAIN200P253UA Potentiometer

Turck P-7K-SC-261061-1-MSHA Minifast Cordset

Avtron M4 Incremental Encoder 4T1XH51-P003

Bussmann PDB220-3 Power Distribution Block 600V 175A (Missing Terminal Cover)

Bussmann PDB371-1 Power Distribution Block 600V 310A

Bussmann PDB220-3 Power Distribution Block 600V 175A

Yale Eaton 5162978 Potentiometer

Yale Eaton 5185843-00 Potentiometer

Clarostat VK200W Resistor

Clark 2755253 Potentiometer

833A Battery Charge Indicator

Turck PKG 4M-1-RS 4.4T Cordset

Lucent KS23822-L1 Plug Prong & Modular Amplifier (NIB)

Lucent KS23822-L1 Plug Prong & Modular Amplifier (Used)

AT&T KS23822-L1 Plug Prong & Modular Amplifier

Allen Bradley 836-C4A Pressure Control (Used)

Allen Bradley 1784-CP/B Programming Cable

Digi-Key 200EBK-ND Carbon Film Resistor (Pack of 600)

Warner Electric 201053-42 Capacitor

Merlin Gerin 15303 Italian Standard Socket with Blanking Plate 250V 16A

VanAire Inc. VA12222SS SS Actuator Mounting Kit

Daniel Woodhead Co. 15W47 Watertite Connector 125V 15A

Turck A3054 PG 9 Cable Gland

Toshiba VT130G7U410K Transistor Inverter 100 HP

Allen Bradley 2711-T10C9 PanelView 1000 Touch Screen

Dukane 101F545 Box 14-3/4" L x 5" W x 3-1/4" H

Bodine Electric 494-00029 Motor Capacitor

182231 Rectifier Assembly

The Superior Electric Co. Insulator 600V 250A (Large, Black)

The Superior Electric Co. Insulator 600V 250A (Large, Red)

The Superior Electric Co. Insulator 125/250V 100A (Small, Black)

Chart Pool USA Inc. FXC 808779 Circular Recording Chart (Box of Approx. 100)

Aerovox Z64P3740R21 Capacitor

GE 6X655D Motor Run Capacitor

Sheffield 253-2 Precisionaire Column Instrument (Missing Tube)

Terminal Blocks (Approximately 20 Pieces)

Penta Laboratories 6SN7GT Single Triode

KB Electronics KBWC-36K Solid State Motor Speed Control

Sensor Switch PP-20 Power Pack

R-K Electronics RCS1H-6 Transient Voltage Filter

Lucent MPS100E-262 Cat 5e Jack 108232745

Wiremold CM2-U2KEYA 2A Dual Unloaded Jack Insert Ivory (Box of 10)

Computerwise TT6-00 Trans Term Terminal Keyboard

Mars 685744-12200 CTx370 Universal Capacitor

Mallory Sonalert SC110 Transducer

Red Lion Controls 710 Logic Magnetic Pickup

R-K Electronics RCS1H-36 Transient Voltage Filter

Mallory Sonalert SC110N Transducer

Buss 2838 Actuator

PFA Inc. AST-75-100-CR35 RCC Accommodator

Honeywell 30735489-001 Chart Pen Purple (Pack of 6)

Resistor 120V .015 240V 3/4 1 1/2 (Pack of 16)

Yokogawa B9565AW Folding Chart

Graphic Controls 100-018-N Recording Charts

Weber Marking Systems Printer

R-K Electronics RCS1B-6V Transient Voltage Filter

Corcom 20VB1 EMI Filter

Thermo Electric MiniMite Potentiometer

RTE DIP625C Copper Deadend Plug with Cap without Stud

Cutler-Hammer Eaton C360KA1 Control Circuit Interlock Kit

GE 9L10KAB414 Tranquell High Energy Surge Protector

Bevco SD-300 Full Wave Diode Bridge Recitifier Assembly

Corcom 20VK1 RFI Fliter

Albertronics LTD. 304-0084 SCR Module

Motorola MDA1491-4 Bridge Rectifier Assembly (Box of 2)

Gentex 280-118vA Continuity Tester

Gentex 280-118vA Continuity Tester (Missing Mounting Screws)

GE Security 450222001 MR-JBOX Micro Reader Junction Box

GE Security 450222001 MR-JBOX Micro Reader Junction Box (Missing Tool)

Leviton RDP2U-F06 Distribution and Splice Enclosure

Carlon E971FB Round Non-Metallic Floor Box (NNB)

Leviton 491RU-HFR Versi-Duct Front-Rear Horizontal Cable Manager 1RU

Cooper Crouse-Hinds EDSC271 Single Gang Device Control Assembly Body 3/4"

Allen Tel Products, Inc. 25-3-PP-5-GY 5' Plug-In Connector Cable Patch Cord

AMP 91066-3 Insertion/Extraction Tool

Leviton 49260-MR6 6" Vertical Manager Ring

SR Components, Inc. 606BNC 6' BNC Cable

Homaco CR-93S-4B Cable Ring

Homaco CR-93S-1B Cable Ring

PSION HC 120 NL IND Barcode Data Collector Terminal (Missing Back Cover)

Inductotherm IP147 9116P 0207 74254 Thyristor

ASI DataMyte 93361-019 Cable

Reliance Electric 707226-11J Connector 300V 10A

Semikron SKT1000/20EL2 Thyristor

T7S0146504DN Thyristor

Pass & Seymour L1530-P Turnlok Plug 250V 30A 3PH

Hubbell ONE 2513 Insulgrip Twist-Lock Connector Body 120/280V 20A 3PH 4P (NIB)

Hubbell Twist-Lock Plug 125/250V 20A

Westinghouse INO548IA09A DRI-VAR Capacitor 480V 4 kvar

Slater L21-20-R Twist-Lock Connector Body 120/208V 20A 3PH

Pass & Seymour Turnlok Plug 120/208V 20A 3PH

Festo SIM-M8-3WD-5-PU Right Angle Socket Connector Assembly with Cable

Raymond 1135002 Rectifier (Pack of 2)

Lumberg RST3-RKWT/LEDA4-3-224/2 Male to Female Cable (Pack of 2)

Square D XSZCK111Y Micro-Change Cable 250V 4A 6'

Dayton 2GU12 Motor Run Capacitor 440V

Reliance Electric 707226-11D Connector 300V 10A

IMC 3610NL-04W-B30 Mini Boxer Brushless DC Fan

Detcon, Inc. 971-041170-00L Gas Detection Control System with FP-424C

Turck 57960-00 Eurofast Cordset Extension

0515 0866 PL Thyristor

80-981 Ignition Wire Kit

Honeywell UDC3300 Digital Controller

Square D 9001-BR-104 Explosion Proof Control Station for Hazardous Locations

Square D 9001-BR-204 Explosion Proof Control Station for Hazardous Locations

Square D 9001-BR-103 Explosion Proof Control Station for Hazardous Locations

Lithonia ELBO602N Nickel-Cadmium Rechargeable Battery

Quam QC-10 Wall-Mount Volume Control Attenuator (Broken Stem)

Square D PFCD4030F Power Factor Correction Capacitor 480V 3PH 30KVAR

Square D PFCD4005F Power Factor Correction Capacitor 480V 3PH 5KVAR

Intermatic PG100-208-3Y PanelGuard Surge Protection Device 120/208V 3PH

Advanced Protection Technologies TE05XAS15E1D Surge Protect Device

Sprague EE-1072 Capacitor 3V (Box of 5)

Square D PFCD4007 Power Factor Correction Capacitor

Square D PFCD4007 Power Factor Correction Capacitor NIB

Acuity Brands Controls SPAK 8S 120/277 Lighting Panel

Current Technology  ISB 125-120/208-3GY Surge Suppressor TG125

Warren Emhart 31518 Cable Assembly

Pioneer 36 Photo-Tach

Simpson 00509 Probe

Simpson 0161 Probe

Reliance 836.57.00 Tester Brake Module