HIOKI 2001 |
HIOKI 2001 |
聯(lián)系人:陳如(銷售工程師)
電話:0592-5085329
手機:18030132586
傳真:0592-5165561(陳工)
郵箱:1151195663@qq.com
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)點共享同一個傳輸媒體,稱為共享以太網(wǎng)(Shared Ethernet),節(jié)點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,不能用于強實時性場合。
交換以太網(wǎng)(Switched Ethernet)的出現(xiàn)克服了這一缺點,以太網(wǎng)的交換機(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。交換機將其管理的網(wǎng)絡(luò)以星型拓撲結(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,每一節(jié)點單獨與交換機建立物理連接,在通信的時候交換機會在發(fā)送端口與接受端口間建立一個獨占的全雙工通道,它具有以太網(wǎng)的全部帶寬并避免沖突。
Dukane 9A2100 Presence Station
Empro HA-25-50 Shunt 50MV 25A
Columbus McKinnon 726124 Manual Powered Trolley I-Beam Mount Hoist 5 Ton
STI STI-9620 Motion Detector Damage Stopper
Bogen Communications, Inc. S86T725PG8WBRVK Speaker and Grille Assembly
Honeywell 14004770-001 Kit
Westinghouse 128A023H01 Insulator
Allen Tel Products, Inc. AT30-2-09 Face Plate (Box of 25)
Polar-Pak Refridgeration Unit
HTH-S3W Outdoor Camera Housing
Bearings, Inc. 01042 O-Pack (Pack of 38)
A109550 O-Pack O-Ring (Pack of 3)
050099-00 O-Pack O-Ring (Pack of 4)
F109S51 O-Pack O-Ring (Pack of 5)
F109550 O-Pack O-Ring (Pack of 2)
58898
Danaher Controls Dynapar H560240164302 W/O Cap
American Packing & Gasket Co. H 2.5X14 O-Rings 12-Pack
WKM ACF 105 Sealant Box of 24
American Packing & Gasket Co. H 3X96 O-Rings 11-Pack
American Packing & Gasket Co. H 3X80 O-Rings 9-Pack
Hyster 1197589 Packing
Hyster 148296 Kit
Hyster 63110 A Packing
Hyster 1195491
Hyster 1196938 Packing
Hyster 57825
Hyster 1198434 Seal
Hyster 118361 ORDNG
Towmotor 1 037805 Ring
Hyster 1197589 BUNAN.-W
Hyster 12353G Repair Kit
Hyster 200938 PKG
Hyster 57079 Viper Ring
Bearings, Inc. 01331 O-Rings
Hyster 1198401 U-CUP
Spring 458-005-180
B.E.I. Equipment 505259-00 U-Cup
NuTone 393 Discharge Wall Cap
Telecor, Inc. 2433-A Guard for 2430-S Digital Clock
W-K-M 248516 DynaSeal 310 Ball Valve Seal Kit
Miller Fluid Power 090-ES009-600 O-Ring Seal
ElectroCraft T.P. CONT B-1 INS 1PH
Atlas Sound AP-15TUC Surface Mount Emergency Signal Loudspeaker 15W (Box of 6)
Atech Swedot 1920 Label Printer
In-Sink-Erator CC101H Disposer Control Center Black
Square D DSFLB The Subway Faceplate Insert
Square D DSFHB The Subway Faceplate Insert
Eaton Yale Timberjack
Square D TVS1EMA12S Transient Voltage Surge Suppressor
Atlas Sound C12BT60 12" 2-Way Dome Coaxial Speaker
B.E.I. Equipment 45647 O-Ring
B.E.I. Equipment 0128270-00 O-Ring
Loctite 60905 Retaining Compound
Hitachi VK-M24 Solid State Video Camera
Airflex 73X340 O-Ring (Pack of 6)
Solder Seal W-369 Aquaseal Washer box of 4
phd 8621-01-3001 Pneumatic Air Gripper
EG&G Sealol 24439
The Sheffer Corp. 760 01 0250 0137 Packing Kit
Schrader Bellows 190718001 1" Rod Seal Kit
Schrader Bellows 190808003 Cylinder Seal Kit
The Sheffer Corp. 760 01 0325 0137 Packing Kit
The Sheffer Corp. 760 01 0200 0100 Packing Kit
Schrader Bellows A63212507 Piston Seal Kit
Chemtrol 29008009 Viton O-Ring Repair Kit
Bearings, Inc. 03331 O-Rings (Pack of 3)
B.E.I. Equipment 1H5728 O-Ring
Hyster 55014 Packing Set
Hyster 232362 Packing
Hyster 61 57982 Packing
Hyster 202780 Ring
Chemtrol 29008016 Viton O-Ring Repair Kit
70HH3253-21 Long Latch Ejectors
Underwriters Labs Inc. E-9725 Cut Out Box with Microswitch
EFD A492 Connector 2 Disp. to 1 Switch Used
Ingersoll-Dresser 24263 Gasket (Pack of 2)
LPM 009 93497 Ball Stud
SMC AXT100-1-FS25 Housing Assembly
LPM 000 462-1857 BRG-STG U
SMC 1305104-4A Ring Cover Assembly
Amphenol C146 10B010 102 4
Fixed Caster 8"
Albion A16NG08201S Swivel Caster 8" Box of 4 Casters
EFD 5125-1-B Precision Tips Red Box of 45
Electronic Silicone Gun
Kodak Multi-Channel Data
Bassick 5" Diameter Swivel Caster
C.A. Norgren Co. 10-004-018 Lubricator
H311X50mm Adapter Sleeve
AN26 SLI Adapter Sleeve S-26-4 1/2
B-LOC Corp. B800 25 x 34mm Locking Assembly
SFK 36177 Oil Seal
Viking 589A Fire Sprinkler Head
Allis-Chalmers ONE 4875744 DD
Caterpillar 6Y4306 Forklift Brake Shoe Assembly
Johnson Controls N-6810-1 E.P. Transducer (NIB)
Worthington Controls Co. 2705 : 0-30 PSI
Braided Steel Flex Hose 12 1/8" Length Used
PACS 077-218 Meter 0-3500AC Kilowatts
PACS 077-080 Meter 0-5250AC Volts
Grainger 1M850-2 Forklift Dome Mirror
EZM Italy EZMCOD15I4U4M 12/35 VDC
T&B 57696 Housing Base with 57696 600V
Barber-Colman Co. AV-400 Valve
Omega Engineering CT485-PS Red and Blue disposable pens
GE 3S7505SL510A6 Microminiature Light Source
Bansbach Easylift A1A1-40-150-386/600N Gas Spring
CR Services 12384 Oil Seal
Lube Device Inc. RDF 101-11 Lubricator
Metal Brake retracted 6" with rubber foot 7" extended
National Ceramic Company Overflow 40H
Milwaukee QB1200.0W0017.5 Resistor
Cooper S21-SP Black Angle Plug 4 Wire 30/50 Amp Ground
Fusion Engineering Paashe Applicator Airbrush
EFD 7610BP 1/8 NPTM x 3/8 Comp. Black Poly
EFD 2134 Fitting 1/4 FPT x 1/4 MPT Elbow Brass
EFD 72542 Fitting 1/4 FPT x 1/4 MPT Elbow Nylon
EFD 2275BP 1/4 MPT x 3/8 Comp. Black Poly
EFD 7613 PP "Y" Fitting for 1/8" ID Tube
EFD 7543BP 1/8 MPT - 1/4 Comp. Elbow Black PP
EFD 2269BP 1/4 MPT x 1/4 Comp, Black Poly
EFD A492 Connector 2 Display to 1 Switch
EFD Valvemate 7000 Air Controller Glue Dispenser 70PSI
EFD Valvemate 7000 Air Controller Glue Disp 70 PSI
Red Lion VCMC0000 Conversion Module 60-160 Volt
Allen Bradley 150-N84L Smart Motor Protective Module
Austin Co. 14,12,8 Enclosure with Backplate NEMA 12,13
Genteq 27L6017S Capacitor 10 uf 660 Volt 50/60 Hz
Teraoka Digi DI-80 Weight Indicator comes with scale and Platform
Parker PR252H0001 2 1/2" Bunan Nitrile Piston Ring Kit
Sprague Powerlitic 36DX DC Capacitor