DIO216 DIO216DIO216

廈門岳航計算機工程有限公司

 
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。
Armstrong 7/64" Mech Less Bkt 

Armstrong 3/16" Mech Less Bkt

Armstrong 5/32" Mech Less Bkt

Armstrong Pressure Change Assembly 0-15 LBS #213, 813, 983, 313, 413, 883, 863

Armstrong 1/8" Mech Less Bkt

Allen-Bradley 800E-3DL0 Full Voltage Module with Latch Series B

Brady R4410R Portable Thermal Ribbon Red

Moore Wallace Z1093 Wax-CSO Ribbon

KYTronics KYT-2114 Card Dispenser

Acopian 15E10 Power Module A.C. to D.C.

Guardian Electric A420-065453-00 Solenoid

Cognex 371-0389-6 Lens Assy 60mm

CKE S05DA51UC Suppressor

GE CR305X100A Auxiliry Contact 600V

Allen-Bradley 1492-SM5X12 Plastic Markers Series B (Box of 5)

Wiremold 818 External Elbow Ivory (Box of 10)

Wiremold 810A1 NM Entrance End Fitting 

Wiremold 2348-2 Sure-Snap NM 2-Gang Device Box Ivory

International Navistar 1689490C91 Cable 28 1/2" Long

1LTW9C Square Head Plug 1/2" 304 Stainless Steel

Buna 568-234 O-Rings (Bag of 35)

Buna 568-244 O-Rings (Bag of 5)

Chesterton 1725 DF Die Form (1 Set of 4 Rings)

phd 3394-02-1 Seal Kit (NEW)

Meyer 13004 Sector/Shear Pin 3/4"

Electronic Speed Control Petal Assembly

Newman C54414E020 Sanitary Gasket 51mm (Bag of 4)

Baker Material 708858  36V switch

Keller Tools K-297554 Air Tool

Coil 5661D1121 

Coil COO-376-2523

GE H3500GA Power Tech S/F Transient Suppression 120V

Lea International DS-MEP20-277/480-50-34 Surge Suppressor (Knob Not Attached)

Parker Parflex UM4X2.5-ORG-0100 4mm Orange Urethane Tubing (Box of 100 ft)

Cutler-Hammer C383TJ90 90-Pole Jumper Bar (Box of 9)

Rexroth 3 842 532 364 Gelenk Joint

Moritex MML6-110D Coaxial Optical Lens

Harting RJ Industrial 0945 225 1107 Straight Plastic Gender Changer

Clark 4303647 Forklift Brake Shoe Set

Clark 999052 Forklift PMT Unit

Gas Station Pump Identification Placard (Box of 2)

MTI T50064-39 Gas Station Pump Keypad Cover Label

MTI T50064-1131 Gas Station Pump Keypad Cover Label

Parker Parflex UM8X5-BLK-0500 8mm Black Metric Urethane Tubing (Box of  500 ft)

Yale 5106590-01 Packing Kit

Crown 73338 Actuator (Box of 2)

Clark 897024 Spring Set (Box of 8)

Crown 60009-20 Retaining Ring

Cat Eye RR-272-WZ Reflector Orange

Allen Bradley 855P-B10LEM22 Panel Mount Sounder

AT&T 107152100 500A1-003 One Touch Headset Adaptor

CompAir A204-1366 Oil Sample Kit (NIB)

Sun 370-1678-01 Microphone II

Scott-O-Vista 803923-02 Full Facepiece Assembly (Large)

Earmark VAS-2 Loud Mouth Voice Amplification System

North 28-45-40 Headphone

Bilsom 2424-02 Warrior Headphone

Peltor OPTIME 95 Headphone

Remote Control Lot (Approximately 12 Pieces)

Cabot Safety Corp. 1720 Headphone

North 28-45-40 Headphone (Used)

Avaya KS23822-L12 Headset Base Unit

AT&T 106058340 S203A-003 Speakerphone Module

Radiator Specialty Co. G-236 Anchor Bowl Ring

Lucent 108365164 500AM One Touch Headset Adapter

Avaya M12LU/CM Headset Amplifier (For Parts Only)

Avaya KS23822-L12 Headset Base Unit (For Parts Only)

Manning, Maxwell, & Moore K-315-1 Budgit Hoist (2 Ton)

Wright C-RB Roller Bearing Trolley (1 Ton)

Adobe 22001438 Acrobat 5.0

Extron System 10 Plus 10-Input Configurable Switcher with Projector Control

Extron System 8 Plus 8-Input Switcher with Projector Control

MTI T18724-32 Gas Station Pump Keypad Cover Label

MTI T18724-1069 Gas Station Pump Keypad Cover Label

MTI T18724-49 Gas Station Pump Keypad Cover Label

MTI T50064-21 Gas Station Pump Keypad Cover Label

MTI T50064-1041 Gas Station Pump Keypad Cover Label

MTI T18724-82 Gas Station Pump Keypad Cover Label

MTI T18724-32A Gas Station Pump Keypad Cover Label

EU03004G117 Gas Station Pump Keypad Cover Label

MTI T50064-03 Gas Station Pump Keypad Cover Label

MTI T18724-49A Gas Station Pump Keypad Cover Label

MTI T18724-51 Gas Station Pump Keypad Cover Label

MTI T50064-1049 Gas Station Pump Keypad Cover Label

MTI T18724-1096 Gas Station Pump Keypad Cover Label

MTI T18724-70 Gas Station Pump Keypad Cover Label

MTI T50064-70 Gas Station Pump Keypad Cover Label

MTI T18724-1049 Gas Station Pump Keypad Cover Label

MTI T50073-01 Gas Station Pump Keypad Cover Label

MTI T18724-21 Gas Station Pump Keypad Cover Label

MTI T18724-94 Gas Station Pump Keypad Cover Label

MTI T18724-54 Gas Station Pump Keypad Cover Label

MTI T19003-08 Gas Station Pump Keypad Cover Label

MTI T18724-1052 Gas Station Pump Keypad Cover Label

MTI T50064-1009 Gas Station Pump Keypad Cover Label

MTI T18724-73 Gas Station Pump Keypad Cover Label

MTI T18724-53 Gas Station Pump Keypad Cover Label

MTI T50064-53 Gas Station Pump Keypad Cover Label

MTI T50136-17 Gas Station Pump Keypad Cover Label

MTI T18724-17 Gas Station Pump Keypad Cover Label

ENS0301G002 Gas Station Pump Keypad Cover Label

DEC ADV1PPU-87 Gas Station Pump Price Placard 87 Octane

DEC ADV1PPU-89 Gas Station Pump Price Placard 89 Octane

DEC ADV1PPU-88 Gas Station Pump Price Placard 88 Octane

DEC ADV1PPU-DI Gas Station Pump Price Placard Diesel Octane

DEC ADV1PPU-92 Gas Station Pump Price Placard 92 Octane

DEC ADV1PPU-90 Gas Station Pump Price Placard 90 Octane

DEC ADV1PPU-93 Gas Station Pump Price Placard 93 Octane

Gil R60030-G3 Optimum Octane Labels (2) 87, (2) 89, (2) 92 Octane

Pioneer 235076 Stanzoil TRI-PLY Milled Neoprene Gloves (Box of 7 Pairs) 

Hubbell RACO 5A049A Ceiling Box Cover 4" (Box of 28)

Northeast Industries SS301 Pressure Washer

Danco 96750 #36 O-Ring 5/16" OD x 3/16" ID x 1/16" (Pack of 10)

bondo 357 Plastic Spreaders (Pack of 3)

Service First GKT03432 Gasket 0.09 T x 0.50 ID x 3.00 OD

Ingersoll-Rand CPM-10043 Motor Pump Shaft Seal

Base-Lock Rubber Type Co. Inc. F11 Figure Font

ACE Controls, Inc. 1525-400 Complete Seal Kit

Century Spring Corp. 80985 Extension Spring (Pack of 2)

Scott Rotary Seals, Inc. 200-045-25 Lip Seal

22296592 Pneumatic Release

Industrial Face Shield Visor Lot (Approximately 63 Pieces)

Industrial Face Shield Hardware Lot (Approximately 13 Pieces)

Industrial Safety Glasses/Goggles Lot (Approximately 33 Pieces)

Parker PS110 Repair Kit

Hoffman U-707676 Industrial Control Panel Enclosure

Alarm Controls Corp. RP-44 Remote Plate

Dukane 438-761A Auxiliary Input PWB Kit

Dukane 437-00109 Pro Care 6000 Firmware

Ellwood Safety 702 Toe Guard (Set of 2)

Creform YK200U Bolt-On Fixed Caster with 200 x 42mm Polyurethane Wheel

RJS 002-8119 Barcode Verifier

Protectoseal 522 Vertical Drum Safety Vent for 30 & 55 Gallon Drums

Protectoseal 522 Vertical Drum Safety Vent for 30 & 55 Gallon Drums (NIB)

TOA Corp. F-121CM Ceiling Speaker System

Bell-Mark EasyPrint Thermal Transfer Printer 230/115V

Square D 9001-SKYP10 Pendant Control Station

Panasonic PID8 Videolarm Indoor Domed Housing (New, Open Box)

Morse Industrial Products ANSI 60-1 CP Standard Duty Roller Chain 160 Link 10ft.

Pelco CM400 Corner Mount Adapter

Hubbell B2436 Dualevel Cast Iron Adjustable Floor Box

American Time & Signal E45BADD501 Clock

Telex BTR-300 71276-712A Single Channel VHF Wireless Intercom Base Station

Panasonic PID8 Videolarm Indoor Domed Housing