6ES7416-2XK04-0AB0西門子 6ES7416-2XK04-0AB0西門子 

PLC的三種編程語言的特點介紹 
1．梯形圖編程語言
梯形圖沿襲了繼電器控制電路的形式，它是在電器控制系統(tǒng)中常用的繼電器、接觸器邏輯控制基礎上簡化了符號演變來的，形象、直觀、實用。
梯形圖的設計應注意以下三點：
（一）梯形圖按從左到右、從上到下的順序排列。每一邏輯行起始于左母線，然后是觸點的串、并聯(lián)接，zui后是線圈與右母線相聯(lián)。
（二）梯形圖中每個梯級流過的不是物理電流，而是“概念電流"，從左流向右，其兩端沒有電源。這個“概念電流"只是形象地描述用戶程序執(zhí)行中應滿足線圈接通的條件。
（三）輸入繼電器用于接收外部輸入信號，而不能由PLC內部其它繼電器的觸點來驅動。因此，梯形圖中只出現(xiàn)輸入繼電器的觸點，而不出現(xiàn)其線圈。輸出繼電器輸出程序執(zhí)行結果給外部輸出設備，
當梯形圖中的輸出繼電器線圈得電時，就有信號輸出，但不是直接驅動輸出設備，而要通過輸出接口的繼電器、晶體管或晶閘管才能實現(xiàn)。輸出繼電器的觸點可供內部編程使用。

鄭娟萍

廈門仲鑫航自動化設備有限公司

2．語句表編程語言
指令語句表示一種與計算機匯編語言相類似的助記符編程方式，但比匯編語言易懂易學。一條指令語句是由步序、指令語和作用器件編號三部分組成。
3．控制系統(tǒng)流程圖編程圖
控制系統(tǒng)流程圖是一種較新的編程方法。它是用像控制系統(tǒng)流程圖一樣的功能圖表達一個控制過程，目前電工協(xié)會(IEC)正在實施發(fā)展這種新式的編程標準。

MKS Nor Cal 6 in. Flex Bellows Section NW-80 Thin Wall (Wall Thickness N/A)

MKS Nor Cal 5inch Flex Bellows Section NW-80 Thin Wall (Wall Thickness N/A)

MKS Nor Cal 5 inch Flex Bellows Section NW-80 Medium Wall (Wall Thickness N/A)

MKS Nor Cal 4.25 in. Flex Bellows Section NW-80 Thick wall (Wall Thickness N/A)

MKS Nor Cal 12" Straight Section ISO-KF NW-40 Flange w/ ? inch welded tube end

MKS No Hinge NW50 w/Centering Ring Overpressure Fittings Assembly Size NW-50

MKS Mass Flow Controller 1559A-100V-RV N2 100 SLM

MKS ISO-KF NW-50 5.9 inch Straight Section Stub Welded to 10 ? inch OD Stainless

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MKS Instruments 153D-26356 3 inch Throttle Valve

MKS Instruments 122AA-00100DB-SPCAL Pressure Transducer

MKS Instruments 122AA-00100DB Pressure Transducer

MKS Instruments 122A-11061 Pressure Transducer

MKS Half ISO-MF Conical reducer NW-100 to 3.0 inch OD 3.87 length

MKS Flexible Bellows ISO-MF NW-100, 5.9 inch, SS, 100763510

MKS DSSAD100 Mass Flow Controller Gas N2 Flow 2000

MKS Centering Ring KF-50 Overpressure Fittings, ISO-KF Size NW-50 O-Ring

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MKS Baratron? 221AA-00010A Differential Capacitance Manometer

MKS Baratron Pressure Transducer 622A-13742

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MKS Baratron 222BA-00010AA

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MKS 90° Elbow ISO-KF NW-40 100314505 304 Stainless Steel Thin Wal

MKS 90° Elbow ISO-KF NW-40 100314505 304 Stainless Steel Thick Wal

MKS 649A-2567 Mass Flow Controller GAS NH3 500SCCM

MKS 649A-25465 Mass Flow Controller Gas 500 SCCM

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MKS 153D-20-40-2 Control Valve

MKS 1476A13VR1AM Mass Flow Controller Gas N2 10000 SCCM

MKS 1476A12CR1AM Mass Flow Controller GAS N2 100SCCM

MKS 012789928 Mass Flow Controller

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Minimus Vibratory Feeder VGW powers up

Milwaukee Valve Company 1/2" 30SS1F-02

Milwaukee Valve Company 1 ? inch, BA-475B, NPT Brass Ball Trim Valve

Milwaukee Valve Company 1 ? inch BA-450 A 112 FNPT, Brass BAll Valve 3RCK1

Milwaukee Valve Company 1 ? inch, FNPT 23C BA-400NSF 1JBA9, Brass Ball Valve

Milwaukee Valve Company 1 inch Solder, 23C BA-450NSF 100 Brass Ball Valve 3RCJ8

Millipore WGGB06WR1 ? Gasket, VCR 600 PSI Max Pressure

Millipore WG2F06WR1 ? Gasket, VCR 600 PSI Max Pressure

Millipore WG2F02RR2 Waferguard Inline Gas Filter ?  Male VCR Connection Ports

Millipore Pressure Gauge 01-0122-F ? in. Female VCR Fitting Back mount 0-160 psi

Millipore Pressure Gauge 0-100 psi 01-0111-E.

Millipore In-Line Gas Filter WG2F01HR1, C4EM6322

Millipore FC-2900V Mass Flow Controller GAS N2 Flow/Range 400 SCCM

Millipore FC-2900V Mass Flow Controller CF4 100SCCM

Millipore FC-2900M Mass Flow Controller Gas HBR 100 SCC

Millipore FC-2900M Mass Flow Controller GAS CL2 Flow/Range 500 SCCM

Millipore FC-2900M Mass Flow Controller GAS CL2 Flow/Range 200 SCCM

Millipore FC-2900M Mass Flow Controller GAS CL2 Flow/Range 100 SCCM

Millipore FC-2900M Mass Flow Controller BCL3 50 SCCM

Millipore Air Pressure Regulator 01-0111-E Male VCR Fittings Back mount

Microvision MVT-1060 Microscope Loader

Microvision MVT-1060 Microscope Loader

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Micro Memory Inc. MM-6200 Rev. K

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MegaTest PWA 112067 PWB 112068  Mega Test  TG Board

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Mega Kinetics Leak Sensor RS-1000FAP

Med Star Vacuum Adapters ? inch Male NPT Quick Connect

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Matheson Pressure Gauges 63-3133

Matheson High-Purity Brass Line Regulator 3421

Matheson High Purity Gas Regulator 19-540

Matheson Dual Stage Regulator 19-580

Matheson 3320 Single Stage Non-Corrosive Regulator

Matheson 3320 0-3000/100 PSI

Matco-Norca Inc. Brass Plumbing Gate Valve, Solder Ends, ? inch 514C04

Master Pneumatic-Detroit INC R56S-2HV Miniature SS General Purpose  Regulator

Master Pneumatic Miniature Integral Filter/Regulator, ?" 1/8" ports

Manufactured Varies Mitered 90 Degrees Elbow NW-80 ISO-MF Vacuum w/ mount

Manufacture Varies S-Type 90o Elbow 1" Vacuum Fitting w/ NW-25 Flange Size

Manufacture Varies Hinge Clamp KF-50 Vacuum Fittings, ISO-KF Flange Size NW-50

Manual Gate Valve Helium Leak Tested HTE

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Mace Teflon Servo Drive ?" Female 967-1421-1

Mace 2-Way Teflon Regulator Valve ?" Male 990-2424-112

MAC VALVES INC 55B-12-RA NSFP 55B12RA SOLENOID VALVE

MAC 130B-111AAAA and 56C-33-111AA Pilot Valve

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Logical Prompro-8 Eprom/EEprom Programming unit

Logical Prompro 7 Eprom/EEprom Programming unit

Logical Device, Inc. HC705 Device Programming Adaptor

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Lintec MC-2101MCLG Mass Flow Controller HBR 100SCCM

Lintec MC-2101MC Mass Flow Controller SF6 300SCCM

Lintec MC-1101MC Mass Flow Controller HE 100SCCM

Linde Union Carbide Flow Meter FM43506 F5

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Leybold Flange Right Angle Vacuum Bellows Valve

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Lambda Physik Spare Laser Parts Transformers 881309, 891101/1

Lambda Physik Scan Control FL512 w/ KOHLSTAEDT Keypad DEZ90 Laser Parts LPD 3000

Lambda Physik Optics Train Pulse Dye Laser LPD3000, LPD 3002

Lambda Physik Optics Train Pulse Dye Laser FL3002, Parts for LPD3000

Lambda Physik LPD 3000 Steuer-Rack Motherboard II 89060.209, 22049405, 221431159

Lambda Physik LPD 3000 Stepping Motor Control output 8509230, Ultron US100B

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Lambda Physik Coherent Mirror Lens Spare Laser Parts

Lambda Alpha 1500W H07019 Power Supply

LAM RESEARCH FILTER FAN UNIT FOR DV-SYSTEM

LAM Research Drive Assy. 852-210011-004-5-DFT Heater

LAM Research Drive Assy. 852-011050-101-3-2315  Heater

Lam Research believed to be a Heating or Cooling Chuck

Lam Research 853-009000-003-L

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