描述

PLC的容量包括I／O點數(shù)和用戶存儲容量兩個方面。

(一)I／O點數(shù)的選擇

PLC平均的I／O點的價格還比較高，因此應該合理選用PLC的I／O點的數(shù)量，在滿足控制要求的前提下力爭使用的I／O點最少，但必須留有一定的裕量。

通常I／O點數(shù)是根據(jù)被控對象的輸入、輸出信號的實際需要，再加上10％~15％的裕量來確定。

(二)存儲容量的選擇

用戶程序所需的存儲容量大小不僅與PLC系統(tǒng)的功能有關，而且還與功能實現(xiàn)的方法、程序編寫水平有關。一個有經(jīng)驗的程序員和一個初學者，在完成同一復雜功能時，其程序量可能相差25％之多，所以對于初學者應該在存儲容量估算時多留裕量。

PLC的I／O點數(shù)的多少，在很大程序上反映了PLC系統(tǒng)的功能要求，因此可在I／O點數(shù)確定的基礎上，按下式估算存儲容量后，再加20％~30％的裕量。

存儲容量（字節(jié)）＝開關量I／O點數(shù)×10＋模擬量I／O通道數(shù)×100

另外，在存儲容量選擇的同時，注意對存儲器的類型的選擇。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應用于以下領域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計算機控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列

本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

N69740 B.Braun Biotech 884201/9 Bioreactor w/Dispenser

N69743 The Baker Company SG603-TX SterilchemGARD III

C56823 Dage Microtester 22 10kg Shear Test Load Cell

C70560 Royce MBS200 Wire Bond Pull Tester MBS 200

K70517 HP Agilent E7101-67936 Prober Tester PTI*NIB*

A58949 ESEC SA Wafer Mounter 650.010/6

A58556 Beckman Multimek 96 Automated 96-CH Pipettor

A38873 Tektronix RTD720A Real Time Digitizer w/Display

N59240 Nicolet 5DXC FT-IR Spectrometer

A72207 Lot of Quality Transformers Corp.10kVA,7.5kVA

A72210 Lot of Lithonia Lighting Reflectors,HID Housing

C53689 Tenney 5 Environmental Chamber(m/n T5-2-100350)

C52722 MCT 4600 Chip Carrier IC Handler for 84PLCC

C52721 MCT 4610 Chip Carrier IC Handler for 28PLCC

C52701 MCT 4600 Chip Carrier IC Handler for 52PLCC

N69895 IPM Balanced Power II BP1125-2020

G63881 Forma Scientific 8525 Bio Freezer

G63896 Forma Scientific 8425 Bio Freezer

G63902 Forma Scientific 8325 Bio Freezer

C52694 MCT 3608E IC Handler for 300mil 20pin DIP 3608E3

C52696 MCT 3616E IC Handler(m/n 3616E48P)

C70012 Dage Microtester 22 500gm Shear Test Load Cell

C68808 Davidson Optronics D657-100A Autocollimator

C52790 Dage Microtester BT22 5kg Pull Test Load Cell

C52792 Dage Microtester BT22 200g Pull Test Load Cell

C52791 Dage Microtester BT22 1.5kg Pull Test Load Cell

C67867 Dage BT22-LC02 50gm Pull Test Load Cell for BT22

K72114 Titertek Plus ICN Flow M96V Washer,S20 Stacker

K70248 Equipe Technologies ATM-3108 Wafer Loader Robot

K67967 Inter-Lakes 4436 Press/Splitter Vibration Table

G66211 Labcyte EDR-384SII Multi Dispenser,Automated

Y72289 Elga Purelab Ultra GE MK2 DNA Water Purification

Y72303 Millipore Labscale TFF System Pump Stirrer 29751

K66949 CEE 2100 Cassette to Cassette Hotplate System

AP42588 Parker HPD67 Servo Amplifier CA-112405-R

G40949 Eastey Ent.Shrink Packaging Tunnel ET 1610-48

N67899 Tektronix TCA-1MEG High Buffer Amplifier

G70599 Six Tektronix P6135A 150MHz 10X Probes NIB

C72847 Haskris R050EW WaterCooled Recirculating Chiller

C72848 Haskris R050EA Air-Cooled Recirculating Chiller

C64550 Blue M OV-560A-2 Lab Oven(120V,1Ph,to 400°F)

C71024 Sigma Systems SuprCyclr Environmental Chamber

G72011 Varian ProStar 420 Autosampler

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A69318 Thermo Forma-86C ULT Freezer,Model 8558

G53115 Poly Mold Hydraulic Press&Racine Supervane Pmp

A68353(2)Lindberg Tube Furnaces Type 54357,54357A

A58114 Disco DWT-13R Water Temperature Control Unit

A60985 Kato Laboratory Temperature Oven-70°C~180°C

A69994 Nalorac Z-Spec Pulse Tune Driver,Level 2B

A59232 Sanyo Seiki SR7150-0002C-Z Robotic Arm

A64354 Genetix QPIX Colony Picking System

A64357 Mettler Toledo Myriad Allex Automated Chemistry

C72661 Nunome Electric 90kVA 200VAC 260A Transformer

Y72290 Eppendorf 5417C Bench Top Centrifuge 14K RPM

C70101 Blue M OV-490A-3 Mechanical Convection Oven

C51211 Tektronix TLA 7N4 136Ch LA Module 2GHz/200MHz/1M

C51209 Tektronix TLA7M4 136Ch LA Module 2GHz/100MHz/512

G72042 THK GL15S16+1250L Positioning Linear Stage

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A58604(2)Varian 3700 Gas Chromatograph,Autosampler

N72631 Welch 2025 Self Cleaning Dry Vacuum System

K72111 BioCad Perfusion Chromatography LAB Workstation

N72630 Bio/Data PAP-4 Platelet Aggregation Profiler

A72284 Nanometrics 7200 Film Thickness System,Olympus

C72666 MECS Asyst OF250 Wafer Prealigner&Controller

C53058 Eutectic Heated Work Holder 6″Wafer Hot Chuck

C54375 Hot Chuck Wafer Stage 8.25″w/Digital Controller

A52645 NuAire NU-3700 Dual CO2 Water Jacketed Incubator

C68411 Bradley GPS Positioning Navigation Test Station

AT51338 Daikin Industries UBR3E6 Brine Chilling Unit