描述

（2）系統(tǒng)程序存儲器

它用以存放系統(tǒng)工作程序（監(jiān)控程序）、模塊化應用功能子程序、命令解釋功能子程序的調(diào)用管理程序，以及對應定義（I/0、內(nèi)部繼電器、計時器、計數(shù)器、移位寄存器等存儲系統(tǒng)）參數(shù)等功能。

（3）用戶存儲器

用以存放用戶程序即存放通過編程器輸入的用戶程序。PLC的用戶存儲器通常以字（16位/字）為單位來表示存儲容量。同時，由于前面所說的系統(tǒng)程序直接關系到PLC的性能，不能由用戶直接存取。因而通常PLC產(chǎn)品資料中所指的存儲器型式或存儲方式及容量，是對用戶程序存儲器而言。

常用的用戶存儲方式及容量型式或存儲方式有CM0SRAM，EPR0M和EEPR0M。信息儲存常用盒式磁帶和磁盤。

CM0SRAM存儲器是一種中高密度、低功能、價格便宜的半導體存儲器，可用鋰電池作為備用電源。一旦交流電源停電，用鋰電池來維持供電，可保存RAM內(nèi)停電前的數(shù)據(jù)。鋰電池壽命一般為1―5年左右。

EPR0M存儲器是一種常的只讀存儲器，定入時加高電平，擦除時用紫外線照射。PLC通過寫入器可將RAM區(qū)的用戶程序固化到R0M盒中的EPR0M中去。在PLC機中插入R0M盒，PLC則執(zhí)行R0M盒中用戶程序；反之，不插上R0M盒，PLC則執(zhí)行RAM區(qū)用戶程序。

EEPR0M存儲器是一種可用電改寫的只讀存儲器。

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。

L75905 Applied Bio.Pioneer Cont.Flow Peptide Synth.

G75505 Rorze Robot RR721L202H-H30-?ICA-3&CURR-2292-1

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C51192 Tektronix DTG 5274 Data Timing Generator 2.7Gb/s

C51191 Tektronix DTG 5274 Data Timing Generator 2.7Gb/s

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C70443 Mech-El 703 Manual Eutectic Die Attach Bonder

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AE43755 RECIF SA Wafer Scribe Reader IDLW8 System

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A66346 Piller Apostar AS50 UPS System 50 kVA,480V 85A

A73256 Applied Materials 0010-40099 RF Generator 10kV

A75233 Wentworth Labs 6”Prober w/Unitron ZSB Scope

A73776 Gyros Gyrolab xP Workstation

A73488 Douglas Instruments Oryx 6 w/XYZV Plateholder

C69602 Logitech 2125 Polishing/Bonding Jig

A58951 K&S 6491 Semi-Automatic Die Bonder

C54973 Agilent 16950A 600MHz State/4GHz Timing/4Meg Mem

C54587 Agilent 16950A 600MHz State/4GHz Timing 4Meg Mem

A73483 US Motors Titan Vertical Motor 250 HP,Emerson

A73480 Thermo Jarrell Ash Iris 1000 Spectrometer System

C51193 Agilent E4406A Transmitter Tester w/202 300 BAF

C52517 Agilent E4406A Transmitter Tester w/202 300 BAH

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C75091 Eppendorf 5804 R Refrigerated Centrifige 5804R

C51195 HP E4406A VSA Transmitter Tester w/BAH,204,UK6

C51194 Agilent E4406A Transmitter Tester w/Opt 202 BAH

G75520 Nikon Diaphot 200 Microscope w/Nikon Optics

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A71514 Leitz Wetzlar Trinocular Microscope w/Stage

C51174 HP E4406A Transmitter Tester 7MHz-4GHz w/Opt BAH

C75758 Nikon Labophot-2 Trinocular Teaching Microscope

L67921 Hughes Wire Bonder System WD-8700D1

A63423 Bemco Inc.FC-77 Cart Environmental Pump System

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A58956 3S 8013 Pick&Place Inspection Wafer Station

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C73122 Isel Wafer Handling Robot w/built-in Controller

K73702 Spectra-Physics T20-8S40 Diode Laser System

G75111 Nikon Diaphot Microscope w/Lenses&Eyepieces

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A75225 Labconco Delta Series Class II Biosafety Hood

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A72127 Waters 600 Multisolvent Delivery System HPLC

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C74126 Laserscope KTP/532 Nd:YAG Surgical Laser System

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A73479 Blue M Oven CR07-1406F-2,204°C/400°F

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