1794-OB16 AB
CPU的構(gòu)成
CPU是PLC的核心，起神經(jīng)中樞的作用，每套PLC至少有一個CPU，它按PLC的系統(tǒng)程序賦予的功能接收并存貯用戶程序和數(shù)據(jù)，用掃描的方式采集由現(xiàn)場輸入裝置送來的狀態(tài)或數(shù)據(jù)，并存入規(guī)定的寄存器中，同時，診斷電源和PLC內(nèi)部電路的工作狀態(tài)和編程過程中的語法錯誤等。進入運行后，從用戶程序存貯器中逐條讀取指令，經(jīng)分析后再按指令規(guī)定的任務(wù)產(chǎn)生相應(yīng)的控制信號，去指揮有關(guān)的控制電路。
CPU主要由運算器、控制器、寄存器及實現(xiàn)它們之間的數(shù)據(jù)、控制及狀態(tài)總線構(gòu)成，CPU單元還包括外圍芯片、總線接口及有關(guān)電路。內(nèi)存主要用于存儲程序及數(shù)據(jù)，是PLC*的組成單元。
在使用者看來，不必要詳細分析CPU的內(nèi)部電路，但對各部分的工作機制還是應(yīng)有足夠的理解。CPU的控制器控制CPU工作，由它讀取指令、解釋指令及執(zhí)行指令。但工作節(jié)奏由震蕩信號控制。運算器用于進行數(shù)字或邏輯運算，在控制器指揮下工作。寄存器參與運算，并存儲運算的中間結(jié)果，它也是在控制器指揮下工作。
CPU速度和內(nèi)存容量是PLC的重要參數(shù)，它們決定著PLC的工作速度，IO數(shù)量及軟件容量等，因此限制著控制規(guī)模?！ ?/span>
廈門莫格電氣自動化有限公司
：
：張美霞
電 話：/
傳 真：
地 址: 廈門市思明區(qū)檳榔西里197號第四層B19單元
http://www.mogget。。ｃｎ/
PLC系統(tǒng)的其它設(shè)備
1、編程設(shè)備：編程器是PLC開發(fā)應(yīng)用、監(jiān)測運行、檢查維護*的器件，用于編程、對系統(tǒng)作一些設(shè)定、監(jiān)控PLC及PLC所控制的系統(tǒng)的工作狀況，但它不直接參與現(xiàn)場控制運行。小編程器PLC一般有手持型編程器，目前一般由計算機（運行編程軟件）充當編程器。
2、人機界面：zui簡單的人機界面是指示燈和按鈕，目前液晶屏（或觸摸屏）式的一體式操作員終端應(yīng)用越來越廣泛，由計算機（運行組態(tài)軟件）充當人機界面非常普及。
3、輸入輸出設(shè)備：用于*性地存儲用戶數(shù)據(jù)，如EPROM、EEPROM寫入器、條碼閱讀器，輸入模擬量的電位器，打印機等?！ ?/span>
八、PLC的通信聯(lián)網(wǎng)
依靠*的工業(yè)網(wǎng)絡(luò)技術(shù)可以迅速有效地收集、傳送生產(chǎn)和管理數(shù)據(jù)。因此，網(wǎng)絡(luò)在自動化系統(tǒng)集成工程中的重要性越來越顯著，甚至有人提出"網(wǎng)絡(luò)就是控制器"的觀點說法。
PLC具有通信聯(lián)網(wǎng)的功能，它使PLC與PLC 之間、PLC與上位計算機以及其他智能設(shè)備之間能夠交換信息，形成一個統(tǒng)一的整體，實現(xiàn)分散集中控制。多數(shù)PLC具有RS-232接口，還有一些內(nèi)置有支持各自通信協(xié)議的接口。
PLC的通信，還未實現(xiàn)互操作性，IEC規(guī)定了多種現(xiàn)場總線標準，PLC各廠家均有采用。
對于一個自動化工程(特別是中大規(guī)?？刂葡到y(tǒng))來講，選擇網(wǎng)絡(luò)非常重要的。首先，網(wǎng)絡(luò)必須是開放的，以方便不同設(shè)備的集成及未來系統(tǒng)規(guī)模的擴展；其次，針對不同網(wǎng)絡(luò)層次的傳輸性能要求，選擇網(wǎng)絡(luò)的形式，這必須在較深入地了解該網(wǎng)絡(luò)標準的協(xié)議、機制的前提下進行；再次綜合考慮系統(tǒng)成本、設(shè)備兼容性、現(xiàn)場環(huán)境適用性等具體問題，確定不同層次所使用的網(wǎng)絡(luò)標準。
NNB CKD SSD-ML-40-40 PNEUMATIC CYLINDER
PARKER E-43-B-0500 INSTRUMENT GRADE POLYETHYLENE TUBING .170" X 500', NIB
NUMATICS 110/120V .08A SOLENOID VALVE, 237-325B
SMC CYLINDER CDLAFN100-175-E
BIMBA SS PNEUMATIC CYLINDER SS311-R
PARKER * SAE CODE 61 FLANGE HEAD * 11571-16-16
NUMATICS SOLENOID AIR PILOT ACTUATED VALVE R20BB500MP00061 / R20BBD00MP00061
SMC 3.5MPa PNEUMATIC CYLINDER CHDAL40-400-J59?WL
INTEGRAL HYDRAULIK HYDRAULIC CYLINDER1009882?1 160BAR 018-1354-062-00?3
NUMATICS 238610 110/120V 50/60HZ SOLENOID VALVE COIL, MP-C-080-032-D
MILCO PNEUMATIC CYLINDER CCC-204-4.0 REV B 100712
90 BRASS ELBOW ASSORTMENT, LOT OF 9
NUMATICS SERIES ISO5599/11 150 PSIG SOLENOID VALVE I24BB415MP
PARKER JIC P 16 SS FLUID CONNECTING NUT, LOT OF 17
HYDRAULIC THREAD NUT HMV 134/A-101
NUMATICS 150 PSIG SOLENOID VALVE I24SS415K
NUMATICS 110/120V .37A 150 PSIG-AIR SOLENOID VALVE W/ BASE, 554SA43AK000030
PARKER * PARKER TRIPLE-LOK 90 ELBOW * UNKNOWN
NUMATICS PNEUMATIC SOLENOID VALVE I35RS115J00 0000 100881
HYDAC BETAFIT 1.06.39D03BN HYDRAULIC FILTER ELEMENT, NIB
NORGREN 175oF, 300PSIG, REGULATOR R24-401-RNXA
FESTO 32MM BORE 250MM STROKE PNEUMATIC CYLINDER, DNU-32-250-PPV-?A
YUKEN HYDRAULIC CYLINDER CJT70-FA32B50B-?PD-EK
SMC CYLINDER CDNAFN80N-100-D?-J59WLS
LUBRIQUIP PUMP ASSEMBLY AL-25, 521-000-020, L-90
FESTO 63MM BORE 50MM STROKE PNEUMATIC CYLINDER, DKE-63-50-PPV-A
MAC 24 VDC 6.0W SOLENOID VALVE 280B-506AAAA
SMC 50MM BORE 200MM STROKE PNEUMATIC CYLINDER CNAFN50N-200-D
YUKEN HYDRAULIC CYLINDER CJT70-FA32B600B?-BAD
BI * BI UNION FITTING * UNKNOWN
FESTO 40MM BORE 400MM STROKE PNEUMATIC CYLINDER, DNC-40-400-PPV-?A, NNB
PARKER P11771 -20-20 CRIMP FITTING SAE CODE 61 FLANGE HEAD 45 ELBOW
YUKEN CYLINDER CJT70-FA80B80H-?CBA-N 2012-411A
MAC PR65C-11BA 150 PSI PR65C SERIES PRESSURE REGULATOR, NNB
FESTO 145 PSI, SERIES ED08-14918 PNEUMATIC CYLINDER ADV-40-50-A
BOSCH RACINE 221887
SMC VXZ2240L SINGLE UNIT ZERO DIFFERENTIAL PILOT OPERATED DIAPHRAGM VALVE
ASHCROFT DURAGAUGE BRONZE TUBE 30-0VACUUM-IN/H?G. GAUGE 45-1379 103764
PARKER 11971-32-32 SAE CODE 61 FLANGE HEAD 90 ELBOW
MAC 6311A-512-PM-11?1DA 110/120 VOLTS 50/60 SOLENOID VALVE
MLOK CYLINDER RCN-138600CA
NUMATICS 24VDC, 4.0W, 150PSIG-AIR, PNEUMATIC VALVE I34BA400MP00061
SMC PNEUMATIC SERVICE KIT NIB CK95-80 105415
PARKER 150PSI 1034kPa PNEUMATIC SOLENOID VALVE B511ABB53C
NUMATICS 150PSIG PNEUMATIC SOLENOID VALVE NNB I35SA43BK000030 100509
NUMATICS PNEUMATIC PRESSURE REGULATING VALVE 031RD700O000000 NIB
MLOK CYLINDER RCN-138600-800-?05
NUMATICS 110/120V .06A 60HZ 150 PSIG SOLENOID VALVE, 031SA415O011Z
NUMATICS 120 V, 50-60HZ, .08A SOLENOID VALVE 1525A425K
NUMATICS PNEUMATIC AIR FILTER REGULATOR F22B-01AM 99883
NUMATICS MAX OPERATING PRESSURE 150 PSIG SOLENOID VALVE 135BB515MP00061
FESTO CPV18-VI U502 DISTRIBUTION MANIFOLD ASSEMBLY 185 886 T402
GRACO 250PSI 17.5BAR AIR LINE REGULATOR A01 A 214848
FESTO 63MM BORE 920MM STROKE PNEUMATIC CYLINDER, DKE-63-920-PPV-?A
ADVANCE AUTOMATION AAC SK-1176 PNEUMATIC CYLINDER SERIES I, NNB
TAIYO PNEUMATIC CYLINDER 40X30 NPB031A000-0
FESTO ALUMINUM CYLINDER 10543 DKE-100-60-PPV-?P
ELECTRON BEAM ENGINEERING QCC HD 504 WELDING CABLE, LOT OF TWO, NIB
FESTO 145 PSI 100MM BORE 160MM STROKE PNEUMATIC CYLINDER, DNC-100-160-PPV?, NNB
FESTO 32mm BORE 150mm STROKE PNEUMATIC CYLINDER DNC-32-150-PPV-?A NNB
FESTO 63MM BORE 125MM STROKE PNEUMATIC CYLINDER, DNU-63-125PPV-A?, NNB
NUMATICS 120V, 0.11A, 150 PSIG SOLENOID VALVE I52SA400K046T
MAC VAC/25-150PSI, 24VDC, 2.5W, PNEUMATIC SOLENOID VALVE 6523B-000-PM-59?2DA
BIMBA BRACKET CYLINDER D-167
PARKER 035341300B FILTER, NIB
SMC 1.0MPA PNEUMATIC CYLINDER DLMBN20-25C-G59?LS
PARKER 5000PSI DIRECTIONAL CONTROL VALVE 44036-2026
PARKER 250PSI ROTARY PNEUMATIC ACTUATOR PTR252-0983F-AX?22-C21
SMC 0.05-0.85MPA AIR REGULATOR AR4000-04BG
KYOHO MACHINE HCI-XD CYLINDER 40MM BORE 435MM STROKE 40X435-FA 74H40956
STAFFA FIXED DISPLACEMENT HYDRAULIC MOTOR HM/HDB2005/11
FESTO CPV14-VI TD02 DISTRIBUTION MANIFOLD ASSEM W/ SILENCER AND ELBOW FITTINGS
MAC 110/120VOLTS 150PSI SOLENOID VALVE 6311D-211-PM-11?1DA
FESTO 145 PSI 100MM BORE 30MM STROKE PNEUMATIC CYLINDER, ADVU-100-30-A-P?-A, NNB
YUKEN HYDRAULIC CYLINDER CJT 70 FA32B 20N-DND EK 11A
BELLOWS 110/120V 50/60HZ PNEUMATIC SOLENOID PILOT VALVE, K175-9035
FESTO 145 PSI 50MM BORE 90MM STROKE PNEUMATIC CYLINDER, DNG-50-90-PPV-A?, NNB
FESTO CPV14-VI T402 DISTRIBUTION MANIFOLD ASSEM W/ SILENCER AND ELBOW FITTINGS
FESTO 145 PSI 50MM BORE 153MM STROKE PNEUMATIC CYLINDER, DNGU-50-153-PPV?-A, NNB
YUKEN HYDRAULIC CYLINDER CJT70-FA32B25N-?AND-EK 20A
MAC 110/120V 50/60HZ 150 PSI SOLENOID VALVE, 58D-43-116AA
CKD PNEUMATIC CYLINDER SSD-KL-50-80
PARKER HHB4087501 ALR 35-150 PSIG CONTROL VALVE, NNB
NUMATICS PNEUMATIC FILTER MODEL F30B-04C NIB
FESTO FLAT CYLINDER DZH-50-300-PPV-?A
BIMBA AIR CYLINDER BFT-093-D
PARKER 11771-32-32 CRIMP FITTING SAE CODE 61 FLANGE HEAD -45 ELBOW
KYOHO MACHINE HCI-XD CYLINDER 50MM BORE 115MM STROKE 50X115-CB 66H50888
PARKER 2.00 " BORE 8.000" STROKE HYDRAULIC CYLINDER JMAU14A
LENZ * LENZ NUT FITTING * UNKNOWN
NUMATICS 150PSIG, 110-120V, 50/60Hz, .15A, SOLENOID VALVE 081SS400K000030
FAIRCHILD TD C17800-406 PNEUMATIC TRANSDUCER, NNB
NUMATICS L23PM452O000000 PILOT VALVE, NNB
MAC PR92C-KECA 120 PSI PRESSURE REGULATOR, NIB
SMC PNEUMATIC CYLINDER 25MM BORE 35MM STROKE CQSB25-35D
NUMATICS 24VDC 4.0W 150 PSIG-AIR PNEUMATIC SOLENOID VALVE, I24BA415MP
NUMATICS 0-232 PSIG PNEUMATIC SOLENOID VALVE W/ BASE, I34JJ641O000000
NUMATICS 110/120V 50/60HZ 150 PSIG-AIR SOLENOID VALVE W/ BASE, I35BA415KKP0003?0
MAC PR92C-KECA 120 PSI PRESSURE REGULATOR WITH GAUGES, NIB
VERSA 120V 100PSI SOLENOID VALVE ESM 8012 44 Z CLL36
KYOHO HCI-XC HYDRAULIC CYLINDER 40X100-FB / 56H40995
NUMATICS 100-115V/50Hz, 110-120V/60Hz, .06A SOLENOID COIL 237-1045B
MAC 24 VDC 2.5W 150 PSI SOLENOID VALVE W/ BASE, 6313D-611-PM-59?1DA
BELLOWS INTERNATIONAL SOLENOID VALVE W / PILOT VALVE L615-49-102 / K065-9035
ASHCROFT DURAGAUGE 30-IN./HG.VAC-3?0PSI PRESSURE GAUGE 102553
MILWAUKEE CYLINDER 4.00 BORE 6.00 STROKE 1000 PSI HYDRAULIC CYLINDER LH61
CMT DOUBLE ACTING IMPACT MARKER W/ PROXIMITY SENSOR 288-0B-25-PML-W?2817
SMC 1.0MPS PNEUMATIC PRESSURE REGULATOR FILTER AF4000-04D
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