OT115/R OT115/R巴赫曼OT115/R OT115/R巴赫曼、

v

*處理單元(CPU)是PLC的控制中樞。它按照PLC系統(tǒng)程序賦予的功能接收并存儲從編程器鍵入的用戶程序和數(shù)據(jù)；檢查電源、存儲器、I/O以及警戒定時(shí)器的狀態(tài)，并能診斷用戶程序中的語法錯(cuò)誤。當(dāng)PLC投入運(yùn)行時(shí)，首先它以掃描的方式接收現(xiàn)場各輸入裝置的狀態(tài)和數(shù)據(jù)，并分別存入I/O映象區(qū)，然后從用戶程序存儲器中逐條讀取用戶程序，經(jīng)過命令解釋后按指令的規(guī)定執(zhí)行邏輯或算數(shù)運(yùn)算的結(jié)果送入I/O映象區(qū)或數(shù)據(jù)寄存器內(nèi)。等所有的用戶程序執(zhí)行完畢之后，zui后將I/O映象區(qū)的各輸出狀態(tài)或輸出寄存器內(nèi)的數(shù)據(jù)傳送到相應(yīng)的輸出裝置，如此循環(huán)運(yùn)行，直到停止運(yùn)行。
為了進(jìn)一步提高PLC的可*性，近年來對大型PLC還采用雙CPU構(gòu)成冗余系統(tǒng)，或采用三CPU的表決式系統(tǒng)。這樣，即使某個(gè)CPU出現(xiàn)故障，整個(gè)系統(tǒng)仍能正常運(yùn)行。

鄭娟萍

廈門仲鑫航自動化設(shè)備有限公司  

PLC的工作原理
一. 掃描技術(shù)
當(dāng)PLC投入運(yùn)行后，其工作過程一般分為三個(gè)階段，即輸入采樣、用戶程序執(zhí)行和輸出刷新三個(gè)階段。完成上述三個(gè)階段稱作一個(gè)掃描周期。在整個(gè)運(yùn)行期間，PLC的CPU以一定的掃描速度重復(fù)執(zhí)行上述三個(gè)階段。
(一) 輸入采樣階段
在輸入采樣階段，PLC以掃描方式依次地讀入所有輸入狀態(tài)和數(shù)據(jù)，并將它們存入I/O映象區(qū)中的相應(yīng)得單元內(nèi)。輸入采樣結(jié)束后，轉(zhuǎn)入用戶程序執(zhí)行和輸出刷新階段。在這兩個(gè)階段中，即使輸入狀態(tài)和數(shù)據(jù)發(fā)生變化，I/O映象區(qū)中的相應(yīng)單元的狀態(tài)和數(shù)據(jù)也不會改變。因此，如果輸入是脈沖信號，則該脈沖信號的寬度必須大于一個(gè)掃描周期，才能保證在任何情況下，該輸入均能被讀入。

SEW Eurodrive MWA21A ID-No. 8230064 Sollwertwandler -used-

SEW Eurodrive Servomotor CFM71L/TF/RH1M/SM60-used-

SEW Eurodrive DEH11B DEH11B karte -unused-

SEW Eurodrive Getriebemotor KA 37 DS56L/TF/RH1M/SM10-unused-

SEW Eurodrive Getriebemotor RF27 DT90 L4MM22/MFP/BW2/RB2A -used-

SEW Eurodrive Getriebemotor WA37 DFT80K4/BMG/MM07 -unused-

SEW Eurodrive Getriebemotor SA67/T DRE100 M4/TH -unused-_

SEW MDX61B0014-5A3-4-0T S/N 08277370 + BW090-P52B - Geh?useschaden -used-

SEW Eurodrive Getriebemotor WF10 DT56L4/TF -unused-

SEW Eurodrive DER11B DER 11B 08243077 Karte -unused-

SEW Eurodrive MDX61B0014-5A3-4-0T S/N 8245630 + BW090-P52B S/N 8245630 -used- 

SEW Eurodrive Movimot MM11D-503-00 Antriebsumrichter -used- 

SEW Eurodrive Getriebemotor W20 DT63L-2/B03 -unused-

SEW EURODRIVE Movidrive MDX60A0055-5A3-4-00 + MDF60A0055-5A3-4-00 -used-

Lenze InverterDrives 8400 E84AVSCE3714SB0 Staine C - unused - in OVP

SEW Movitrac B MC07B0005-5A3-4-S0 Frequenzumrichter 0,55kW o. Abdeckung - used -

SEW Movitrac B MC07B0005-5A3-4-S0 Frequenzumrichter  0,55 kW  - used -

SEW Movidrive MDV60A0040-5A3-4-00 Frequenzumrichter - used -

SEW Eurodrive Getriebemotor WA20 DR63L4 -used-

SEW Eurodrive Motor DRS71S4/FT/MM03 -used-

SEW Eurodrive Getriebemotor WA20 DRS71S4/MM03 -used-

SEW Eurodrive Getriebemotor WF30 DRS71S4/MM05/EI7C/LN -used-

SEW Eurodrive MWA21A Id. Nr. 8230064 Sollwertwandler -unused/OVP-

SEW Movidrive Tacho-Fehler-überwachung ETF 11 ETF11 ETF-11 -used-

SEW Movidrive Sollwert-Umschaltung ESU 13 ESU13 ESU-13 -used-

SEW Eurodrive Movitrac 204XV Sach-Nr. 8254389 -used/none face-plate-

SEW Eurodrive MDx60A0110-5A3-4-00 Sach-Nr. 08226857 + MDX61B0110-5A3-4-0T -used-

SEW Eurodrive MDX60A0450-503-4-00 Sach-Nr. 8227225 + MCH42A0450-503-4-0T -used-

SEW Movidrive MDx60A0150-503-4-00 + MCH42A0150-503-4-OT + MCH42A  - used -

SEW EURODRIVE MCH42A0110-5A3-4-0T + MDx60A0110-5A3-4-00 + MCH42A + DBG11B-08 -us

SEW Eurodrive MDx60A0110-5A3-4-00 Sach-Nr. 08226857 + MCH42A0110-5A3-4-OT -used-

SEW Eurodrive Profibusmodul MFP22D 8236259 .13. 16 -used-

SEW Eurodrive Sollwertsler MFG11A 8235597.70.70 -used/OVP-

SEW Eurodrive Movifit Elektronikbox MTF11A022-503-E20A-00 -unused-

SEW Eurodrive Movifit Elektronikbox MTF11A011-503-P10A-10 -unused-

SEW Eurodrive Movifit-SNI Elektronikbox MTN11A000-503-E42A-50/U11 -unused-

SEW Movimot v MM05C-503-30 -unused/OVP-

SEW Eurodrive Movitrans Kompensationsbox TCS10A-E08-120-3 - unused/OVP-

SEW Eurodrive Movimot MM07C-503-00 -used-

SEW Eurodrive Netzfilter NF 063-503  NF063-503  -used-

SEW Eurodrive 822319X.17.11 -used-

SEW Eurodrive 8227268.11 -used-

SEW Eurodrive 8215022.13 -used-

SEW Eurodrive 822319X.17.11 0292L0347 -unused/OVP-

SEW D100 SNR 1067109 Drehzahlw?chter  - unused -

SEW MOVIDRIVE Freq.-Umrichter MDS60A0015-5A3-4-00 Nr. 8227179 - unused - in OVP

SEW MFZ 21 D MFZ21D 8236275.10 Busmodul -unused/OVP-

SEW Eurodrive Encoder-Modul DWI11A Nr:8227594.12   - unused - in OVP

SEW Eurodrive  Movitrans Kompensationsbox TCS10A-E08-120-3  - unused -

SEW Movifit Anschlussbox MTA11A 503-S011-M01-00  - unused -

SEW Eurodrive Feldbusverteiler SEW MFP32D/Z26F/AF0  - unused -

SEW Movifit Anschlussbox MTA11A-503-S033-M13-00  - unused -

SEW Movifit Anschlussbox MTA11A-503-S021-D01-00  - unused - in OVP

SEW Movifit Anschlussbox MFT11A005-503-E21A-10  - unused - in OVP

SEW Movifit Anschlussbox MFT11A-503-S023-D01-00  - unused -

SEW Movifit Anschlussbox MFT11A022-503-E20A-00 - unused - in OVP

SEW Movifit Anschlussbox MFT11A-503-S023-D01-00/BW1 - unused -

SEW Movitrac Umrichter MC07B0055-5A3-4-00 + MDX60A0054-5A3-4-00 -used-

SEW Movidrive MCH41A0300-503-4-00 + MCH41-A-00 + MDx60A0300-503-4-00

SEW EURODRIVE MC07A015-5A3-4-10 Id-No. 8272956 -used-

SEW Schnittslenwandler RS232/RS485 No.:8230773.11  - unused -

SEW Kit Movimot  MM15B-00 Stern 8266182 - unused - in OVP

SEW Eurodrive DFI Interbus-S Module ID 227 -used-

SEW EURODRIVE MM22C-503-00 Sach-Nr. 8241201 -used-

SEW MFP Profibus - Modul DP  - unused -

SEW EURODRIVE DBG11B-08 Sach-Nr. 8241546 Bedienger?t -used-

SEW EURODRIVE DBG11B-08 Sach-Nr. 8241546 Bedienger?t -unused-

SEW Movidrive MDV60A0110-5A3-4-00 & MDX60A0110-503-4-00 & Panel  - used -

SEW EURODRIVE MDV60A0220-503-4-0T Sach-Nr. 8273448 + DBG11B-08 Panel -used-

SEW Eurodrive Prozessorkarte API-12.13 9620016.058  - unused -

SEW Eurodrive EMV-Modul EF014-503 für Movitrac 31C -unused/OVP-

SEW EURODRIVE EMV-Modul EF 075-503 Sach-Nr. 8263868 -used-

SEW MOVITRAC 307 8254001 Antriebsumrichter -used-

SEW-Eurodrive BMK 1,5 / 8264635 -used-

SEW Euro Drive MFP22D/MM05B/Z28D1/AF0 Feldverteiler -unused/OVP-

SEW Movidrive Frequenzumrichter MDx60A0150-503-4-00 + MCH42A0150-503-4-0T -used-

SEW Eurodrive MCH40A-00 Sach-Nr. 8242410 Steuerkopf/Controlunit -used-

SEW Eurodrive 8262667 / BW 100-003 Bremswiderstand 100Ohm/250Watt - used -

SEW DEVICE NETMODUL MFD21A MFD 21A MF D21A -unused/OVP-

SEW EURODRIVE MDV60A0220-503-4-0T + MDV60A-0T + MDX60A0220-503-4-00 -gebraucht-

SEW EURODRIVE MDV60A0220-503-4-0T + MDV60A-0T + MDX60A0220-503-4-00 -used-

SEW EURODRIVE MCH42A0110-5A3-4-0T + MDX60A0110-503-4-00 + MCH42A -used-

SEW EURODRIVE 8281602 Gleichrichter gebraucht / used

SEW EURODRIVE EMV-Modul EF 030-503 Sach-Nr. 826385X -used-

SEW Bremsgleichrichter 8257221 *ohne Stecker* -used-

SEW Eurodrive BMV-5.0 BRAKE CONTROL UNIT 24VDC Nr.13000063 gebraucht/used

SEW Eurodrive Gleichrichter BMP 1,5 8256853 gebraucht/used

SEW Eurodrive dwi11a Encoder Modul 5V Nr.8227594.12 gebraucht/used

Sew Eurodrive PHC21A-A040M1-E21A-00/S11 Movipro ADC Feldumrichter *Gebraucht*

SEW Eurodrive UWS11A ID.-No. 822689X Schnittslenumsetzer -unbenutzt/OVP-

SEW Eurodrive W20 DT71D4 Getriebemotor

SEW EURODRIVE Typ: MOVITRAC 31C005-503-4-00 -used-

SEW Eurodive MOVITRAC 3002-403-1-00 -used-

SEW Eurodrive Movitrac 31C022-503-4-05  8264279 -used-

SEW Movidrive Frequenzumrichter MDX61B0005-5A3-4-0T -OVP-

SEW Eurodrive 08264635 BMK1,5 -used-

SEW Eurodrive 08257221 BME1,5 -used-

SEW Eurodrive MOVITRAC 31C075-503-4-00 Frequenzumrichter -used-

SEW Eurodrive MOVITRAC 31C015-503-4-00 Frequenzumrichter -used-

SEW Eurodrive HF008-503 Ausgangsfilter -used-

SEW Steuerkarte f. Frequenzumrichter, Bauteile u.a. FRS11 - 821087x - s. Beschr.

SEW EURODRIVE DIP11B PROGR. Optionskarte -OVP-

SEW EURODRIVE MC07A015-2B1-4-00 8269556 -unused/OVP-

SEW EURODRIVE MC07A015-2B1-4-00 8269556 -used-

SEW EURODRIVE MC07A022-5A3-4-00 8272514

SEW Eurodrive MDV60A0040-5A3-4-0T

SEW EURODRIVE BMK B1,5  08281602

SEW Eurodrive DEH 11B Karte

SEW-Eurodrive MGFAS2-DSM-SNI-B/ECR MOVIGEAR Antrieb

SEW  MC07B0008-5A3-4-00   MC07B00085A3400

SEW Eurodrive MDX61B0005-5A3-4-00   MDX61B00055A3400

SEW Movitrac 1006-403-1-00   1006403100

SEW Bremswiderstand 826 949 1. BW 027-003 802 276 3.

SEW MOVIDRIVE MDX61B0040-5A3-4-00  MDX61B00405A3400

SEW EURODRIVE MC07B0008-5A3-4-00 Umrichter

SEW MOVIDRIVE MDX61B0014-5A3-4-00 Frequenzumrichter 08277338 -used-

SEW MOVIDRIVE MDX61B0022-5A3-4-0T Frequenzumrichter

SEW EURODRIVE SA77/T D26 DV 100M4/BM6  SA77TD26DV100M4BM6

SEW Eurodrive SA77 D36 DV100L4/BMG/TF  SA77D36DV100L4BMGTF

SEW-EURODRIVE S47 DT71D8 Getriebemotor 0.15 kW

SEW Movitrac 31C030-503-4-00

SEW Eurodrive USS21A ID-No. 8229147 -used-

SEW Eurodrive Frequenzumrichter Typ: MCF10A0022-5A3-4-00

SEW EURODRIVE Frequenzumrichter Typ: MDF60A0015-5A3-4-00

SEW MOVIDRIVE MDS60A0015-5A3-4-00 Nr. 8264988  - used -

SEW Kit Movimot MM03C-503-00/Stern -OVP-

SEW Eurodrive MDX61B0005-5A3-4-0T inkl.Bremswiederstand -neu/unused-

SEW Eurodrive MOVIDRIVE MDS60A0110-5A3-4-0T 08273561

SEW Eurodrive MOVIDRIVE MDS60A0015-5A3-4-0T  08273502

SEW Movimot Feldverteiler MQP32D/QYC/MM22C-503-00/Z28F 1/AF2 Profibus DP -used-

SEW EURODRIVE MLU 11A 24V-Versorgung Sach.Nr.: 8233837.11  - unused - in OVP

SEW EURODRIVE Movitrac 0504-231-1-00 8258775

SEW Eurodrive BRC 03 Umrichter

SEW Kühlk?rper FKS 01

SEW EURODRIVE MOVIRET 355 SachNr.: 8251878 Umkehrstromrichter -used-

SEW EURODRIVE MOVITRAC 307  SachNr. 8254001 -unused-

SEW MOVIDYN MP 5027 AD 00

SEW EURODRIVE MDx60A0150-503-4-00 08227136 Umrichter

SEW MDx60A0075-5A3-4-00 08226849 11,2 kVA

SEW Movidrive MCH40A0150-503-4-00

SEW EURODRIVE 802 272 0.  826 269 1.

SEW Kit Movimot MM03B-00 Stern

SEW EURODRIVE Movidrive MDV60A0015-5A3-4-0T

SEW EURODRIVE Movidrive MCH42A0075-5A3-4-0T

SEW Movidrive Frequenzumumrichter MCV41A0015-5A3-4-00

SEW EURODRIVE MOVITRAC 3108A-403-4-00  1,8 kVA

SEW Movitrac 3007-403-4-00 -used-

SEW 3005-403-1-02 Antriebsumrichter

SEW MOVITRAC 3007-403-1-02

SEW EURODRIVE Antriebsumrichter 3007-043-1-02

SEW EURODRIVE 31C570-503-4-07

SEW Bremsgleichrichter 8257221

SEW Movitrac 31C220-503-4-07

SEW Movidrive MDS60A0040-5A3-4-00

SEW EURODRIVE MC07A015-5A3-4-00 Id.-No. 827206 -used-

SEW Eurodrive Frequenzumrichter MC07A011-5A3-4-00

SEW MOVIRET 380 Umkehrstromrichter

SEW Moviret 214 Umkehrstromrichter

SEW MC07A008-2B1-4-00   MC07A0082B1400 -used-

SEW EURODRIVE MOVITRAC 3115A-403-4-00 8260354  Antriebsumrichter

SEW EURODRIVE  MC07A015-2B1-4-00  Id.-No.: 8269556

SEW Eurodrive MDX61B0005-5A3-4-0T inkl.Bremswiederstand -used-

SEW Eurodrive MDX61B0005-5A3-4-0T

SEW MOVITRAC 31C022-503-4-00 inkl. EMV-Modul EF 030-503 + SEW 802 271 2

SEW Movitrac 31C005-503-4-00 inkl. EMV Modul EF 014-503 -used-

SEW MOVIDRIVE MDS60A0015-5A3-4-06

SEW Netzfilter EMV-Modul EF030-503   EF030503

SEW Eurodrive EMV-Modul EF030-503 -used-

SEW EURODRIVE 8240817 MCH42A-0T Steuerkopf / Controlunit

SEW Eurodrive BME 3 825723X

SEW-Eurodrive PSKF 321 EPH05/99/13 Getriebe

EW Eurodrive UWS11A ID-No. 822689X Schnittslenumsetzer -used-

SEW EURODRIVE MOVITRAC 3007-403-4  SachNr. 8256519 - used -

SEW Eurodrive MDx60A0110-5A3-4-00 S-Nr. 08226857 + MDX61B0110-5A3-4-0T -used-

SEW MOVIDYN MP 5011 AD 00   MP5011AD00

SEW Movitrac 3007-403-4-00 -unused/OVP-

SEW MOVITRAC 1006-403-4-00

SEW EURODRIVE EMV-Modul EF 014-503 Sach-Nr. 8263841 -unused-

SEW-Eurodrive S37 DT71D4/TF  Getriebemotor

SEW-Eurodrive  WF 30 DRS1S4/TF/DH  Getriebemotor

SEW-Eurodrive DFV 100L(/BMG/TF/EV2T/H3GD Drehstrommotor

SEW MFP21D 08236240.11.13 Profibusmodul -unused/OVP-

SEW EURODRIVE BW 200-003 Montagekühlk?rper für Bremswiderstand 8262675

SEW EURODRIVE 8223076.13  822307613    Karte

SEW EURODRIVE 8223076.16  822307616    Karte

SEW EURODRIVE 8223076.18   822307618    Karte

SEW EURODRIVE 8223076.17   822307617    Karte

SEW EURODRIVE EMV-Modul EF 014-503 SachNr.: 8263841 -used-

SEW EURODRIVE  MC07A008-5A3-4-00   8272484

SEW EURODRIVE MOVITRAC MC07A055-5A3-4-00  08272549  Umrichter

SEW EURODRIVE MOVIDYN  MAS51A010-503-50  826256X  Umrichter

SEW EURODRIVE MOVIDRIVE 31C015-503-4-00  8263337 Umrichter ohne Bedienteildeckel

SEW EURODRIVE MOVIDRIVE 31C015-503-4-00  8263337  Umrichter

SEW Eurodrive HF008-403   HF 008-403

SEW-Eurodrive  DFT 71 D8 Motor DFT71D8

SEW-Eurodrive  SA 32 DT 63L4/BO3 Getriebemotor SA32DT63L4/BO3

SEW-Eurodrive  WF 20 DT 63 L4 Getriebemotor WF20DT63L4

SEW EURODRIVE MOVIDRIVE MDV60A0075-5A3-4-00 8264872 MDX60A0075-5A3-4-00 8226849

SEW EURODRIVE DFY 112L/B/HR/TH Synchronmotor Permanentmagnetmotor

SEW EURODRIVE MOVITRAC 3004-403-1-00    3004403100

SEW EURODRIVE RF CM715/BR/TF/RH1L/SB60 Stirnradgetriebemotor

SEW EURODRIVE MOVITRANS Einspeise-Sler TPS10A0120-503-1-01 TPS10A0120503-1-01

SEW EURODRIVE MDR60A0750-503-00   MDR60A075050300

SEW-Eurodrive RO7 DT71D4/MM/05/BW1 Stirnradgetriebemot.

SEW-Eurodrive SAF47R17DT71D4/MM05/BW1 Schneck.getr.mot.

SEW Movitrac 3122A-403-4-00   3122A403400

SEW Eurodrive MDS60A0022-5A3-4-00   MDS60A00225A3400

SEW Eurodrive MDS60A0022-5A3-4-00  MDS60A00225A3400

SEW Eurodrive MDS60A0220-503-4-00 MDS60A Sach-Nr. 8265097 -unused-OVP-

SEW Eurodrive Movitrac  3004-403-1-00  3004403100

SEW EURODRIVE MOVITRAC 203DF 8254281

SEW Eurodrive 8022712  802 271 2

SEW 8217726.14  821772614

SEW 8217726.16  821772616

SEW Eurodrive  EF 075-503   EF075503

SEW Eurodrive  NF115-503   NF 115 503

SEW-Eurodrive Schneckengetriebe SA/T 67  AQA 140/2 

SEW-Eurodrive Kegelradgetriebe K 37  AQH 115/3 K37AQH11

SEW-Eurodrive Kegelradgetriebe KT 47/T AQH 115/3 KT47/T

SEW Planetengetriebe PSF 612/R/EK04 EURODRIVE PSF612/EK

SEW Planetengetriebe RPL 30-1EK EURODRIVE RPL30-1-EK

SEW MFP22D/MM058/228D 1/AF0 MFP22DMM058228D1AF0

SEW BW 147-T Bremswiderstand -unused-_

SEW Planetengetriebe PSF 312/EK 03/R EURODRIVE PSF312

SEW MOVIDRIVE MCF40A0110-5A3-400 MDx60A0110-5A3-4-00 -used-

SEW-Eurodrive RF 60 DT 80 K4 Getriebemotor

SEW-Eurodrive KHZ 87/R CM90S/BR/TF/AS1HKK Getriebemotor

SEW-Eurodrive KAF 77/RCM71S/BR/TF/AS1H/KK Getriebemotor

SEW-Eurodrive KHZ 77/R CM71S/BR/TF/AS1HKK Getriebemotor

SEW MOVITRAC 3004-403-1-00 SachNr. 8256357  6,6 kVA

SEW MOVITRAC 3011-403-1-00 SachNr. 825639X  16 kVA

SEW-Eurodrive R40DT80N4 Getriebemotor

BROOK HANSEN GFNB4B5.6-WU-DA90LK-H Getriebemotor

SEW Eurodrive R40DT63K4 Getriebemotor

SEW Eurodrive DFT71D4/SHG

SEW Movitrac 3130A-403-4-00  313 0A-403-4-00

SEW EURODRIVE RF37 DT80K4 /BMG/TH Getriebemotor

SEW MOVIDRIVE PROFIBUS FSM/DP 8227241.13 -unused-

SEW MOVIDRIVE MDV60A030-5A3-4-0T Umrichter

ABB MS450 MS 450 1SA M45 0000 R1004 Motorschutzschalter

SEW Eurodrive R32 DR63L4  R32DR63L4

SEW Eurodrive R27 DT80K4/TF  R27DT80K4/TF

SEW Eurodrive R27 DT80N2/TF  R27DT80N2/TF

SEW Eurodrive EMV-Modul EF030-503 -unused/OVP-

SEW Eurodrive EMV-Modul EF014-503 - used -

SEW EMV-Modul  EF075-503

SEW Eurodrive KAF37 DY71HL/B/TH/SV1 Kegelradgetriebe

SEW Eurodrive KAF37 DY71LB/TH/SV2 Kegelradgetriebe