MPC240-128/512M  Bachmann  plc MPC240-128/512M  Bachmann  plc MPC240-128/512M  Bachmann  plc 

*处理单元(CPU)是PLC的控制中枢。它按照PLC系统程序赋予的功能接收并存储从编程器键入的用户程序和数据；检查电源、存储器、I/O以及警戒定时器的状态，并能诊断用户程序中的语法错误。当PLC投入运行时，首先它以扫描的方式接收现场各输入装置的状态和数据，并分别存入I/O映象区，然后从用户程序存储器中逐条读取用户程序，经过命令解释后按指令的规定执行逻辑或算数运算的结果送入I/O映象区或数据寄存器内。等所有的用户程序执行完毕之后，zui后将I/O映象区的各输出状态或输出寄存器内的数据传送到相应的输出装置，如此循环运行，直到停止运行。
为了进一步提高PLC的可*性，近年来对大型PLC还采用双CPU构成冗余系统，或采用三CPU的表决式系统。这样，即使某个CPU出现故障，整个系统仍能正常运行。

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郑娟萍

厦门仲鑫航自动化设备有限公司  

PLC的工作原理
一. 扫描技术
当PLC投入运行后，其工作过程一般分为三个阶段，即输入采样、用户程序执行和输出刷新三个阶段。完成上述三个阶段称作一个扫描周期。在整个运行期间，PLC的CPU以一定的扫描速度重复执行上述三个阶段。
(一) 输入采样阶段
在输入采样阶段，PLC以扫描方式依次地读入所有输入状态和数据，并将它们存入I/O映象区中的相应得单元内。输入采样结束后，转入用户程序执行和输出刷新阶段。在这两个阶段中，即使输入状态和数据发生变化，I/O映象区中的相应单元的状态和数据也不会改变。因此，如果输入是脉冲信号，则该脉冲信号的宽度必须大于一个扫描周期，才能保证在任何情况下，该输入均能被读入。

Rexroth 4WE 6 J61/EG24N4Z4 4WE6J61/EG24N4Z4 00569430 -used-

Rexroth Hydronorma 423 261 Q21, 2FRM 10-31/50LB Stromregelventil -used-

Rexroth 5-4WE 10 E13-33/CG24NK4 54WE10E1333CG24NK4 R900921475 Wegeventil -unused

Rexroth Hydraulics 3WE 6 A62/EG24N9K4  R900561180 -used-

Rexroth Hydraulics 3WE 6 A61/EG24NK4  00952690 -used-

Rexroth Hydraulics 5-3WE 10 A33/CG24N9K4 53WE10A33/CG24N9K4 00507735 -used-

Rexroth 4 WE 6 C62/EG24N9K4  4WE6C62/EG24N9K4 -used-

REXROTH Servomotor MAC112B-0-60-4-C/180-A-0-used-

Rexroth Servomotor MDD071C-N-030-N2S-095PA0-used-

Rexroth VT 2000 S 45 VT2000 S45 -used-

Rexroth Getriebe GTP095-MO-1-004B03 I=4:1-unused-

Rexroth ZDR 6 DA3-43/75Y MNR: R900410864 -used-

Rexroth 4WRSE 10 R5-00-32/G24K0/A1V-689 4WRSE10R50032/G24K0/A1V689 -used-

Rexroth Drehstrommotor MNR:3842503582-unused-

Rexroth DKC03.3-040-7-FW Inverter & FWA-ECODR3-FGP-02VRS  - unused - in OVP

Rexroth Servomotor MSM040B-0300-NN-M0-CC1 -used-

Rexroth HMS01.1N-W0150-A-07-NNNN 911R297164 *used*

Rexroth HMS01.1N-W0150-A-07-NNNN + CSB01.1C-SE-ENS-NN-S-NN-FW *used*

Rexroth Hydrauliks Z2FS 6-3-43/2QV  Z2FS 6-3-43/2QV ohne Schlüssel -used-

Mannesmann Rexroth 2 FRM 6 A 39-21/3 0RV Stromregelventil ohne Schlüssel-unused-

Mannesmann Rexroth HED 8 0A 11/100 K14 KS Hydraulikventil -unused-

Mannesmann Rexroth HED 8 0A 12/50  K14KS Hydraulikventil -unused-

Rexroth Hydraulics 4WE 6 Y62/EG24N9K4 Magnetventil 24VDC 1,25A -unused-

Rexroth IndraDrive M HMS01.1N-W0110-A-07-NNNN R911310462 *used/OVP*

Rexroth HCS02.1E-W0028-A-03-NNNN  &  SB01.1C-SE-ENS-L1-S-NN-FW  * used *

Rexroth Einzelachs-Wechselrichter HMS01.1N-W0020-A-07-NNNN *used*

Rexroth HMV01.1R-W0045-A-07-NNNN R911296725 -used-

Rexroth IndraDrive M HMS01.1N-W0110-A-07-NNNN R911310462 *used*

Rexroth HNK01.1A-A075-E0106-A-500-NNNN Netzfilter/Drossel  InLineFilter * used *

Rexroth HMS01.1N-W0150-A-07-NNNN + CSB01.1C-SE-ENS-EN2-L1-S-NN-FW *used*

Rexroth HCS02.1E-W0054-A-03-NNNN + CSB01.1C-SE-ENS-EN2-L1-S-NN-FW *used*

Rexroth CSB01.1N-SE-ENS-NNN-NN-S-NN-FW  R911305276 *used/OVP*

Rexroth HCS02.1E-W0054-A-03-NNNN inkl CSB01.1C-SE-ENS-EN2-NN-S-NN-FW *used* 

Rexroth Indradrive C HLB01.1C-01K0-N06R0-A-007-NNNN  R911299878 *used*

Rexroth HCS02.1E-W0028-A-03-NNNN + CSB01.1N-SE-ENS-NNN-NN-S-NN-FW *used*

Rexroth IndraDriveC Leistungsteil HCS02.1E-W0012-A-03-NNNN R911326690 *used/OVP*

Rexroth HCS02.1E-W0012-A-03-NNNN + CSB01.1N-SE-NNN-NN-S-NN-FW *used*

Rexroth HCS01.1E-W0028-A-03-B-ET-EC-NN-L4-NN-FW R11331611 inkl Panel *used/OVP*

Rexroth IndraDrive HCS02.1E-W0054-A-03-NNNN Leistungsteil o. Karte  * used *

Rexroth IndraDrive HCS01.1E-W0018-A-03-B-ET-EC-NN-NN-NN-FW R911325247 *used/OVP*

Rexroth IndraDrive C Leistungsteil HCS02.1E-W0028-A-03-NNNN o.Karte  * used *

Rexroth CSB01.1C-SE-ENS-EN2-NN-S-NN-FW  R911305500 *used*

Rexroth R911307292 CSB01.1C-SE-ENS-EN2-L1-S-NN-FW *used*

Rexroth CSH01.1C-SE-EN2-NNN-MEM-NN-S-XP-FW  R911335439 *used*

Rexroth Frizlen R911 306921 FGFLU3100902-7.4 *used*

Rexroth CSH01.3C-SE-ENS-NNN-CCD-L2-S-NN-FW R911329428 + 128 MB Ind. karte *used*

Rexroth CSH01.3C-SE-ENS-ENS-CCD-L2-S-NN-FW R911342168 + 128MB Ind. karte *used*

Rexroth CSB01.1C-SE-ENS-EN2-L1-S-NN-FW  R911307292 *used*

Rexroth CSB01.1C-SE-ENS-NNN-L2-S-NN-FW R911328494 *used*

Rexroth IndraDrive Cs HCS01.1E-W0028-A-03-B-ET-EC-NN-L4-NN-FW  R911331611 *used*

Rexroth IndraDrive M HMS01.1N-W0036-A-07-NNNN R911295324 *used*

Rexroth CSB01.1C-SE-ENS-NNN-L2-S-NN-FW R911328494 mit PFM02.1-A07 karte *used*

Rexroth CSB01.1N-SE-ENS-NNN-L1-S-NN-FW  R911307284 FD:07W05 *used*

Rexroth Indramat DKC02.3-100-7-FW Eco Drive + FWA-ECODR3-SMT-01VRS-MS -used-

Rexroth Indramat DKC02.3-100-7-FW Eco Drive + FWA-ECODR3-SMT-02VRS-MS -used-

REXROTH Prop. Verst?rker VT5005 S13-A R1

Rexroth 0 820 055 052 0820055052 -used-

Rexroth Hub Quereinheit HQ2U /3842999903 mit Motor -unused-

Rexroth Hydronorma Directional Valve  4WRZ 16 EA150-50/6A24Z4/M - unused -

Rexroth Hydronorma Directional Valve  4WRZ 16 EA150-50/6A24Z4/V - unused -

REXROTH Getriebe GS 14-1 3842527865 i=10-unused- 

Rexroth IndraControl VEP 30.2 VEP30.2 MNR: 1070.924.048-102 + FlashCard -used-

Rexroth Hydronorma 4WE10T21/AG24NZ5L S099 4WE10T21/AG24NZ5LS099 -used-

Rexroth Hydraulics 4WE 6 T53/BG24NZ5L1  4WE6T53/BG24NZ5L1 Hydraulicventil -used-

Rexroth DBETR-10/350G24K4M MNR R900352424 -used-

Rexroth Hydronorma DBW 10 B2-42/315Y6AG24NZ5L  DBW10B2-42/315Y6AG24NZ5L -used-

Mannesmann Rexroth 3WE 10 A30/CG24N9Z4  3WE10A30/CG24N9Z4 -used-

Rexroth M-3 SEW 6 C36/420M  M-3SEW6C36/420M  G24 N9K4/B15 3 36180  -used-

Rexroth LEMA-AB132X631 -unused-

Rexroth Z2FS 6-2-44/2QV R900481624 FD78711 Hydraulic Pressure Regulator -unused-

Rexroth MSK040C-600-NN-M1-UG1-NNNN R911306061 3-Phasen Magnet Motor -used-

Rexroth MNR: R1681201323 FD: 10706 Integriertes Messsystem -unused/OVP-

Rexroth Wege-Ventil 4WRA 6 E15-22/G24N9K4/V-589 -used-

Rexroth PE5 R412007975 + R412006133 Pneumatik -unused-

Rexroth VT 3000 S36  Proportionalverst?rker  - used -

Rexroth LR-Führungswagen WA:1.1140042-27.1.001  R190612500  - unused -

REXROTH R 412 004 580 Sensor R412004580 -unused-

Rexroth Pneumatikzylinder 0822352002 Hub: 50 Pmax : 10 Bar -unused-

Rexroth RF-FLS IB M12 DI 8 M12 -used-

Rexroth RF-FLS IB M12 DIO 4/4 M12-2A Fw: 03 -used-

Rexroth IB DIO 4/4 RF-FLS IB M12 DIO 4/4 M12-2A -used-

Rexroth Indramat RECO RMG12.2-NN Interbus -used-

Rexroth Indramat RECO RMG12.2-NN Interbus - Halterung besch?digt -used-

Rexroth MNR:R166111410 Kugelwagen 7210 Linear-Block  - unused -

Rexroth DEA 5.2 DEA5.2 Interface-Card -unused/in box-

Rexroth CDB01.1C-SE-ENS-ENS-NNN-NNN-S1-S-NN-FW -unbenutzt-

REXROTH 0 830 100 435 Sensor -unused-

Rexroth Bosch Group CL400 A24V-/0.5A-ESF Version: 1 -unbenutzt/OVP-

Rexroth Indramat Netzfilter NFD03.1-480-030 3xAC 480V/ 30 A -used-

Rexroth IndraDrive HCS02.1E-W0028-A-03-NNNN + CSB01.1C-SE-ENS-EN1-NN-S-NN-FW

Rexroth Indramat R-IB IL 24 PWR IN -Part.-No. 289312 -Neu/OVP-

Bosch-Rexroth HMS01.1N-W0020-A-07-NNNN IndraDrive CSH01.2C-PB-ENS-NNN-CCD-NN-S-N

Bosch-Rexroth HMS01.1N-W0020-A-07-NNNN IndraDrive CSB01.1N-PB-ENS-NNN-NN-S-NN-FW

Rexroth MSK040B-0600-NN-M1-UG0-NNNN -NEU/OVP-

Rexroth  Kugelgewindetrieb R 1510221085   R1510221085

Rexroth R-IB IL24 DI 8-PAC MNR: R911170751-101 Module-ID: 190 -used-

Rexroth 0811404132  0 811 404 132

Rexroth 0820408002 3/2-Wegeventil - OVP verschwei?t -

Rexroth Bosch R928045999 2,5/70 H6XL-B00-0-M  Filterelement

REXROTH R 412 004 577 Sensor R412004577 -unused-

Rexroth RZW01.1-037-NNN  RZW011037NNN

Rexroth R-IB IL 24 DO 4-PAC R-IBIL24DO 4-PAC R911170755-101 sealed

Rexroth R-IB IL 24 DO 4-PAC  R-IBIL24DO 4-PAC   R911170755-101

Rexroth CFL01.1-P1  Funktionsmodul Profibus-Master

Rexroth VAM40.1-PB-NA-TA-TA-VB-MA-1608-NN  Bedienterminal

REXROTH HDC01.1-A040N-PB01-01-FW DURADRIVE DURA DRIVE

Rexroth HCS02.1E-W0028-A-03-NNNN  incl. CSB01.1C-PB-ENS-NNN-L2-S-NN-FW

Rexroth HCS02.1E-W0012-A-03-NNNN  HCS 02.1E-W0012-A-03-NNNN   Indradrive HCS02

Rexroth 1 827 414 303   1827414303  EX-03 IEC 2082 X

Rexroth R167129420 Kugelwagen -OVP-

Rexroth Linear-Set R170644070  -OVP-

REXROTH VT-VSPA1-1-11B AMPLIFIER CARD 00033823

Rexroth Indramat FWA-PPcr0*-SY*-08VRS-MS-T2***

Rexroth Indramat MAC092B-0-QD-4-C/095B-1/WWI524LV/S001

MANNESMANN REXROTH VT-VSPA1-1-11 00033823 Amplifier

Siemens 3RV2411-0JA10 Leistungsschalter

Rexroth CDB01.1C-SE-ENS-ENS-NNN-NNN-S1-S-NN-FW

Rexroth CDB1.1C-SE-ENS-EN2-NN-S-NN-FW

Rexroth CDB01.1C-SE-ENS-ENS-EN2-NNN-S1-S-NN-FW

Rexroth CSH01.1C-SE-EN2-NNN-MEM-NN-S-NN-FW

REXROTH VT50058-17a

REXROTH Prop. Verst?rker VT5005-12 R5

Rexoth Bosch VM310 0 608 750 109 Versorgungsmodul -unused/OVP-

Rexroth Mecman Prog. Anlaufeinheit C15i 535 162 015 0 -OVP-

Rexroth DKC03.3-040-7   DKC0330407 -used/OVP-

Rexroth MAC112B-0-BD-2/180-1-1/SO11

Rexroth MAC 112C-1-KD-4-C/130-A-1/DI520LV/S005

Rexroth MAC 112-0-KD-4-C/130-A1/DI520LV/S005

Rexroth MAC090B-0-ND-2-C/130-A-1/S012

Rexroth MS2A20/100/1450   MS2A201001450

REXROTH Elektrischer Verst?rker Typ VT 2000

Rexroth Ventil 581-117 24V=CNOM0

Rexroth Indramat MKD071B-061-KG0-KN  MKD071B061KG0KN

MANNESMANN REXROTH VT3006 S34 R5

MANNESMANN REXROTH VT3006-36 AMPLIFIER

REXROTH  R 412 004 577 Sensor

Rexroth  FD: 08W17   MMR: 5610120600

REXROTH  Druckschalter HED 2 OA 24/400

REXROTH  Druckschalter HED 2 OA 24/100

REXROTH  Druckschalter HED 2 OA 24/100

Rexroth DKC03.3-040-7   DKC0330407 -unused/OVP-

Rexroth  Kugelgewinde-Mutter MNR R151241075

Rexroth  Kugelgewindetrieb KPL.M. 1512-1-1013  15121101

Rexroth MNR:R161974060 Mechanische Federspeicherklemme