結(jié)合PLC的組成和結(jié)構(gòu)分析PLC的工作原理更容易理解。PLC是采用周期循環(huán)掃描的工作方式，CPU連續(xù)執(zhí)行用戶程序和MEASUREX 053279-02任務(wù)的循環(huán)序列稱為掃描。CPU對用戶程序的執(zhí)行過程是CPU的循環(huán)掃描，并用周期性地集中采樣、集中輸出的方式來完成的。一個掃描周期主要可分為：
（1）讀輸入階段。 每次掃描周期的開始，先讀取輸入點(diǎn)的當(dāng)前值，然后寫到輸入映像寄存器區(qū)域。在之后的用戶程序執(zhí)行的過程中，CPU訪問輸入映像寄存器區(qū)域，而并非讀取輸入端口的狀態(tài)，輸入信號的變化并不會影響到輸入映像寄存器的狀態(tài)，通常要求輸入信號有足夠的脈沖寬度，才能被響應(yīng)。
（2）執(zhí)行程序階段。 用戶程序執(zhí)行階段，PLC按照梯形圖的順序，自左而右，自上而下的逐行掃描，在這一階段CPU從用戶程序的條指令開始執(zhí)行直到*后一條指令結(jié)束，程序運(yùn)行結(jié)果放入輸出映像寄存器區(qū)域。在此階段，允許對數(shù)字量I/O指令和不設(shè)置數(shù)字濾波的模擬量I/O指令進(jìn)行處理，在掃描周期的各個部分，均可對中斷事件進(jìn)行響應(yīng)。
（3）處理通信請求階段。 是掃描周期的信息處理階段，CPU處理從通信端口接收到的信息。
（4）執(zhí)行CPU自診斷測試階段。在此階段CPU檢查其硬件，用戶程序存儲器和所有I/O模塊的狀態(tài)。
（5）寫輸出階段。每個掃描周期的結(jié)尾，CPU把存在輸出映像寄存器中的數(shù)據(jù)輸出給數(shù)字量輸出端點(diǎn)（寫入輸出鎖存器中），更新輸出狀態(tài)。然后PLC進(jìn)入下一個循環(huán)周期，重新執(zhí)行輸入采樣階段，周而復(fù)始。
如果程序中使用了中斷，中斷事件出現(xiàn)，立即執(zhí)行中斷程序，中斷程序可以在掃描周期的任意點(diǎn)被執(zhí)行。
如果程序中使用了立即I/O指令，可以直接存取I/O點(diǎn)。用立即I/O指令讀輸入點(diǎn)值時，相應(yīng)的輸入映像寄存器的值未被修改，用立即I/O指令寫輸出點(diǎn)值時，相應(yīng)的輸出映像寄存器的值被修改。MEASUREX 053279-02

Rexroth low pressure pump R900931138-1X/040RA 15 MB cnc R9009311381X/040RA press

Bosch Rexroth 3 842 999 016 Transverse Conveyor

REXROTH SERVO MOTOR MAC112B-0-LD-3-C/130-A-0/S005 *NO ENCODER LABEL*

REXROTH INDRAMAT PERMANENT MAGNET SERVO MOTOR MDD112D-N-030-N2M-130PB0 *WORN*

NEW REXROTH 1 525 503 475 LOAD SENSING CONTROL BLOCK HYDRAULIC/MOBILE/SENSOR

REXROTH INDRAMAT KDS1.1-050-300-W1-115 POWER SUPPLY AC SERVO CONTROLLER DRIVE #6

REXROTH INDRAMAT DDS02.1-W150-D POWER SUPPLY AC SERVO CONTROLLER DRIVE #7

REXROTH VT3000S34-R1 USPP VT3000S34R1

Rexroth hydraulic motor IT833063204

REXROTH HYDRAULIC PUMP PART NUMBER 077232521 BRAND NEW

Rexroth Electronic Hydraulic Valve Block 0FE08606OC0101

BOSCH REXROTH SPS ZS 500 USED
MEASUREX 053279-02
Rexroth VT-HNC100-1-23/W-08-L-0, Rexroth R 900760931

0510625022 - Bosch-Rexroth Zahnradpumpe

Rexroth VT-HNC100-1-23/W-08-L-0, Rexroth R 900760931

REXROTH R-ILB-S3-A14-A02 NSFP RILBS3A14A02

2FRM 6 B36-3X/16QRV R900205511 Bosch Rexroth Stromregelventil NG06 Lz.2.Wochen

REXROTH INDRAMAT ECODRIVE DKC10.3-012-3-MGP-01VRS AND ECM01.1-PB01-NN

REXROTH INDRAMAT MOTOR MKD025B-144-KG0-KN APLHA LP050-M02-25-111-000
MDD115D-N-015-N2L-130PB0

REXROTH INDRAMAT DDS02.1-W050-D POWER SUPPLY AC SERVO CONTROLLER DRIVE #1

REXROTH RK1S3X USPP RK1S3X

Rexroth R036440000, Linear Compact Modul + Alpha Planetengetriebe LP050, wie neu

REXROTH LMS Amplifier 1 ATL6LMS02 R911326351 #GR-56-9

Bosch Rexroth Indramat OP Panel IndraControl VCP20

REXROTH LMS Amplifier1 NYCP-I/O 3P 9464999 72661-ATL6LMS02 R911326351 #GR-169-6

Rexroth CDT3 32 F11 XEM

REXROTH VT 11077-24 VT11077-24 R900019669

Rexroth Indramat Servomotor MKD041B-144-KGO-KN 7500 U/min (O2)*

REXROTH VT 11077-24 VT11077-24 R900019669

Orbitrol Rexroth Lenkorbitrol R901057929 085031 10W25 LAGS400-10/LF240-M40-426S

REXROTH VT-3000-S36 USPP VT3000S36

REXROTH R911171054-101 VAC 30 CONNECTION MODULE, SIGNAL TRANSMISSION, NEW

REXROTH 081WV10P1V1005KA115/60-D51 NSPP 081WV10P1V1005KA

Bosch Rexroth CPU ZS 401 inkl. Memory Card

MKD041B-144-KG1-KN Indramat Rexroth MKD041B-144-KG1-KN

INDRAMAT REXROTH MOTEUR MAC 71A-0S-4-C/095-B-0/W|520LV/S001 NO ENCODER

Rexroth 3-Phase Permanent Magnet Motor Typ. MSK061C-0600-NN-M1-UGO-NNNN

INDRAMAT REXROTH moteur MOTOR MAC 071C-0-|S-4-C/095-A-0/D|522LX/ sn 1937

BOSCH REXROTH VT-5010-S23 R1 AMPLIFIER CARD VT5010S23R1 VT5010 S23 R1

Rexroth Indramat permanent magnet motor MKD071B-061-KG1-KN n.max.6000 min-1 Km

Bosch Rexroth Indradrive CONTROLLER CSH0.1C-PL-ENS-MA1-MD2-NN-S-NN-FW year 2011

Bosch Rexroth Indradrive CONTROLLER CSH0.1C-PL-ENS-EN2-MD2-NN-S-NN-FW year 2008

BOSCH REXROTH 2000mm LINEARFüHRUNG + ALLEN BRADLEY MPL-B220T-VJ42AA ! TOP

Rexroth MSK030C-0900-NN-M1-UG0-NNNN 3-Phase Synchronous PM-Motor -used-

INDRAMAT Rexroth ECODRIVE DKC02.3-040-7-FW mit Interface mit FWA-ECODR3-SMT-02VR

Rexroth MSK040B-0600-NN-M1-UG0-NNNN -used-

Rexroth Indramat Eco Drive Controller CZM01 3-02-07 CZM01.3-02-07

REXROTH VT-HNC100-1-23/W-08-P-0 DIGITAL AXIS control Achsensteuerung HNC100

Rexroth IndraDrive M Typ.HMD01.1N-W0036

Rexroth VT-HNC100-1-23/W-08-L-0, Rexroth R 900760931

Rexroth Schlitzzylinder RTC-DA-032-2100-BV-MMF1S00BLP000P0P0 OVP

Rexroth Indramat Bedienterminal BTA20 BTA20.3-NB-BP-VB-BS Neuwertig

Mannesmann Rexroth Elau Karteneinschub Geh?use

Rexroth Controller Card CSB01.1N-SE-ENS-NNN-NN-S-NN-FW R911305276 OVP

Rexroth Servo Motor MSK050C-0600-NN-M1-UG1-NNNN

Rexroth Profi Bus RMV04-DP Unbenutzt

Rexroth ECODRIVE Cs DKC10.3-004-3-MGP-01VRS inkl. Profibus GEB

Rexroth Hydraulikpumpe 1PV2V3-41/12 RG01MC63A1 (R5E2)

Bosch Rexroth Servodyn KM 3300-T 054915-106 KM3300

Bosch Rexroth Servodyn KM 3300-T 1070054915-302 KM3300

Bosch Rexroth SPS CL200 Magnet Roboterkarte PSM200

MANNESMANN REXROTH PVPQ-1 VT-PVPQ1-1X/0 VTS0618 + sockel

Rexroth Netzfilter HNF01.1A-M900-E0051-A-480-NNNN GEB

Mannesmann Rexroth G.A.S DR 22 S MC01.22-24V 304372 Steuereinheit

Verst?rker für 2 Regelventile Bosch Rexroth 0 811 405 083

Bosch Rexroth Messsystem R310DE2386 Kugel- und Rollens.

Rexroth Indramat Permanentmagnet-Drehstromservomotor

Rexroth Servomotor MSK040B-0600-NN-M1-UG0-NNNN Permanent Magnet Motor

Bosch Rexroth PV45-RGC1 0811 405 101 Amplifier Card , Verst?rker Karte

Siemens G26004-A3347-P102 Mannesmann Rexroth * G 26004-A3347-P102

BOSCH REXROTH INDRAMAT ECO DRIVE DKC03.3-040-7-FW + FWA-ECODR3-FGP-02VRS-MS

Rexroth 3~Phase Permanent Magnet Motor MSK040C-0600-NN-S1-UP0-NNNN

Rexroth Indramat ECO DRIVE DKC03.3-040-7-FW + FWA-ECODR3 + PBK02

DB 301 BOSCH REXROTH BOSCH DB301

Rexroth Indramat Refu Drive 500 RD51.1-4N-005-L-NN-FW Frequency Converter

Rexroth IndraDrive C Packet HCS02.1E-W0012-A-03+CSH01.1C-PB-ENS-NNN-NNN-S1-S-NN

REXROTH VT 11077-24 VT11077-24 R900019669

INDRAMAT REXROTH SERCOS CSB01.1C-SE-ENS-NNN-NN-S-NN-FW INTERFACE, NEW

MP1-HH-C REXROTH CYLINDERS REMANUFACTURED

REXROTH 4WMM10E31 USPP 4WMM10E31

Rexroth Kolbenstangenloser Zylinder Linearführung 1150

Rexroth Indramat MKD041B-144-GG0-KN Servo Motor

REXROTH 0-608-701-002 USPP 0608701002

Rexroth IndraDrive FCS01.1E-W0015-A-04-NNBV

REXROTH 4WE6J52/BW11NDALV DIRECTIONAL CNTRL VALVE W/ CHECK VALVE & MANIFOLD, NNB

Caterpillar Rexroth pump

Rexroth IndraDrive HCS02.1E-W0028-A-03-NNNN

Rexroth MSK040-46682 Magnet Motor

Rexroth Typ 0608830162 KE 300 5V-3.0A 24V-2.0A

USED Mannesmann Rexroth VT5006-S16-R5 Proportional Amplifier Card

KATT MOTOR/REXROTH ASSEMBLY , TYPE N112M , USED

REXROTH SV-25-GA-1-42/12 USPP SV25GA14212

Rexroth DKC02.3-040-7-FW DKC ECODRIVE Drive Controller 200-480V 11A Sercos QTY

REXROTH R-ILB-PB-24-DI16-DO16 NSFP RILBPB24DI16DO16

REXROTH VT3006-S36 USPP VT3006S36

Bosch Rexroth Mecman Bus Modul MNR: 3360150000

BOSCH Rexroth KE312 Communication Unit 0 608 830 241

(3210) Bosch Rexroth Directional Control Valve 9810232070 4000PSI

Lot of (6) Bosch Rexroth Star Linear Motion Guide Bearings on (2) 275mm Rails

REXROTH 1815503095 NSPP 1815503095

REXROTH VT-12000

Rexroth Amplifier Board VT5010 S22 R1 #1 11110035 233387 / 34

REXROTH VT 3017-37 #1 Mat.Nr. 00020302 R28 261946023 11110233

Rexroth Analog Sollwertmodul VT-SWMA-1-10a VT-SWMA-1-1X MNR: R900942541 2-4 #484

Rexroth VT 11550-21 Verst?rkermodul Ansteuerung Schaltventil RD 29870/ 2-4 #483

;Mannesmann Rexroth VT 11013-12 UB:24V Verst?rkermodul Steuermodul 5-2 #357

Rexroth Analog amplifier module VT-MRMA1-1-11/V0/0 MNR: R900752430 OVP 4-4 #424

MECMAN REXROTH PNEUMATIC CYLINDER ACTUATOR 63MM BORE X 28" STROKE 170-360-0280

REXROTH 1070079832-101 NSPP 1070079832101

REXROTH R900561274 USPP R900561274

REXROTH 081WV10P1V1004WS115/60-D51 USPP 081WV10P1V1004WS

REXROTH VT-5011-S43-R1 USPP VT5011S43R1

Hydromatik / Rexroth AA4V90EL1R3M2011 R909405950 Pumpen Geh?use

Hydromatik / Rexroth A4VG40EP4D1/ 32L -NZC02F095SH-S Pumpen Anschlussplatte

Rexroth Indramat Refu Drive 500 RD51.1-4N-005-L-NN-FW Frequenzumrichter

BOSCH / Rexroth Rack BT300 /VE300

Rexroth Indramat Eco Drive Controller CZM01.3-02-07 CZM01 3-02-07

REXROTH 0821401140 NSFP 0821401140

REXROTH R-IB-IL-24/230-DOR4/W NSFP RIBIL24230DOR4W

REXROTH R-IB-IL-24-DO-16 NSFP RIBIL24DO16

REXROTH VT5011-S42-R1 USPP VT5011S42R1

REXROTH 1070077639-106 USPP 1070077639106

Rexroth Proportional Wegeventil 4WRAE 10 E1-30-22/G24N9K31/A1V

Proportional valve Netstal 963.364.6106 Rexroth 4WRZ10W

Rexroth 4WEH22E40/10LW220-50NET 4WE10J4.0 Hydraulikventil

Rexroth 1PF2GU3-11/080RE07ME4 Hydraulikpumpe

Rexroth CDT3 CDT 3 MX3 2240000171 224-000-017-1 Hydraulikzylinder

Rexroth Indramat Sercos DSS02.1M 109-0852-4B01-11 NOV

Bosch CNC E-A24/0.1 056368-102401 Rexroth RH01 A203

Bosch CNC E-A24/0.1 056368-102401 Rexroth RH01 A204

Bosch CNC Servo 066747-102401 RH01 066747 SPS Rexroth

Bosch CNC E-A24/0.2 068347-101401 Rexroth RH01 068347

Sicherheitsventil Arburg SN 92311 Rexroth LS1186X130-10

BOSCH REXROTH SPS NT 301 USED

Rexroth Mecman Pneumatik Cylinder 523-791-060-0

REXROTH HAT01.1-002-NNN-NN ELECTRIC DRIVE INPUT: 24VDC 6A OUTPUT:24VDC, NEW

REXROTH PSK60-1465-300-00-MF01-11 USPP PSK60146530000MF

REXROTH PSK60-1465-300-00-OF01-11 USPP PSK60146530000OF

B-IO 4Ai_Uit 1070080526 Bosch Rexroth B~IO 4AI_UIT 1070080526-101

REXROTH INDRAMAT 109-0852-4B01-11 BOARD 10908524B0111

Rexroth Indramat MKD090B-047-KP1-KN Permanent Magnet Motor

NEW REXROTH MSM030B-0300-NN-M0-CG1 SERVO MOTOR MSM030B0300NNM0CG1

THREAD-CRAFT REXROTH R150346206 7210 58622.11 B. SCREW

Mannesmann Rexroth Hydraulic Pump 1PV2V5-31/16RE01MC/0A1-A187

Rexroth Mannesmann Hydraulic Valve 4WRA 6 E20-11/24Z4/M 4WRA6E201124Z4M New

Bosch Rexroth Analog Controller PE 100_0 608 830 093_0608830093_0-608-830-093

REXROTH BOSCH CYLINDER ME6-HH 6x.62 3000 PSI

REXROTH A10V100 ROTATING GROUP RH 948603/906871 or LH 907681/948604

Rexroth VT2000 Proportional Hydraulic Card

Rexroth Bosch 0 608 701 002, 0 608 720 053, 0 608 720 053, 0 608 820 071 system

NEW REXROTH R900910785 R900966552 DIRECTIONAL SOLENOID HYDRAULIC VALVE D258991

REXROTH VT-VSPA2-50-10/T1 CARD VT-VSPA2-50-10

Motion Industries R160530331 1,916.0MM 38mm Rexroth Bosch Linear Bearing Rail

Rexroth A10VSO18DFR1/31RPKC62K01S020 Hydraulic pump

Rexroth A10VSO18DFR1/31RPUC62K01 Hydraulic pump

Bosch Rexroth Linear Bearing Rail Guide Star R160710431 2,096mm 28mm 28mm

Rexroth DKC02.3-040-7-FW IndraDrive C Servo Drive DKC02.30407FW

REXROTH 4WRZ32W3-520-31/S0204R PROPORTIONAL DIRECTIONAL HYDRAULIC VALVE B434293

Indramat Rexroth 237117 Permanent Magnet Servo Motor

Rexroth Pump

MANNESMANN REXROTH 4WE6R6X / EW110N9Z45 *USED*

REXROTH 4WE6R6X/EW110N9K4 *USED*

REXROTH 4WRE6EA32-12/24K4/M *USED*

BOSCH REXROTH VALVE 9810231481 NEW

REXROTH INDRAMAT 109-0942-4B45-02 BOARD NEW

REXROTH INDRAMAT 109-0785-3B17-09 BOARD NEW

NEW REXROTH HYDRAULIC VALVE # 4WRE6W16-20/G24K4/V, # R900944121

Rexroth Indramat CLC-D02.3 PC Board

INDRAMAT REXROTH POSITIONING INTERFACE DLF1.1 *TESTED*

Rexroth Indramat DSS1.3 DSS01 Module Card new

Rexroth Indramat DSS03 DKC2.1 DKC Card new

OFFER&WIN - BOSCH REXROTH 1070084008-105 IBS OPC BOARD MODULE

Indramat Rexroth CTA10.1B-001-FW Keypad new

REXROTH SE302 CONTROLLER 0 608 830 161

REXROTH * MOTOR W/O CABLE * 0-608-820-103

Bosch Rexroth Indramat HNK01.1A-A075-E0080-A-500-NNNN Power Line Filter NIB

REXROTH 5610105010 PRESSURE RELIEF VALVE

Bosch Rexroth 0 608 830 161 Controller, 5V-1.7A, 24V-2.0A

Rexroth Bosch 30" Servo Motor Precision Linear Motion Axis Positioner R146530000

BOSCH REXROTH SYSTEMBOX SB305 WITH 0 608 830 207 SYSTEM RACK NEW

NEW BOSCH Rexroth 0821400234 Air pressure Distributor

REXROTH INDRAMAT ECODRIVE Cs DKC10.3-018-3MGP-01VRS ( FWA-ECODR3-MGP-01VRS )

HYDRONORMA GP35 4-A 104 REXROTH 02049 2655 T74 16-02-052-904 HYDRAULIC VALVE

REXROTH INDRAMAT DDS02.1-W100-D POWER SUPPLY AC SERVO CONTROLLER DRIVE #21

REXROTH INDRAMAT DDS02.1-W100-D POWER SUPPLY AC SERVO CONTROLLER DRIVE

REXROTH PUMP

New Rexroth Solenoid and Valve R900938585 FD:78725 4WEH16E72/6EW110N9ETS2K4

Rexroth Brueninghaus Hydromatik Hydraulic Pump A10VSO 18DRG/31R-PKG62N00

NEW RACINE REXROTH FF1-SHMM-06H HYDRAULIC CHECK VALVE FF1 SHMM 06H 12 975090 84

NEW LISTING Rexroth Proportional Valve

#53 Rexroth Servo Interface 8-Port Module APRB01-02 257327 OBSOLETE

Up for sale Bosch Rexroth MNR: R978003894 4WE6T61/EG24N90A/V you are buying 3e

REXROTH INDRAMAT DDS2.1-W150-D POWER SUPPLY AC SERVO CONTROLLER DRIVE #8

Rexroth Indramat Refu Drive 500 RD51.1-4N-005-L variateur de fréquence.Neuf

Rexroth Indramat Refu Drive 500 RD51.1-4N-005-L Convertitore Di Potenza

Rexroth Indramat MKD071B-061-KP1-KS Servomoteur de robot Dürr

Rexroth Indramat MKD071B-061-KP1-KS Servomotor De Un Robot

REXROTH 4WRE-6W08-12/24K4/M VALVE 4WRE6W081224K4M

Bosch/Rexroth Nutrunner Spindle 0-608-701-003 / 0-608-820-075 Torque Transducer

New Rexroth Z4WE6E63-31/EG24K33LQMAG24 Safety Valve

USED REXROTH DRE 30-42/200Y SOLENOID VALVE,GV45A4-A 20051209 01,185VDC, 8A BJ

Rexroth Communication Module 0 608 830 241 #55122

Rexroth Valve Flow Control FE 25 C 10/LM #2718

NEW OLD REXROTH DBDH10P16/315/12 PRESSURE RELIEF VALVE FL

Rexroth Valve R978912818 #51892

REXROTH 4WRA6E20-11/24NK4/M HY-PROPORTIONAL DIRECTIONAL VALVE RR00009279 NEW

NEW REXROTH MORRELL MC2005-10-006-01-084 SERVO CABLE 668884 REV B

NEW REXROTH MORRELL MC2005-10-006-01-054 SERVO CABLE 668903 REV B

NEW REXROTH 0821302050 PNEUMATIC PRESSURE REGULATOR BB

BOARD 1070084575-103 REXROTH, 09W35 1070086601-103, 08W22E

BOARD 1070090536-201 REXROTH, 08W33 1070090535-203

BOARD REXROTH 1070088226-204, 07W41E, 1070088225-206, 08W03

NEW OLD REXROTH R900599586, SL 20 PB 1-42, 05W28 HYDRAULIC CHECK VALVE FJ

Rexroth R005517586 Linear Actuator, Danaher Motion DBL2H00040-0R2-000-S40 Motor

REXROTH P-032024-00125 NSFP P03202400125

Rexroth Indramat Refu Drive 500 RD51.1-4N-005-L Frequency Converter

REXROTH P-031590-00000 NSFP P03159000000

REXROTH R-415-000-149 NSFP R415000149

   Foxboro P0971SU.C 10FT 70-Series WS Cable P0971SU - NEW