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251301DRDR8OGF
YOGKAWAF3YD641
GEBOARD44A398773-G01
A06B-6087-H130
SIemensVL1250
3HAB7230-1
RexrothMKD112B-048-GP0-BN
TSXDEZ32D2
AS-B460-001
在学习PLC书本知识的过程中,对许多指令不是很了解,如果您没有一一解决的话,那么这将是您学习PLC的最大障碍.因此在PLC的学习过程中,您可以依据书本知识,对所学之指令进行实际应用,逐一攻破.这样,您的PLC知识不但会学得牢固,而且在学习的过程中您已经学会了实际使用.
近几年来，可编程序控制器(PLC)以其可靠性高、适应性强、灵活性好、编程简单、容易掌握等特性，在各个领域发挥越来越重要的作用。在PLC控制系统中，PLC作为主要控制设备，必然与控制对象中各种输入信号(如按钮、限位开关、拔动开关、继电器的触点及其它检测信号等)和输出设备(如继电器线圈、接触器线圈、电磁阀等执行元件)相关联。在实际工作中，由于受PLC应用系统规模的限制，PLC输入/输出点数往往不够用。为此若采用扩展输入/输出单元或更换点数更多的PLC来解决有时又不合算，为了降低系统硬件的成本，常常采用各种技巧减少系统占用的输入/输出点数，相当于扩展了PLC的I/O点数。本文从硬件、软件两个方面介绍在不增加硬件情况下"扩展"PLC I/O点数的几种方法。
接触器的线圈电压，一般应低一些为好，这样对接触器的绝缘要求可以降低，使用时也较安全。但为了方便和减少设备，常按实际电网电压选取。
3HAC020813-165
台湾泓格i-87017
1492-SPM1C400-N
三菱MDS-A-V1-35
6EC1000-3A
6ES5373-0AA41
ALLENBRADLEY1492-K2TUSPP1492K2T
ALLENBRADLEYPANELVIEW900OPERATORINTERFACE2711-K9A1SER.EREV.A
S-67106
1336F-B015-AJ-EN-L6
ABBCS31ICSE08B5
MSK060C-0300-NN-M1-UGO-NNNN
A16B-2201-0103
发那科A16B-1211-0920
DSQC6513HAC025784-001
2711P-T12C6B1
ABB开关电源X511A-R5
VDI9902B
140XTS10206
R911295326
ABISOLATEDOUTPUTMODULE120VAC120V1771-ODZ1771ODZ1771ODZ
1756IB32
3HNA011391-001COVERBASE
MKD090B-035-KG1-KN
140CRA21120C
TK-FXX10210slotchassis,coated,13amp
7ME3950-2HU21
ALLENBRADLEYPANELVIEW2711-T14C32711T14C3
140DDO35300
MP3008
VDI96764
METTLERLC-P45
ALLENBRADLEYPANELVIEW10002711-B5C10SER.CFRN.4.44
3HAC020813-082
87DH7201X1-A4COMMONRAM1
2-822037-A
PC832-001-T
170ADI34000施耐德模块
ABBACS600NIOC-02C
BMXDDO1602
HoneywellTC-OAV081
SEWMPB51A027-503-008260753
AllenBradley2711-T5A16L1/B|PanelView550
8xTENPACKSOFCORNING3056.25cm2CULTUREFLASKS.
3HAC17484-10
MasterguardA700供应商
ABPOWERMODULE40382-074-53
AllenBradleyPanelViewPlus6002711P-T6C8D/B2711PT6C8D
IC610CPU104C
6DS1322-8BA9
140CPS11420C
1336F-BRF30-AN-IT
MM-PMF2-2400
1336F-A007-AJ-EN-L6
IC660EBA101RR
AllenBradley190-CPS40BCoordinatedProtectedStarter
施耐德TSX08H04M
2711E-T10C6
1394C-AM75-IH
1785-L60B
AMICONCENTRICONPLUS-80UFC5LGC08CENTRIFUGALFILTERD
XBTZ948
AS-E381-902
西门子CPU板卡型号：SMP-E129
ALLENBRADLEYPLC-5HARDWAREINSTALLATIONMANUAL
TSXP572623M施耐德
SERIESF,REV.L,FRN4.20
DSQC228
4102560601AB4102560601
ALLENBRADLEY2711-K5A16PV5502711K5A16FRN4.20
ALLENBRADLEY2711-K9C15USPP2711K9C15
AllenBradleyPanelviewLED10002711-NL42711-T10C20
3HAB2725-1
140ATI03000
YASKAWA安川伺服马达SGM-02A312
CACR-HR20VBCY119
AllenBradley2711-T10C8/B|PanelView1000
TWDFST20DR10
MU-TAOX02
IC693CHS399LT
BoschCNCPS200PowerSupply052910-309110Neuwertig
Q0300CSAddAP51/AW51SWDispOrDataForWind
霍尼韦尔电源模块900P01-0001
TSXCSA500
编号Cat.descrtptionPartNO.
1746-OB32
K0173NAInstrumentGateway10SWPkg(V3.x)
AS-B883-201现货专卖
安川伺服驱动器SGDH-02AE带有NS600模块功能
P0999YYF-PorterToAW70AAdvUpgradeSWLic
1757-FIM
ABSALARM2AX+ALM-AR*NEW*
AB1794-AENTR模块
3HAB5171-2
140XBP01600C
Adept101
1771-FE
6ES7357-4AH01-0AE0
VDIA-50150V
GEFANUCIC693PCM311
7794SANITARYDURAFE
110-0092
ALSPA驱动板KCC9505KCC9323
BOSCHServodynVM60-T1070077371-105VM60-T
PolielettronicaPoliDIMPPO
140G-MTF4-D80
西门子6ES7951-0KF00-0AA0
西门子6ES7315-2EH14-0AB0
IC646MBLS99
1336F-AQF05-AN-EN
AllenBradley2711-T6C16L1/BPanelView600Touch/Color/RS?-232(DF1)/RS-2?32-Print
SEWMM07D-503-000.75kw变频器
RELIANCEELECTRIC0-57404-3A/57C404C
elettronice34-VB
NEWREXROTHCONTROLVALVEYC-11092-BAE4010BR409018119222585R33217958440
1756-L55M14
Allen-BradleyPanelview900Cat#2711-K9A1#706HT
57C410A代理商
HNL01.1E-0170-N0146-A-NNNN
1772-DQ
Allen-BradleyPanelview900_2711-T9C9_?2711T9C9SeriesC
SNAP-B16MCP
MINT?YASKAWA?VS?MINI?J7?CIMR-J7AA23P7?CIMRJ7AA23P7
K0175NBABDataHighwayGateway,RedundantSWPkg(V4.3)
意大利ANSALDO模块SPAM050U1D
Q0300APINT30SWPkgV4.xRieterMODBUSSlave
TP276AV3627-1NK00-2AX0
西门子6ES7331-7SF00-0AB0/6ES7331-7SF00-0AB0配包装!!
HONEYWELL霍尼韦尔板卡型号：56002201-100
TSXSUP1021
MOELLERPS416CNT-200
1785-L80C15
6ES5430-4UA12或6ES5430-4UA12板卡
SWA-MTX-SED-05VRS-ZH-CD650R911317282
3HNA016215-001ADAPTER
IC697HSC700
西门子G85139-E1721-A841
TSXP57353M
Pre数字量组合模块TSXDMY28RFK
3HNP00311-5CONPLUGSOKTCCS
6ES5941-7UA12
1FK7034-5AZ91-1ZZ9-Z电机
HONEYWELL621-0021-RCENHANCEDDIAGNOSTICSMODULE
7XR6004-0CA00
1756-OB32
DXE-316C电机
绝缘环filamentinsulator17248080GSD
MVME133
ABPLC1756-CNB
B&R-7DI435.7
DDS02.2-W200-B
1442-PS-0550E0010N
3HAC10939-6
CIMR-MR5N2015 CIMR-MR5N2022 CIMR-MR5N20225
MA-0329-001
1757-SRM
MDX61B0008-5A3-4-0T
1336F-A050-AN-EN
3HAC020847-001
SA-B853-016
1C31113G03OvationModule+/-100mVAnalogInputElectronicModule0
Bently82366-01
3HAC020046-003
MOTOROLA摩托罗拉MVME117A1
MAC093A-0-PS-4-C/110-A-0/WI538/S001
VARIANASSYE11130350
VDI7777F
6DR2100-5
FOXBORO福克斯波罗P0400ZG1
2707-MVP2320
1C31129G031C31132G01
TSX07321028
Q0300LYDI304.0/4.1MooreMycro320/352
1756-L55M14
ALLENBRADLEYPV+2711P-T15C6A22711PT15C6A2
AB-31203-CN1
1C31129G03现货
TSXCDP203
3HNA010669-001ADAPTOR
1756-OW16I
1336F-A075-AA-EN
100-C30K10
TSXACZ03
SGMG-44VSA AC
ER-FC-2048D
1C31113G02
ABB直流备件：SDCS-CON-3A
160BMB1AB160BMB1
A06B-0031-B075#7008
IC697CHS790
ALLENBRADLEY1494F-NF60NSFP1494FNF60
ALLENBRADLEY2711-T9C32711T9C3PANELVIEW900
3BSC950194R1
AMSA85002莫迪康
IC200CBL120
XY-L3142AD
施耐德STBNC02212
ABPLC1771-ASB/B(1771-asb/c)
140G-M-EOPJ
AllenBradley2711-K5A12711K5A1Panelview550
AllenBradley2711-B5A2/HPanelView550Monochrome/Tou?ch/Keypad/DH-4?85
OMRONE2EL-X2F1-DSLNSPPE2ELX2F1DSL
3HNA014675-001CABLEA0.X110-CONN.BOX
AS-B883-111
6FC5357-0BB33-0AE1
JAMSC-B2808T
ARCNETPCA66-CXB1
3HAC16831-1
MAC-0250-0-QS-4-E/040-B-0/WI652LV/S001
E3Z-T612MBYOMC
AeroflexFMAM15001
安川伺服驱动器SGDM-10ADA/安川伺服电机/安川变频器
6ES7322-1BH01-0AA0
KEBAD032/B
170PNT16020
AllenBradley1336-SN-SP6A74103-216-51
ALLEN BRADLEY 849-ZOD337 NSFP 849ZOD337
AS-509P-003
1756-OF8
XC17256DVIXilinx
6AV3515-1EB01
TRICONEX09191141BOX#04
3HAC035897-001SwingPlatewithmech.Stop
2711-K6C16L1
140DDI35300C
140DDO35301
西门子6AV3637-1PL00-0AX0tp37
ABBDSTA131卡件
DSQC3443HAB7686-1
1336F-A020-AA-IT
7KE3188-0AC22-0BY1
6FC5357-0BY21-1AE1
XTEAWT-0-5B3-R30-F0CREELTD
DSQC266A
1756-PA75R
1336-BDB-SP39D
1492-GS1G020-H1
3HNA012952-001O-RING
CIMRE7U47P5
XVME-530
3HAC024826-019
欧姆龙CS1G-CPU44-V1+CS1W-SCB21通讯端口
1336F-AQF20-AE-DE
TSXDEY32D2K开关量输入，32点，24VDC，HE10高密端子
台湾泓格I-87017-G
P0911NN105MbHardDisk
5X00070G04
3HNA009038-001GASKEThttp://www.zxdadsqc.com/
AB1746-OVP16
SIEMENS6AR1502-0AA00-0AA01
OVATIOND920801G18
FOXBORONCNIP0972PP5
140ARI03010
22A-D4P0N104
ABSLC500Rackw/Monitor2707-M232P3(4269)
3HAB6444
AllenBradleyAB210012"FusedSize130AMCCBucket
AllenBradley1492-WG10
Simatic6ES5700-2LA12
MSI-SDK
LUST变频器
西门子A5E00250753-01
OMRONCQM1-OA221NSFPCQM1OA221
DSQC119
KCP2
87.201.552-01B模块
PU515
3HNA003855-001PAINTDISTRIBUTOR
1757-SRM
F6217
4DP7APXDH11
51304453-150FTA,HLAI/STI,CompTerm,CC
A20B-2101-0020发那科
DSQC236T
AllenBradley1734-IM2SerC（358）
KEYENCEOP-83180支架
VDIX2905
1747-L543/B
JBAM-X004.0安川模块
SIEMENS6DR2100-41
P0912DUPWExternalTapeDrive
P0998AVAW51BAB30FTMIWBundledSolution-240Vac
3HAC020813-082
140M-J8E-D10
1784-PCMK/B&1784-PCM4AB1784PCMK1784PCM4ReadDeSCRJPTion
7NY1010-0AG1
AS-BDEP-218
XANTREX300-2
B-202-C-21
MVI56-MCM
MAFD100D-0150
3HAC020843-001
CP451-101横河CS3000DCS卡件
IC697CPX772
6ES7715-1BB23-0AD1
1C31234G01
FORCESPARC/CPU-5TE/16-85-0
ABPOWERMODULE40382-074-53
SDU24-DB9
OXIDEPEDESTAC卓凯电子0591-62182520JAMSI-B10311
140XTS00200
140CPU53414A
140ACO02000优势促销
TOSHIBAPLCEX10-MAO32
A-BAB1771IADB120VAC/DCInputModule1771-IAD-B
3HAC020813-082
110-0222
LMC211AE-MM7
XPGBWT-L1-2B0-R5CREELTD
MODICONAS-B883-001
VDI9945
AM-0984-Q30
AS-B829-016
1756-PA72
MSK061C-0200
81013841变频器
1336F-B600A-AA-EN
505-6660B
ABBQHFT-200F线路板2块
NEWALLEN-BRADLEY2711-NM2EEPROMCHIPSET1200CONFIG
3HNA012212-001FIBERCABLEASSEMBLY
MVI56-CSC
HoneywellTK-IOLI012
IC697ACC801
MC31C005-503-4-00现货
3HNA003561-001CABLELVA2.X200-CASCADE,SPARE
140DDM39000
Moog304-235
1756-DNB
2711P-T12C15B1
140CPS12420
SX6-DRIVE
3HAC020988-008
1492-MW9X24
DSQC3263HAB2242-1
7ME5805-0AB34
VMIVME-1182
3HNA007250-001CABLENAMURPROX.SWITCH
6ES5555-0DS11
12NEWAllenBradleyABPotentiometersJA1N
A06B-0114-B103
ABBNINT-45/带BSM25GD120DN2模块
AS-BVIC-212
MC07A055-5A3-4-0008272549
ALLENBRADLEY2711-NR5TNSFP2711NR5T
SQUARED8030-CRM222I/OINTERFACEMODULE
20BD027A3NYNARB0
1336F-A007-AJ-EN-L6
AS-B840-000
ABPV+10002711P-T10C4A12711PT10C4A1NIB
3HAC3462-1
ABC-PDP
1771-OBD现货
MODICON莫迪康按键屏或触摸屏型号：XBTF011310
XPEWHT-L1-1R0-R2CREELTD
P0970KERS423Cable,DNBITo50Processor,6Ft
IC697VDQ120
ABBCL-LMR+CL-LER
A16B-1310-038
FBM20729套
J0200VSSequenceOfEventsRecording&ReportingSWLic
BCLL11
SEW31C040-503-4-001
BoschCNCPS200PowerSupply052910-309110Neuwertig
西门子70系列陶瓷片475484.5000.01
140ACO02000
1336F-C200-AA-EN
6SE7034-6EE85-1JA0板卡
W801-006
6EP1334-2AA00
K0173GTDeviceMonitorSWPkg(V3.x)
3HAB4252-1/0
140CRP93200
SIEMENS西门子QLVIMBCN1
6FC5357-0BB33-0AE1
7ME3950-1HT00
6DR2100-5
3HNM11698-1
GHS2020001R01042-polautomaticfuse
AllenBradley2711-K3A10L1PanelViewMicro300
PS02-3001V5.00
140XTS00200
3HAC020843-001
FANUCA20B-2900-0841/?01A
7ML1930-1FM
AllenBradleyPanelView2711-M3A18L1MembraneKeypadNEW
MPR52A025/503-00
1394C-SJT22-C-RL
P0940DRMICRO-I/ALocalCable,I/AFieldbus
ALLENBRADLEY1756-IB16FNFP1756IB16
1793-IE4S
RS-232C
3HAB3257-1Damper
7XV5662-0AA00
3HAC14279-1
ALLENBRADLEY1771-OA1771IADOUTPUTINPUTMODULE
FBM237
DUXHFPP-PIC8主板
140DAI75300C
140G-M5X4
ABBDCSCI520/3BSE001800R1
SIEMENSC98043-A1045-L3
TK-IDX161
X20BM11贝加莱
ALLENBRADLEY2711-K6C9USPP2711K6C9
7ND4800-7AA
AB1415-N53NSFP1415N53
7MB1943-2AB20
TDM1.2-100-300-W1
MDD071C-N-060-N2G-095GBO
TC-IDJ161DCInputModule24vdc16pt(isoltd.),CIOM-A
3503E
1756-IA16I
Q0300FYAIM*DataLinkQuantity20
1336F-C150-AN-EN-L6
3PS754.9
FOXBOROFBM06P0400YGfbm6
AS-E490-904
DSQC327A
TSX3708056DR1
CIMR-AB4A0675供应商
1336F-BRF50-AJ-IT
7ME3950-1SK20
发那科A860-2005-T301
FANUC发那科A20B-1001-0051
UGRMEM-01SNQ12
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