可編程序控制器,英文稱Programmable Controller,簡稱PC。但由于PC容易和個人計算機(jī)(Personal Computer)混淆,故人們?nèi)粤?xí)慣地用PLC作為可編程序控制器的縮寫。它是一個以微處理器為核心的數(shù)字運(yùn)算操作的電子系統(tǒng)裝置,專為在工業(yè)現(xiàn)場應(yīng)用而設(shè)計,它采用可編程序的存儲器,用以在其內(nèi)部存儲執(zhí)行邏輯運(yùn)算、順序控制、定時/計數(shù)和算術(shù)運(yùn)算等操作指令,并通過數(shù)字式或模擬式的輸入、輸出接口,控制各種類型的機(jī)械或生產(chǎn)過程。PLC是微機(jī)技術(shù)與傳統(tǒng)的繼電接觸控制技術(shù)相結(jié)合的產(chǎn)物,它克服了繼電接觸控制系統(tǒng)中的機(jī)械觸點(diǎn)的接線復(fù)雜、可靠性低、功耗高、通用性和靈活性差的缺點(diǎn),充分利用了微處理器的優(yōu)點(diǎn),又照顧到現(xiàn)場電氣操作維修人員的技能與習(xí)慣,特別是PLC的程序編制,不需要專門的計算機(jī)編程語言知識,而是采用了一套以繼電器梯形圖為基礎(chǔ)的簡單指令形式,使用戶程序編制形象、直觀、方便易學(xué);調(diào)試與查錯也都很方便。用戶在購到所需的PLC后,只需按說明書的提示,做少量的接線和簡易的用戶程序編制工作,就可靈活方便地將PLC應(yīng)用于生產(chǎn)實(shí)踐。
可編程序控制器一直在發(fā)展中,所以至今尚未對其下*后的定義。際電工學(xué)會(IEC)曾先后于1982.11;1985.1和1987.2發(fā)布了可編程序控制器標(biāo)準(zhǔn)草案的,二,三稿。
在第三稿中,對PLC作了如下定義:可編程序控制器是一種數(shù)字運(yùn)算操作電子系統(tǒng),專為在工業(yè)環(huán)境下應(yīng)用而設(shè)計。它采用了可編程序的存儲器,用來在其內(nèi)部存儲執(zhí)行邏輯運(yùn)算、順序控制、定時、計數(shù)和算術(shù)運(yùn)算等操作的指令,并通過數(shù)字的,模擬的輸入和輸出,控制各種類型的機(jī)械或生產(chǎn)過程??删幊绦蚩刂破骷捌溆嘘P(guān)的外圍設(shè)備,都應(yīng)按易于與工業(yè)控制系統(tǒng)形成一個整體、易于擴(kuò)充其功能的原則設(shè)計。
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170MCI00700 NEW SEALED Modicon Interbus-S Conn 170-MCI-...
ASBDAU204 NEW Modicon Compact Analog OUT AS-BDAU-204
140CPU67160 Used REfurbished Modicon CPU 140-CPU-671-60
ASBADU206 NEW Modicon Compact Analog Input AS-BADU-206
140CPU43412A Excellent Tested Modicon CPU 140-CPU-434-1...
ASBDEP220 Used Guaranteed Modicon Discreet Input AS-BDE...
140CPS11420 NEW Modicon AC Power Sply 140-CPS-114-20
140CRA93100 Modicon Quantum RIO Drop 140-CRA-931-00
490NRP95400 FACTORY NEW Modicon Fiber Repeater 490-NRP-...
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140CPU53414A Used Excellent Modicon CPU 140-CPU-534-14A
ASBDEP216 Used Modicon 16 Discreet IN AS-BDEP-216
140DDO84300 Used Modicon DC Out Source 140-DDO-843-00
140DDI85300 TESTED and Guaranteed Excellent Modicon DC ...
ASB875002 TESTED EXCELLENT Modicon Analog INPUT Module ...
170AAI03000 TESTED and GUARANTEED Modicon Momentum Anal...
140CRP93200 Used TESTED Modicon RIO HEAD Module 140-CRP...
ASBDAU202 TESTED Modicon / Schneider Analog Output Modu...
TWDLCAA24DRF Modicon Schneider Telemecanique Twido Modu...
140CPU43412A NEW Sealed Modicon CPU 140-CPU-434-12A
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ASBDAU204 NEW ORIGINAL BOX Modicon Compact Analog OUT A...
PC-E984-265 NEW Modicon Compact CPU PCE984265
ASB875111 Modicon Analog Input Module AS-B875-111
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140EHC20200 Used Modicon High Speed Ctr 140-EHC-202-00
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140XTS00200 NEW Modicon Quantum Term 140-XTS-002-00
140DRA84000 NEW Modicon Relay OUT 140-DRA-840-00
140DDI36400 Used Modicon DC In Module 140-DDI-364-00
140NOE77101 Modicon NEW FACTORY SEALED Ethernet 140-NOE...
140DRA84000 NEW FACTORY SEALED Modicon Relay OUT 140-DR...
PCE984385 Used GUARANTEED Modicon Slot Mount CPU PC-E98...
140EHC20200 NEW Modicon High Speed Ctr 140-EHC-202-00
140DAI55300 NEW SEALED Modicon Quantum AC IN 140-DAI-55...
140XBP00600 Modicon Quantum 6 Slot Back 140-XBP-006-00
140CPU65150 NEW FACTORY Sealed Modicon CPU 140-CPU-651-...
170AMM09000 Used Tested Modicon Momentum 170-AMM-090-00
140DDO35300 NEW SEALED Modicon DC Output 140-DDO-353-00
140NOE77111 Modicon Excellent Ethernet 140-NOE-771-11
PC-A984-130 Used Modicon Compact CPU PCA984130
140CPU53414B Used Excellent Modicon CPU 140-CPU-534-14B
AS8535000 Used Modicon Connector AS-8535-000
PCE984685 Used FULLY TESTED AND GUARANTEED Modicon Slot...
140ACI04000 USED EXCELLENT Modicon Analog IN 140-ACI-04...
140AVI03000 NEW Modicon Analog Input Module 140-AVI-030...
170CPS11100 Modicon NEW Momen Pwr Sply 170-CPS-111-00
416NHM21200 Used Modicon PCMCIA MB+ Adap 416-NHM-212-00
140DRA84000 NEW Factory Box Modicon Relay OUT 140-DRA-8...
140ARI03000 Used Modicon RTD IN 8CH 140-ARI-030-00
TSXASZ200 TESTED Modicon Micro Analog Output Module TSX...
170XTS00200 Modicon Momentum Spring Type Terminal 170-X...
140CPS11100 Used Modicon Power Supply 140-CPS-111-00
490NRP25400 Modicon Fiber Line Drop Repeater 490-NRP-25...
140CPU42402 Used TESTED Modicon Quan CPU 140-CPU-424-02
TSXP573634 Excellent Modicon Unity Premium CPU TSX-P574...
140AVO02000 Modicon Quantum Analog Out 140-AVO-020-00
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ASM84A002 Perfect Modicon Controller Module AS-M84A-002
140ACO13000 NEW SEALED Modicon Analog OUT 140-ACO-130-0...
Speed Counter AS-BZAE-204
140XBP00600 BRAND NEW Modicon Quantum 6 Slot Back 140-X...
PCE984251 Excellent Modicon Compact CPU PC-E984-251
140CPU11303 NEW SEALED Modicon Quan CPU 140-CPU-113-03
AS8534000 NEW Modicon Connector AS-8534-000
PCO984785 PERFECT Modicon CPU PC-O984-785
DL1BDB3 Brand New Telemecanique LED Cluster Green
ASBDAP216N Modicon A120 IO DC OUT 16 pt AS-BDAP-216N
140DRC83000 NEW Modicon Relay OUT 140-DRC-830-00
ASBDAP216 NEW Modicon Compact Out Module AS-BDAP-216
110CPU51200 Modicon Micro Controller 110-CPU-512-00
170ENT11000 Used Excellent Modicon Momentum Ethernet Mo...
8020SCP401 SYMAX Modicon NEW Model 400 Processor 8020-S...
170ENT11002 Modicon Momentum Ethernet 170-ENT-110-02
8010CC106 NEW SqD PowerLogic Sy/Max Cable 8010-CC-106
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140CPU31110 NEW Modicon Unity CPU 140-CPU-311-10
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170ADO35000 Modicon DC Discreet I/O Base 170-ADO-350-00
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170ADM35011 Modicon Momentum I/O Base 170 ADM 350 11
140CPU11302 NEW Sealed Modicon QuanCPU 140-CPU-113-02
TSXCBY010 Modicon Premium Cable TSX-CBY-010
ASB371001 Modicon BCD Register Input Module AS-B371-001
990NAD21130 New Modicon MB+ Cable 990-NAD-211-30
ASBDEP256 NEW Modicon Compact Discreet Input AS-BDEP-2...
140CPS12420 EXCELLENT CONDITION Modicon Power Supply 14...
140DAO85300 New SEALED Modicon AC Out Module 140-DAO-85...
170ADI35000 NEW Modicon DC I/O Base 170-ADI-350-00
ASBDEP218 NEW Modicon 16 Pt 115VAC AS-BDEP-218
AS-BADU-205 Modicon Compact Analog Input ASBADU205
140DAO84000 Used Excellent Modicon Quan AC OUT 100 140-...
TSX3722101 TESTED Modicon Micro Base Module TSX-3722101
TSXETY4103 BRAND NEW Modicon Premium TCP/IP Module TSX-...
TSXMRP032P Schneider Modicon Ram Memory Card Used TSX-M...
AS-BDEP-209 Used Modicon Compact AC IN Module ASBDEP209
140CPS22400 Modicon Power Supply 140-CPS-224-00
TSXMRPC001M Modicon Premium SRAM Memory TSX-MRPC-001M
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TSXDSY32T2K NEW Modicon Premium Output TSX-DSY-32T2K
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140XTS00203 Used 3' Modicon Cablefast 140-XTS-002-03
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170PNT11020 Used Excellent Modicon Momentum IECModule 1...
ASBDEP215 Used Modicon INPUT MODULE 16 POINT 5V TTL AS-...
ASB231 ASB231001 Used Modicon Input Module AS-B231-001
ASB248 ASB248501 Used Modicon Output Module AS-B248-501
TSXSAY100 Used Modicon Premium AS I Module TSX SAY 100
140ERT85400 Modicon NEW Smart DC In 140-ERT-854-00
140DAI54300 NEW FACTORY SEALED Modicon Quantum AC IN 14...
170BDI54250 Used Tested Modicon Momentum 170-BDI-542-50
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ASW808002 Excellent Modicon Cable Assembly AS-W808-002
140CFG01600 BRAND NEW Modicon Cablefast 140-CFG-016-00
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ASM84A001 Gould Modicon Controller AS-M84A-001
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499NES18100 NEW Modicon / Schneider ConneXium 8TX 10/10...
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