描述
近幾年來,可編程序控制器(PLC)以其可靠性高、適應(yīng)性強(qiáng)、靈活性好、編程簡單、容易掌握等特性,在各個領(lǐng)域發(fā)揮越來越重要的作用。在PLC控制系統(tǒng)中,PLC作為主要控制設(shè)備,必然與控制對象中各種輸入信號(如按鈕、限位開關(guān)、拔動開關(guān)、繼電器的觸點及其它檢測信號等)和輸出設(shè)備(如繼電器線圈、接觸器線圈、電磁閥等執(zhí)行元件)相關(guān)聯(lián)。在實際工作中,由于受PLC應(yīng)用系統(tǒng)規(guī)模的限制,PLC輸入/輸出點數(shù)往往不夠用。為此若采用擴(kuò)展輸入/輸出單元或更換點數(shù)更多的PLC來解決有時又不合算,為了降低系統(tǒng)硬件的成本,常常采用各種技巧減少系統(tǒng)占用的輸入/輸出點數(shù),相當(dāng)于擴(kuò)展了PLC的I/O點數(shù)。本文從硬件、軟件兩個方面介紹在不增加硬件情況下“擴(kuò)展”PLCI/O點數(shù)的幾種方法。
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主營:世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
ALLEN BRADLEY 1336-B025-EOF-L1-S1 USPP 1336B025EOFL1S1
ALLEN BRADLEY 1336-MOD-FA2 NSFP 1336MODFA2
ALLEN BRADLEY 1336-B020-EOE-L3 USPP 1336B020EOEL3
Allen Bradley 1336 Plus Sensorless Vector Drive
Allen Bradley 1336 Plus Sensorless Vector Drive
ALLEN BRADLEY 1336 PLUS 1336S-EN MOTOR DRIVE CONTROL
ALLEN BRADLEY CAPACITOR 1336-CAP-SP11A*NEW*
Allen-Bradley 1336-MOD-KB0005 Dynamic Brake Unit
ALLEN BRADLEY 1336-B020-EAE-FA2-L3-S1 USPP 1336B020EAEF
Allen-Bradley 1336 Plus 1336S-BRF75-AE-EN4-HA2 AC Drive
ALLEN BRADLEY 1336-B003-EAD-S1 USPP 1336B003EADS1
ALLEN BRADLEY 1336-L4 LOGIC ASSEMBLY PCB NIB
Allen Bradley Drive 575 Volt AC 1336-C040-EAG-L3-S1 40h
Allen Bradley 1336-MOD-L3 Interface Board#12316
EK-1480 ALLEN-BRADLEY CAT 1336 CONSTANT DRIVE
Allen Bradley#1336-L5 Control Interface(N)ABS/B13
ALLEN BRADLEY 1336-RFB-16-AA NSFP 1336RFB16AA
ALLEN BRADLEY 1336-MOD-FA1
ALLEN BRADLEY 1336-MOD-KB005*NIB*Dynamic Braker
ALLEN BRADLEY 1336-L6 NEW 1336L6 FACTORY PACKAGE SER.A
ALLEN BRADLEY 151146 BASE DRIVER BOARD 1336 3HP**NIB***
ALLEN BRADLEY 1336-140310 NSFP 1336140310
ALLEN BRADLEY 1336-F1-SP15A NSFP 1336F1SP15A
ALLEN BRADLEY 1336-120630 NSPP 1336120630
ALLEN BRADLEY 1336-120659 USPP 1336120659
ALLEN BRADLEY 1336-120663 USPP 1336120663
ALLEN BRADLEY 1336-120760 USPP 1336120760
ALLEN BRADLEY 1336-135771 NSFP 1336135771
ALLEN BRADLEY 1336-140146 USPP 1336140146
ALLEN BRADLEY 1336-148363 USPP 1336148363
ALLEN BRADLEY 1336-151135 USPP 1336151135
ALLEN BRADLEY 1336-L4E NSFP 1336L4E
ALLEN BRADLEY 1336-L5E NSPP 1336L5E
ALLEN BRADLEY 1336-L6E NSPP 1336L6E
ALLEN BRADLEY 1336-MOD-E1 USPP 1336MODE1
ALLEN BRADLEY 1336-MOD-N1 USPP 1336MODN1
ALLEN BRADLEY 1336-RFB-150-D USPP 1336RFB150D
ALLEN BRADLEY 1336-RFB-30-A NSFP 1336RFB30A
ALLEN BRADLEY 1336-RFB-80-C USPP 1336RFB80C
ALLEN BRADLEY 1336-WB035 USPP 1336WB035
ALLEN BRADLEY 1336-L-SP1C NSFP 1336LSP1C
ALLEN BRADLEY CONTROLLER CONTROL BOARD CARD 1336
Allen Bradley 1336-QOUT-SP12B Tstr.Assy.Output
1336L6 NEW ALLEN BRADLEY 1336 L6 FREE SHIPPING
ALLEN BRADLEY 1336-B020-EAE-L3-S1 USPP 1336B020EAEL3S1
ALLEN BRADLEY 1336-QOUT-SP12A NSFP 1336QOUTSP12A
ALLEN BRADLEY 1336-SN-SP3A NSFP 1336SNSP3A
ALLEN BRADLEY 1336-QOUT-SP8A NSFP 1336QOUTSP8A
ALLEN BRADLEY 1336-PB-SP14A NSFP 1336PBSP14A
ALLEN BRADLEY 1336-PB-SP23B NSPP 1336PBSP23B
ALLEN BRADLEY 1336-QOUT-SP6A NSFP 1336QOUTSP6A
ALLEN BRADLEY 1336-B007-EAD USPP 1336B007EAD
ALLEN BRADLEY 1336-SCR-SP2A FACTORY SEALED BOX
ALLEN BRADLEY 1336-B020-EAE-FA2-L3 USPP 1336B020EAEFA2L
ALLEN BRADLEY INTERFACE LOGIC BOARD~1336-MOD-L1
Allen Bradley 1336 1336vt ac drive 142507 148365
ALLEN-Bradley 1336-MOD-KB010 Dynamic Brake Drive;*Cab2
Allen-Bradley 1336-RFB-7-A Input RFI Line Filter
Allen Bradley Drive Accessory 1336-L6
Allen Bradley 1336-MOD-L2 1336MODL2+Factory Box!
ALLEN BRADLEY 1336-SN-SP8A CONVERTER SNUBBER PCB
ALLEN BRADLEY 1336-BDB-SP29A NSFP 1336BDBSP29A
Allen Bradley 1336-SN-SP16A PCB,INVERTER SNUBBER NEW
ALLEN BRADLEY 1336-GM1 SERIES C
ALLEN-BRADLEY 1336-BDB-SP29D USED
ALLEN BRADLEY 1336-P-11X17-1/4X3-5/8-COVER USPP 1336P11
ALLEN BRADLEY#1336-L6 NEW IN THE FACTORY BOX
ALLEN BRADLEY 1336-120659 NSFP 1336120659