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PLC控制器本身的硬件采用積木式結(jié)構(gòu),各廠家產(chǎn)品結(jié)構(gòu)大同小異。以日本歐姆龍C200HE為例,為總線模板框式結(jié)構(gòu),基本框架(CPU母板)上裝有CPU模板,其它槽位裝有I/O模板;如果I/O模板多時(shí),可由CPU母板經(jīng)I/O擴(kuò)展電纜連接I/O擴(kuò)展母板,在其上裝I/O模板;另一種方法是配備遠(yuǎn)程I/O從站等。這些都說明了PLC廠家將硬件各部件均向用戶開發(fā),便于用戶選用,配置成規(guī)模不等的PLC,而且這種硬件配置的開放性,為制造商、分銷商(代理商)、系統(tǒng)集成商、終用戶帶來很多方便,為營銷供應(yīng)鏈帶來很大便利,這是一大成功經(jīng)驗(yàn)。
PLC內(nèi)的I/O模板,除一般的DI/DO、AD/DA模板外,還發(fā)展了一系列特殊功能的I/O模板,這為PLC用于各行各業(yè)打開了出路,如用于條形碼識(shí)別的ascii /BASIC模板,用于反饋控制的PID模板,用于運(yùn)行控制、機(jī)械加工的高速計(jì)數(shù)模板、單軸位置控制模板、雙軸位置控制模板、凸輪定位器模板、射頻識(shí)別接口模板等,這在以后還會(huì)有很大發(fā)展。另外在輸入、輸出的相關(guān)元件、強(qiáng)干擾場合的輸入、輸出電隔離、地隔離等方面也會(huì)更加完善。
BANNER REMOTE SENSOR SP100E
MICRON POSITION TRANSDUCER 36-107-204-1358
BANNER POWER BLOCK SENSOR SCANNING HEAD OPBTEQDH
BENTLY NEVADA VELOCITY SEISMOPROBE 16699-01-05-01
BANNER OPPOSED MODE SENSOR T186EQ NIB
SICK 24VDC 50/60HZ OPTIC ELECTRONIC SAFETY
PRINTRONIX PAPER MOTION SENSOR 108616-901
CUTLER HAMMER COMET PHOTOELECTRIC SENSOR 13104R6517 NIB
RIPLEY LIGHT WATCHMAN PHOTO SELL SWITCH 7001
TELEMECANIQUE PHOTO ELECTRIC SENSOR XUE-H017535
SMC AUTOSWITCH/SENS?OR D-A73H
NAMCO PROXIMITY SWITCH EE951-02103 NIB
NOSHOK 2.5" 0-1500PSI PRESSURE GAUGE 1500
BALLUFF PROXIMITY SENSOR 516-420-A0-LPC NIB
ELECTRO SENSOR SPEED SWITCH SS-100
SMC AUTO SWITCH PROXIMITY SWITCH D-A53
IFM EFFECTOR IN2004FRKG IN5262 PROXIMITY SWITCH NIB
TELEMECANIQUE * ZCK Y091 LIMIT SWITCH ACTUATING KEY * 059973
PRIME CONTROLS DUAL PROBE SENSOR P1000BC
CUTLER-HAMMER, 18MM TUBULAR PHOTOELECTRIC REFLEX NIB
IFM EFECTOR 20-140VAC INDUCTIVE SENSOR ID0039 IDC2050BARKA/LS?-100AK
SICK LIGHT CURTAIN C40E-0603AN310
HARTMANN & BRAUN SENSYCON 0-20mA CONVERTER TEIP 11
STI 43531-0360 36" 0.3-30M RANGE LIGHT CURTAIN TRANSMITTER
DELPHI OXYGEN SENSOR ES10714 NIB
DELPHI OXYGEN SENSOR ES10297 NIB
SICK SENSOR WL250-N430
BEI TECHNOLOGIES INDUSTRIAL ENCODER 924-01002-9714
EATON CUTLER-HAMMER 13107RSQD03 COMET SERIES 20-264 VAC PROXIMITY SENSOR, NNB
OTHER * IFM EFFECTOR PHOTOELECTRIC SENSOR * OGT500
SICK 8W LIGHT CURTAIN FSGE 1800-211
SICK 8W LIGHT CURTAIN FSGE 1800-211
SKF PEAK SENSOR CMSS2200
SKF VIBRATION SENSOR CMSS799LF
SICK FIBER OPTIC LIGHT GUIDE LBST NIB 32900
BANNER SENSOR POWER SUPPLY 65849 NIB
COMPACT * LIGHT CURTAIN TRANSMITTER * CT30-1650
BANNER 27190 PHOTOELECTRIC DC POWER BLOCK OPBTEQDH
CTC PROTECTION & RELIABILITY OPTIMZATION INSTRUMENT SC203100A002IR0?1001K