PLC的監(jiān)視定時(shí)器缺省值為200ms(可用D8000來(lái)設(shè)定),正常情況下PLC掃描周期小于此定時(shí)時(shí)間。如果由于有外界干擾或程序本身的原因使掃描周期大于監(jiān)視定時(shí)器的設(shè)定值,使PLC的CPU出錯(cuò)燈亮并停止工作,可通過(guò)在適當(dāng)位置加WDT指令復(fù)位監(jiān)視定時(shí)器,以使程序能繼續(xù)執(zhí)行到END。
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HONEYWELLMICROSWITCH922H26Q-C9P-LPROXIMITYSWITCH9.6/55VDC,200MA,LSZ4001
HUBBELL1201-GA.C.TOGGLESWITCHES15AMP,120/277V
VICKERS0885385REEDSWITCH
LUMBERGRSRK50-614/20F 
NIBWESTINGHOUSEOT2D4 
CROUSE-HINDS5000135-95 
FESTOSME-8-S-LED-24 
HONEYWELLMICROSWITCHMPSD11PHOTOELECTRICLIMITSWITCHW/NC2D-JP-DC48V
SQUARED9001-TS3K10 
OMRONE3F-3LZPHOTOELECTRIC 
TEMPCOEHD-108-101 
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HONEYWELLP/N22017TERMINALBLOCKSMODEL621-9950
AMPHENOLSINESYSTEMSA416-4K00-A6FEMALECONNECTORPLUG16POSITION 
INCLUDES(16)ELAV-260-1616-302PINS
TELEMECANIQUEXB4BW34B5 
HUBBELLAOZ-4ADAPTERA0Z-4,E30816-1ENCL&GASKFIXT
NIBALLENBRADLEY800T-Q10A 
NIBENTRELEC49302705PILOTLIGHT999297127VAC-DC
ELECTRONBEAMTECHNOLOGIESQCC-144 
GRAPHICCONTROLS10-55PRESSURE 
ALLENBRADLEY1492-J3 
ADVANCEAUTOMATIONCOMPANYLS-10R-NOLMIT 
TPC97346RETRACTILEQUICK-CONNECTCABLE16/4MALE/FEMALE 
MERCOIDCONTROLAP-89-37 
STA-KONRC10-250FFEMALEDISCONNECTSFOR0.25X0.032 
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ALLENBRADLEY800T-PB16PUSHBUTTONSERT,40171-002-01W/800T-XASERD
ZANDERAACHENKL14SWITCH16A250VT85VDE0660
ALLENBRADLEY800T-H4812LOCKCYLINDERSWITCHWITHAB800T-XD1 
OMRONXW2Z-200A2MCABLEFORSCREW 
NIBTREX-ONICS63440/97035 
THOMAS&BETTSZA-100-3/8STEEL 
IFMEFECTORL31076CONNECTORCABLESTRAIGHTMINI/5-AC-X/X-S0L-PVC-30FT
HULL864732KIT,LYOPHILIZER
TELEMECANIQUEXB4BD33 
TELEMECANIQUEXB4BW35B5
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TELEMECANIQUEZB2BW64PUSHBUTTONMUSHROOM2POSITION 
SQUARED9001-KM-1PILOTLIGHTMODULES9001KM1SER.G,110-120V
NIBCUTLER-HAMMER10250T9 
SCOTCHLOKMNU14-187DMIX 
ALLENBRADLEY800TP-16PILOTLIGHTW/X-210963TRANSFORMER120V 
NIBCUTLER-HAMMER3TA400KTERMINALASSY.4212B61G023/0-250MCM 
NIBCMCAN-130A175AGRAYCONNECTORS6325-G197-056-4380
NIBLUMBERGASBSV45DISTRIBUTIONBOXASBSV-4-5,MAT.NR:11133
FEDEGARIGM100124CLAMPSSB12690
CUTLERHAMMER10250TB63 
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SQUARED9007-AW16LIMITSWITCHSER.C,W348-SI6-G2
NIBSIEMENS3SB1001-0AE32 
SQUARED9007-B52D,120VAC1/4HP10AMPSER.B
SQUARED9007-C054 SER.A 
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PIZZATONFB220BB-DN2 
SQUARED9007-31032-452-51 
NIBSTIHP2008-02SMLIMITSWITCH2N/C,M16,75mmSHAFT+ADAPTER
SQUAREDCLASS9007TYPEBO62A2 
FESTO18685DUOCABLEKM12-DUO-M8-GDGD
THOMAS&BETTS54610 
NIBDWYER1823-2SERIES1800DIFFERENTIAL 
NIBALLENBRADLEY800MR-Q24RSSERD 
RTECORP2609459A05BTERMINALCONNECTORSDC843186,1/0STR,2/0SOL
NIBGENERALELECTRICEB27A04STERMINALBOARDWIRESIZE4W/183B4226P-IBLOCK
NIBHONEYWELLMICROSWITCHBZE6-2RQ 
YALEHOIST41-KNIT 
PIZZATOFR-573STABLEPOSITION 
NIBGENERALELECTRICP9MPLBSDN12NCDI 
AMPHENOLMS3108A14S-2P 
HONEYWELLMICROSWITCHPTSHA201SELECTORSWITCHW/PTSZ74KNOB
TURCKB5131-0FIELDWIREABLEPLUGSANDRECEPTACLES6904910U6500
NSI250TCONNECTORS 
BW2B-LINEFASTENERS,RODANDWIREFASTENERS,100COUNTEACH
EPICCONNECTORS10.0050BASE 
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