Cov ntsiab lus tseem ceeb, cov ntsiab cai ua haujlwm, thiab daim ntawv thov scenarios ntawm Application txee
Mar 31, 2026
Basic tswvyim thiab core hardware architecture
Daim ntawv thov txee yog tag nrho cov khoom siv tswj nrog programmable logic maub los (PLC) ua lub hauv paus, uas yog sib npaug rau "lub hlwb" ntawm cov tshuab kev lag luam. Nws outputs tswj cov lus qhia los ntawm kev tau txais ntawm - site Pib ntsais koj teeb thiab executing preset cov kev pab cuam kom ua tiav automation ntawm industrial txheej txheem.
Nws cov cuab yeej kho vajtse yog kev sib koom tes zoo heev, feem ntau muab faib ua tsib pawg: thawj yog cov tswj hwm (PLC tus tswv), uas suav nrog CPU lub luag haujlwm rau kev suav, nco rau khaws cia cov kev pabcuam thiab cov neeg siv kev pabcuam, nrog rau kev sib txuas lus thiab kev sib txuas lus.
Qhov thib ob yog lub zog hluav taws xob, uas yog lub luag haujlwm rau hloov AC lub zog rau hauv DC lub zog ruaj khov (xws li DC 24V) los muab lub zog rau tag nrho lub txee. Nyob rau hauv lub sijhawm tseem ceeb, lub hwj huam thaub qab yuav raug teeb tsa.
Qhov thib peb yog lub tswv yim / tso zis (I / O) module, uas ua hauj lwm raws li lub teeb liab kev sib pauv choj kom ua tiav qhov kev hloov dua siab tshiab thiab kev rho tawm ntawm digital thiab analog teeb liab.
Qhov thib plaub yog cov khoom siv hluav taws xob sib txuas ntawm PLC cov khoom hauv txee, suav nrog cov relays, contactors, circuit breakers, terminal blocks, thiab surge protectors, siv rau lub zog amplification, kab kev tiv thaiv, thiab cov txheej txheem thaiv; Qhov thib tsib yog cov qauv txee, uas muaj cov qib tiv thaiv sib xws thiab cov khoom siv hluav taws xob tiv thaiv hluav taws xob. Nws ua raws li lub hauv paus ntsiab lus ntawm kev sib cais muaj zog thiab tsis muaj zog hluav taws xob sab hauv los xyuas kom meej tias cov khoom ua haujlwm nyob rau hauv ib qho chaw tsim nyog.
Lub hauv paus ntsiab lus thiab cov yam ntxwv tseem ceeb ntawm cyclic scanning
Lub ntsiab lus ntawm kev ua haujlwm ntawm Daim Ntawv Thov Txiaj Ntsig yog "kev tawm tswv yim- tawm" cyclic scanning logic voj, nrog rau tag nrho lub voj voog tsuas siv ob peb kaum milliseconds xwb. Ua ntej, thaum lub sij hawm input sampling theem, ntawm - site teeb liab xwm txheej yog nyeem thiab khaws cia nyob rau hauv lub input duab register.
Thib ob, thaum lub sijhawm ua tiav cov haujlwm, CPU ua cov haujlwm ua haujlwm ntawm cov ntaub ntawv sau npe hauv ib ntu thiab khaws cov txiaj ntsig hauv cov duab tso tawm.
Thaum kawg, thaum lub sij hawm tso zis refresh theem, cov txiaj ntsig tau tawm mus rau tus actuator los tsav lub cuab yeej ua haujlwm hauv ib qho mus.
Raws li cov txheej txheem no, Standard PLC txee nthuav tawm cov yam ntxwv tseem ceeb uas tsim nyog rau kev lag luam ib puag ncig: ua ntej, muaj kev ntseeg siab, tswj kev ua haujlwm ruaj khov rau kaum tawm txhiab teev nyob rau hauv ib puag ncig hnyav los ntawm kev sib cais kho vajtse thiab software tus kheej kuaj tshuab.
Qhov thib ob, qhov programming hloov pauv tau yooj yim thiab nthuav dav, siv cov lus graphical xws li daim duab ntaiv. Hloov kho qhov kev zov me nyuam tsis tas yuav hloov kho kho vajtse, thiab nws txhawb nqa kev ua haujlwm modular nthuav dav.
Qhov thib peb yog tib neeg zoo -koom siv kev sib cuam tshuam thiab kev saib xyuas tej thaj chaw deb muaj peev xwm, uas tuaj yeem ua ke nrog lub vijtsam kov thiab lub khoos phis tawj sab saud kom ua tiav cov ntaub ntawv sau thiab ua haujlwm nyob deb.
Qhov thib plaub yog kev tiv thaiv kev nyab xeeb muaj nuj nqi, ua ke nrog software thiab kho vajtse logic kom ua tiav cov saw xwm ceev kaw rau cov xwm txheej txawv txav xws li kev thauj khoom ntau dhau thiab kev txwv ntau dhau.
Hom Kev Lag Luam Daim Ntawv Thov Scenarios
Nrog nws cov peev xwm tswj tau muaj zog, PLC system txee rau cov dej phwj tuaj tau nkag mus rau hauv ntau qhov xwm txheej automation. Hauv kev lag luam tsim khoom, nws ua haujlwm tseem ceeb ntawm cov kab ntau lawm automation, tswj cov neeg hlau, siv cov khoom siv, thiab CNC tshuab cov cuab yeej ua haujlwm ua ke, txhim kho kev tsim khoom thiab kis tus nqi.
Nyob rau hauv lub tshav pob ntawm lub zog, kev ua txhaum cai thiab tsis siv neeg tripping yog siv rau boiler combustion, turbine regulation, thiab kis tau tus mob thiab tis ntawm lub hwj chim tsim cov cuab yeej los xyuas kom meej ruaj khov zog tso zis.
Hauv kev tsim vaj tsev hauv nroog, nws yog lub luag haujlwm rau kev pib nres ntawm cov twj tso kua dej hauv cov dej thiab cov kav dej, kev sib txuas ntawm cov khoom siv hauv cov dej phwj tuaj kho cov nroj tsuag, thiab kev tswj cov teeb pom kev thiab cov teeb liab.
Nyob rau hauv cov txheej txheem kev lag luam xws li tshuaj lom neeg thiab metallurgical industries, PLC vaj huam sib luag txee ua kom muaj kev nyab xeeb ntawm kev ua haujlwm siab - cov khoom muaj kev pheej hmoo xws li cov hlab ntsha thiab cov khoom siv hlau hlau los ntawm cov kev cai PID thiab cov kev tswj xyuas nruj nruj.
Hauv kev lag luam khoom noj thiab tshuaj, nws yog siv los tswj kev ua kom tsis muaj menyuam thiab cov khoom ntim puv, ua kom huv ntawm cov txheej txheem tsim khoom, thiab ua tiav kev ua raws traceability ntawm cov txheej txheem tseem ceeb.
Cov ntsiab lus tseem ceeb rau kev tu txhua hnub thiab kev daws teeb meem
Kev saib xyuas kev tshawb fawb thiab kev daws teeb meem yog qhov tseem ceeb los xyuas kom meej lub sijhawm ntev - kev ua haujlwm ruaj khov ntawm Automation tswj txee. Kev saib xyuas txhua hnub yuav tsum muaj lub zog tsis tu ncua -tawm los ntxuav cov plua plav hauv lub txee kom tsis txhob muaj hluav taws xob luv luv lossis tsis muaj cua sov; Tsis tu ncua xyuas qhov kev ruaj ntseg ntawm lub ntsiab fais fab mov thiab hloov lub hwj chim mov voltage, nruj los yog hloov xoob los yog oxidized hlau terminals; Xyuas kom lub kiv cua txias ua haujlwm zoo thiab qhov ntsuas kub thiab av noo ua tau raws li cov qauv; Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum tsis tu ncua backup cov neeg siv cov kev pab cuam thiab tam sim hloov cov roj teeb sab hauv uas tau mus txog qhov kawg ntawm lawv lub neej.
Thaum muaj teeb meem tshwm sim, lub hauv paus ntsiab lus ntawm "sab nraud ua ntej sab hauv, kho vajtse ua ntej software" yuav tsum tau ua raws: thawj zaug xyuas seb cov khoom siv hluav taws xob sab nraud puas tau ploj mus, seb qhov ntawm - qhov chaw sensors lossis lub cev muaj zog puas, thiab seb lub khawm nres thaum muaj xwm ceev tau ua tsis raug; Yog tias sab nraud ntawm Modular PLC txee yog qhov qub, saib xyuas cov xwm txheej ntawm PLC module qhov taw qhia teeb thiab siv software los nyeem cov lej yuam kev txhawm rau nrhiav cov teeb meem kho vajtse; Thaum kawg, saib xyuas cov xwm txheej ntawm daim duab sau npe online los ntawm software thiab maj mam daws cov teeb meem kev ua haujlwm tsis raug.
Tiv tauj peb
Nyob rau hauv cov txheej txheem kev siv tshwj xeeb ntawm automation tej yaam num, kev tshaj lij thiab txhim khu kev qhaDaim ntawv thov txeecustomization thiab kev pabcuam kev koom ua ke yog qhov tseem ceeb sib npaug. Yog tias koj muaj kev xaiv cov khoom siv lossis cov kev xav tau kev hloov kho, thov hu rau peb pab neeg ua haujlwm txhua lub sijhawm rau cov kev daws teeb meem tshwj xeeb.
