PLC (Programmable Logic Controller) thiab microcontrollers yog ob hom kev tswj hwm. Lawv txawv raws li hauv qab no:
Scope ntawm kev siv:PLCs feem ntau yog siv nyob rau hauv industrial automation tswj systems, thaum microcontrollers feem ntau yog ua hauj lwm nyob rau hauv me me embedded systems.
Programming txoj kev:PLC programming languages feem ntau siv graphical programming languages zoo ib yam li Ladder Diagrams, whereas microcontroller programming languages feem ntau siv high -the language languages xws li C.
Kev ceev ceev:PLCs feem ntau ua haujlwm tswj cov logic nyuaj, thaum microcontrollers tswj ntau dua - lub sijhawm tau txais cov ntaub ntawv thiab ua tiav. Yog li ntawd, PLCs feem ntau muab kev ua haujlwm siab dua thiab ruaj khov dua.
Kev sib txuas lus:PLCs feem ntau sib txuas lus nrog lwm PLCs lossis PCs, whereas microcontrollers feem ntau cuam tshuam nrog sensors lossis actuators.
Tus nqi sib txawv:PLCs feem ntau kim dua li microcontrollers vim tias lawv tau tsim los rau kev lag luam ib puag ncig, muab kev ntseeg siab dua thiab ruaj khov.
PLCs thiab microcontrollers muaj qhov sib txawv ntawm cov xwm txheej hauv daim ntawv thov, cov txheej txheem kev ua haujlwm, kev ua haujlwm nrawm, txoj kev sib txuas lus, thiab tus nqi.
Cov microcontrollers puas tuaj yeem tsim tau siv PLC programming?
Feem ntau, microcontrollers tsis tuaj yeem ua haujlwm siv PLC programming. PLCs (Programmable Logic Controllers) yog cov tswj tshwj xeeb uas nws cov lus programming thiab cov txheej txheem tau tsim tshwj xeeb rau kev lag luam automation tswj tshuab. PLC programming feem ntau siv graphical programming lus xws li Ladder Diagram, haum rau kho vajtse thiab software yam ntxwv ntawm PLCs.
Microcontrollers yog dav dav -lub hom phiaj microcontrollers nrog rau kev siv dav, suav nrog cov tshuab kos, cov khoom siv hauv tsev ntse, thiab cov khoom siv hluav taws xob. Microcontrollers feem ntau yog programmed siv high - cov lus qib zoo li C, es tsis yog cov lus siv graphical programming siv rau PLCs.
Thaum PLCs qee zaus tswj cov microcontrollers hauv cov ntawv thov tshwj xeeb-xws li kev tswj hwm ntau lub microcontrollers lossis ua haujlwm siab tshaj -theem tswj rau kev tswj xyuas qhov tseeb- cov xwm txheej zoo li no tsis tshua muaj tshwm sim thiab xav tau kev tshaj lij tshwj xeeb.
Puas yog PLC suav nrog kev txhim kho?
PLCs (Programmable Logic Controllers) feem ntau yog cais raws li kev kos duab. Embedded systems xa mus rau cov tshuab computer sib xyaw rau hauv cov khoom siv lossis cov tshuab, tsim los ua cov haujlwm tshwj xeeb lossis cov haujlwm, feem ntau ua haujlwm hauv qhov chaw zais lossis nkag tsis tau. PLCs yog cov tswj tshwj xeeb tsim rau kev lag luam automation tswj cov tshuab, feem ntau embedded nyob rau hauv automated khoom los tswj thiab saib xyuas nws cov lag luam.
PLCs feem ntau nthuav tawm cov yam ntxwv hauv qab no ntawm cov tshuab kos duab:
Cov peev txheej hardware txwv:Piv rau qhov dav -lub hom phiaj khoos phis tawj lossis servers, PLCs tau txwv cov khoom siv kho vajtse, feem ntau suav nrog cov txheej txheem, nco, thiab cov chaw nkag / tawm.
Siab tiag tiag - lub sijhawm xav tau:PLCs yuav tsum teb rau cov lus qhia tawm hauv lub sijhawm tiag tiag thiab ua haujlwm tswj cov txheej txheem nrawm nrawm, yuav tsum muaj qhov ua tau zoo tshaj - lub sijhawm ua haujlwm.
High stability yuav tsum:PLCs yuav tsum muaj kev ntseeg siab thiab ruaj khov nyob rau lub sijhawm ntev hauv kev lag luam ib puag ncig.
Txoj kev sib txuas lus tshwj xeeb:PLCs sib txuas lus nrog lwm cov PLCs lossis cov khoom siv uas siv cov txheej txheem kev sib txuas lus zoo xws li MODBUS lossis Profibus.
Raws li cov yam ntxwv no, PLCs feem ntau tau lees paub tias yog hom kev teeb tsa.