Qhov txawv ntawm qhov kev tswj xyuas thiab PLC sib txawv li cas?
Tsav tus tswj xyuas yog ib qho kev tswj tshwj xeeb uas tswj kev khiav hauj lwm hom ntawm lub cev. Piv txwv, lub tshuab tswj ntawm AC AC contactor los ntawm qhov kev hloov qis thiab tus tsav lub tsheb ua tus kwv mus txog qhov chaw qhia. Teem nws thiab cia li khiav nws, los yog siv lub sij hawm relay los tswj lub cev kom rov los yog tso tseg rau ib lub sij hawm thiab ces tig nws dua ib ntus. Daim ntawv thov kev tswj ntawm kev tswj ntawm cov cuab yeej tswj kev lag luam yog cov nyuab dua daim ntawv thov tshwj xeeb cov cav tov, vim hais tias yav tas los yog daim ntawv yooj yim thiab feem ntau hu ua General Motion Control (GMC).
Motion controller nta
(1) Qhov sib xyaw kho vajtse yooj yim yog yooj yim, ntxig rau qhov kev tswj xyuas rau hauv lub npav PC, txuas cov hlua teeb liab tuaj yeem ua rau lub system;
(2) Nws muaj peev xwm raug tsim los siv cov software nplua nuj uas twb muaj nyob hauv PC;
(3) Lub zeem qhov sib txuam thiab kev ywj pheej ntawm kev tswj suab paj nruag yog qhov zoo dua;
(4) Muaj ntau tug kws tsav tsheb kws muaj peev xwm ua tau num rua kev ua num, hab puab tuaj yeem tsim muaj ntau yaam kev cob qha.
PLC yog dab tsi?
Programmable logic controllers yog cov kev khiav hauj lwm hluav taws xob uas tsim los rau cov kev lag luam siv. Nws siv lub cim suab paj nruag, ua lag luam thiab kev ua lag luam, xws li cov kev ua lag luam, kev tswj xyuas, kev sib tw, suav, thiab kev kos duab, thiab tswj cov khoom siv los yog ntau cov khoom siv los ntawm digital lossis analog tawm tswv yim thiab cov zis.
PLC nta
(1) Kev ntseeg siab. Raws li feem ntau PLCs siv ib leeg-nti microcomputers, lub degree ntawm kev koom ua ke yog siab, ua ke nrog qhov kev tiv thaiv kev tiv thaiv thiab nws tus kheej mob muaj txiaj ntsig, uas ua rau kev txhim kho kev ruaj ntseg ntawm lub system.
(2) Yooj yim programming. PLC lub cajmeem siv cov khoom sib chaws los tswj cov kab ntaiv thiab cov lus sam xeeb. Tus naj npawb ntawm kev sib tshuam yog tsawg dua li ntawm cov khoom siv microcomputer. Ntxiv nrog rau nruab nrab thiab qib high-end PLCs, cov PLCs me me tsuas muaj 16 los yog li ntawd. Vim tias cov kab kos duab yooj yim yog yooj yim, nws yooj yim los tuav, yooj yim los siv, thiab tseem yuav tsum tsis muaj kev txhawj xeeb hauv koos pis tawj rau txoj haujlwm.
(3) Saj zawg zog configuration. Vim tias PLC txais kev kho ib tus qauv, tus neeg siv yuav tsum tau tsuas yog sib koom ua ke thiab muaj peev xwm hloov tau qhov kev ua haujlwm thiab kev ntsuas ntawm kev tswj hwm. Yog li, nws tuaj yeem siv rau txhua qhov kev tswj hwm.
(4) Module input / output module tiav. Ib qho ntawm cov txiaj ntsig zoo tshaj ntawm PLC yog tias nws yog tswj ntawm qhov sib txawv ntawm qhov chaw (xws li DC lossis AC, hloov, digital lossis analog, voltage or current, etc.).
Tag nrho cov ntsiab lus coj los sib txuas tau ncaj qha mus nrog cov khoom siv nyob rau hauv kev lag luam (xws li cov nyees khawm, keyboards, sensor tam sim no transducers, motor starters lossis tswj li qub, thiab lwm yam), thiab txuas nrog CPU motherboard los ntawm lub npav.
(5) Ib qho yooj yim rau nruab. Piv nrog rau lub computer system, lub installation ntawm lub PLC tsis tas yuav tsum tau siv lub tshuab foob lub tshuab, los yog nws tsis tas yuav tsum tau ceev nruj ntsuas. Tsuas yog siv cov khoom ntes ntaus nrog cov actuator thiab PLC
Qhov I / O interface terminals tau txuas nrog thiab ua haujlwm tau txhua zaus.
(6) Ceev cov haujlwm. Vim tias PLC tswj tau ua los ntawm kev tswj xyuas, tsis hais nws qhov kev cia siab lossis kev khiav haujlwm khiav ceev, nws tsis tuaj yeem muab piv nrog kev tswj cov kev sib txuas lus. Nyob rau xyoo tas los no, kev siv cov micro processor, tshwj xeeb tshaj yog nrog cov coob ntawm ib leeg-nti microcomputer, ua rau lub peev xwm ntawm PLC zoo heev, thiab ua rau qhov sib txawv ntawm PLC thiab microcomputer kev tswj ntau thiab ntau me me, tshwj xeeb tshaj yog cov siab -Cov PLC zoo li qhov no.
Qhov txawv nruab nrab ntawm kev hais lus thiab plc
Tsa suab tswj hwm yog kev tswj hwm ntawm kev tsav tsheb thiab cov tshuab hluav taws xob (servo motors). Tus qauv tswj kev lag luam yog feem ntau: tswj cov cuab yeej + tus neeg tsav tsheb (stepping los yog servo) engine.
Cov cuab yeej tswj tau yog PLC system los yog ib qho kev sib txuas ntawm kev tswj xyuas (xws li kev tswj xyuas lub suab, kev tswj xyuas cov lus tsa suab). Thaum lub tshuab PLC raug siv los ua tus tswj cov cuab yeej, nws muaj qhov yooj ntawm lub tshuab PLC.
Muaj qee qhov kev kawm ntawm ntau yam, tab sis rau kev ncaj ncees, xws li - kev tswj tus kheej, kev xav ua kom tsis yooj yim los yog lub programming nyuaj nyuaj, thiab tus nqi yuav siab dua.
Nrog rau kev nce qib ntawm kev siv tshuab thiab kev siv technology, cov kev tswj xyuas qhov kev tawm suab tau los ua. Lawv ua kom muaj qee txoj kev tswj hwm ntawm kev tswj hwm thiab kev tswj tshwj xeeb - xws li kev qhia cov lus qhia, cov neeg siv yuav tsum tau sib txuas lus thiab hu cov npe no los yog cov lus qhia, uas yooj yim ntawm qhov kev zov me nyuam thiab muaj qhov ua tau zoo hauv kev ua tau thiab cov nqi.
Nws kuj tseem yuav to taub hais tias kev siv PLC yog ib qho cuab yeej tswj kev lag luam. Qhov kev tswj xyuas lag luam yog ib qho tshwj xeeb ntawm PLC tshwj xeeb rau kev tswj xyuas lub zog.