Nguwuphi umahluko phakathi kwesilawuli esishukumayo kunye ne-plc

Nguwuphi umahluko phakathi kwesilawuli esishukumayo kunye ne-plc?

Isilawuli seMotion sisilawuli esikhethekileyo sokulawula indlela yokusebenza kwemoto: umzekelo, i-motor ilawulwa ngumnxibelelanisi we-AC ngesitshixo sokuhamba kwaye i-motor iqhubela into ukuba ibaleke ifike kwindawo echaziweyo kwaye ibaleke phantsi, okanye isebenzise. ixesha relay ukulawula motor ukuba ijike positive kwaye negative okanye ujike okwexeshana ukuba ume kwaye ujike okwexeshana ukuma.Ukusetyenziswa kokulawula ukunyakaza kwintsimi yeerobhothi kunye nezixhobo zomatshini ze-CNC zinzima ngakumbi kunoomatshini abakhethekileyo, abanohlobo olulula lokunyakaza kwaye bahlala bebizwa ngokuba yi-general motion control (GMC).

Iimpawu zesilawuli sentshukumo:

(1) Ukuqulunqwa kwe-hardware kulula, faka umlawuli wentshukumo kwibhasi yePC, udibanise umgca wesignali unokuqulunqwa kwenkqubo;

(2) Unokusebenzisa iPC inophuhliso lwesoftware olutyebileyo;

(3) Ikhowudi yesoftware yokulawula intshukumo inobume bendalo yonke kunye nokuphatheka kakuhle;

(4) Kukho iinjineli ezininzi ezinokuqhuba umsebenzi wophuhliso, kwaye uphuhliso lunokwenziwa ngaphandle koqeqesho oluninzi.

Yintoni i-plc?

I-Programmable logic controller (PLC) yinkqubo ye-elektroniki ye-arithmetic yedijithali eyenzelwe ukusetyenziswa kwindawo yoshishino.Isebenzisa imemori ecwangcisiweyo apho imiyalelo yokwenza imisebenzi efana nokusebenza okunengqiqo, ukulawula ukulandelelana, ixesha, ukubala kunye nemisebenzi ye-arithmetic igcinwa, kwaye iintlobo ezahlukeneyo zezixhobo zomatshini okanye iinkqubo zokuvelisa zilawulwa nge-digital okanye i-analog input kunye nesiphumo.

Iimpawu zeplc

(1) Ukuthembeka okuphezulu.Ngenxa yokuba i-PLC ubukhulu becala isebenzisa i-microcomputer ye-chip enye, ukudityaniswa okuphezulu kakhulu, kunye nesekethe yokhuseleko ehambelanayo kunye nomsebenzi wokuzixilonga, ukuphucula ukuthembeka kwenkqubo.

(2) Ukucwangcisa lula.Inkqubo ye-PLC isebenzisa idayagram yokulawula ileli kunye nesiteyitimenti somyalelo, inani lingaphantsi kakhulu kunomyalelo we-microcomputer, ngaphezu kwe-PLC ephakathi kunye nephezulu, i-PLC encinci kuphela malunga ne-16. Ngenxa yomfanekiso we-ladder diagram kunye nokulula, kulula ukuqonda, kulula ukuyisebenzisa, nokuba akufuni buchule bekhompyuter, inokucwangciswa.

(3) Ubume obuguquguqukayo.Ngenxa yokuba i-PLC ithatha isakhiwo sebhloko yokwakha, umsebenzisi kufuneka adibanise kuphela, ngoko unokutshintsha ngokuguquguqukayo umsebenzi kunye nobukhulu benkqubo yokulawula, ngoko ke, inokusetyenziswa kuyo nayiphi na inkqubo yokulawula.

(4) Gqibezela iimodyuli zomsebenzi wegalelo/imveliso.Enye yeenzuzo ezinkulu ze-PLC kukuba kwiimpawu zentsimi ezahlukeneyo (ezifana ne-DC okanye i-AC, ubungakanani bokutshintsha, ubungakanani bedijithali okanye ubungakanani be-analog, i-voltage okanye yangoku, njl. njengamaqhosha, iiswitshi, ii-transmitter zangoku zokuva, iziqalisi zeemoto okanye iivalvu zolawulo, njl. njl.) ngokuthe ngqo, kwaye ziqhagamshelwe kwi-motherboard ye-CPU ngebhasi.

(5) Ufakelo olulula.Xa kuthelekiswa nenkqubo yekhompyuter, ukufakwa kwe-PLC akudingi gumbi likhethekileyo, kwaye ayifuni milinganiselo yokukhusela engqongqo.Xa isetyenziswe, kuphela isixhobo sokubona kunye ne-terminal ye-I / O ye-interface ye-actuator kunye ne-PLC ixhunyiwe ngokuchanekileyo, ngoko inokusebenza ngokuqhelekileyo.

(6) Isantya sokubaleka ngokukhawuleza.Ngenxa yokuba ulawulo lwe-PLC lulawulwa ngokuqhutywa kwenkqubo, ngoko ke nokuba ukuthembeka kwayo okanye isantya sokuhamba, kulawulo lwe-relay logic ayinakuthelekiswa.Kwiminyaka yakutshanje, ukusetyenziswa kwe-microprocessor, ngakumbi ngenani elikhulu le-microcomputer ye-chip enye, iphucule kakhulu isakhono se-PLC, kwaye umahluko phakathi kwe-PLC kunye nenkqubo yokulawula i-microcomputer iya isiba yincinci kwaye incinci, ngakumbi i-PLC yodidi oluphezulu injalo.

Umahluko phakathi kwesilawuli esishukumayo kunye ne-plc:

Ulawulo lwentshukumo ikakhulu lubandakanya ulawulo lwe-stepper motor kunye ne-servo motor.Isakhiwo solawulo ngokubanzi: isixhobo sokulawula + umqhubi + (i-stepper okanye i-servo) motor.

Isixhobo sokulawula sinokuba yinkqubo ye-PLC, inokuba sisixhobo esikhethekileyo esizenzekelayo (njengomlawuli wentshukumo, ikhadi lokulawula ukunyakaza).Inkqubo ye-PLC njengesixhobo sokulawula, nangona inokuguquguquka kwenkqubo ye-PLC, ukuguquguquka okuthile, kodwa ngokuchaneka okuphezulu, okufana nokulawulwa kwe-interpolation, iimfuno ezibuthathaka xa kunzima ukwenza okanye inkqubo inzima kakhulu, kwaye iindleko zinokuba phezulu. .

Ngenkqubela phambili yezobuchwepheshe kunye nokuqokelela, umlawuli wentshukumo uvela ngexesha elifanelekileyo.Iqinisa imisebenzi ethile jikelele kunye neyodwa yolawulo lwentshukumo kuyo - njengemiyalelo yofakelo.Abasebenzisi kufuneka kuphela ukuqwalasela kunye nokubiza ezi bhloko okanye imiyalelo esebenzayo, enciphisa ubunzima beprogram kwaye inenzuzo ekusebenzeni kunye neendleko.

Kwakhona kunokuqondwa ukuba ukusetyenziswa kwe-PLC sisixhobo esiqhelekileyo sokulawula intshukumo.Umlawuli oshukumayo yi-PLC ekhethekileyo, ixesha elipheleleyo lokulawula ukunyakaza.