Programmable Logic Controller (PLC) ndi makina apakompyuta opangira digito omwe amapangidwa makamaka kuti azigwiritsidwa ntchito m'mafakitale.Imagwiritsa ntchito kukumbukira kosinthika kuti isunge malangizo opangira ma logic, kuwongolera motsatizana, nthawi, kuwerengera, ndi masamu mkati mwake.Imayang'anira mitundu yosiyanasiyana ya zida zamakina kapena njira zopangira kudzera pa digito kapena ma analogi ndikutulutsa.
Programmable Logic Controller (PLC) ndi chowongolera masamu a digito chokhala ndi microprocessor yowongolera zokha, yomwe imatha kusunga ndikusunga malangizo owongolera kukumbukira anthu nthawi iliyonse.Woyang'anira mapulogalamu amapangidwa ndi zigawo zogwira ntchito monga CPU, malangizo ndi kukumbukira deta, mawonekedwe olowetsa / kutuluka, magetsi, kutembenuka kwa digito kupita ku analogi, ndi zina zotero. adatchedwa ma controller logic controller.Pambuyo pake, ndi chitukuko chosalekeza, ma modules apakompyuta omwe ali ndi ntchito zosavuta pachiyambi anali ndi ntchito zosiyanasiyana, kuphatikizapo kuwongolera malingaliro, kulamulira nthawi, kulamulira kwa analogi, ndi kulankhulana kwa makina ambiri.Dzinali linasinthidwanso kukhala Programmable Controller, Komabe, chifukwa cha mkangano pakati pa chidule cha PC ndi chidule cha Personal Computer, ndipo chifukwa cha zifukwa zachikhalidwe, anthu nthawi zambiri amagwiritsa ntchito mawu akuti programmable logic controller, ndipo amagwiritsabe ntchito chidule cha PLC.Chofunikira cha PLC yowongolera logic yokhazikika ndi kompyuta yodzipereka kuwongolera mafakitale.Zigawo zake zazikulu zikuphatikizapo: gawo lamagetsi, CPU module, memory, I / O input and output module, backplane ndi rack module, module communication, functional module, etc.
PLC Programmable Logic Controller: PLC imadziwika bwino kuti Programmable Logic Controller mu Chingerezi komanso logic controller mu Chitchaina.Imatanthauzidwa ngati njira yamagetsi yogwiritsidwa ntchito ndi digito, yopangidwa makamaka kuti igwiritsidwe ntchito m'mafakitale.Zimagwiritsa ntchito kalasi yokumbukira zomwe zingatheke posungira mapulogalamu mkati, kuchita malangizo ogwiritsidwa ntchito ndi ogwiritsa ntchito monga machitidwe omveka, kuyang'anira motsatizana, nthawi, kuwerengera, ndi masamu, ndikuwongolera mitundu yosiyanasiyana yamakina kapena njira zopangira kudzera pa digito kapena analogi / zotulutsa.DCS Distributed Control System: Dzina lonse la Chingerezi la DCS ndi Distributed Control System, pamene dzina lonse la Chitchaina ndi Distributed Control System.DCS ikhoza kutanthauziridwa ngati chinthu chopangidwa mwaukadaulo wapamwamba kwambiri chomwe chimagwiritsidwa ntchito kwambiri m'mafakitale momwe muli maulamuliro ambiri a loop, kuchepetsa kuopsa kwa kuwongolera, ndikuyika pakati kasamalidwe ndi ntchito zowonetsera.DCS nthawi zambiri imakhala ndi magawo asanu: 1: controller 2: I/O board 3: siteshoni 4: network network 5: graphics and process software.
1. Mphamvu yamagetsi, yomwe imapereka mphamvu zogwirira ntchito mkati mwa ntchito ya PLC, ndipo ena angaperekenso mphamvu zolembera zizindikiro.
2. CPU module, yomwe ndi yapakati processing unit ya PLC, ndiye maziko a PLC hardware.Kuchita kwakukulu kwa PLC, monga kuthamanga ndi kukula, kumawonetsedwa ndi machitidwe ake;
3. Memory: Imasunga makamaka mapulogalamu a ogwiritsa ntchito, ndipo ena amaperekanso kukumbukira kogwira ntchito kwadongosolo.Mwadongosolo, kukumbukira kumalumikizidwa ndi gawo la CPU;
4. I / O module, yomwe imagwirizanitsa maulendo a I / O ndipo imagawidwa kukhala ma modules azinthu zosiyana malinga ndi chiwerengero cha mfundo ndi mtundu wa dera, kuphatikizapo DI, DO, AI, AO, etc;
5. Base mbale ndi rack module: Imapereka mbale yoyambira yoyika ma modules osiyanasiyana a PLC, ndipo imapereka basi yolumikizana pakati pa ma modules.Ndege zina zam'mbuyo zimagwiritsa ntchitoma modules ndipo ena amagwiritsa ntchito mabasi kuti azilankhulana.Opanga osiyanasiyana kapena mitundu yosiyanasiyana ya PLC kuchokera kwa wopanga yemweyo sali yemweyo;
6. Gawo loyankhulana: Pambuyo polumikizana ndi PLC, ikhoza kuthandizira PLC kulankhulana ndi kompyuta, kapena PLC kulankhulana ndi PLC.Ena amathanso kulumikizana ndi zida zina zowongolera, monga zosinthira pafupipafupi, zowongolera kutentha, kapena kupanga netiweki yakomweko.Njira yolankhulirana imayimira kuthekera kwapaintaneti kwa PLC ndipo ikuyimira gawo lofunikira la magwiridwe antchito a PLC lero;
7. Ma modules ogwira ntchito: Kawirikawiri, pali ma modules owerengera othamanga kwambiri, ma modules oyendetsa malo, ma modules otentha, ma modules a PID, etc. .Mitundu ndi mawonekedwe a ma module anzeru amasiyananso kwambiri.Kwa ma PLC omwe amagwira ntchito bwino, ma module awa ali ndi mitundu yambiri komanso magwiridwe antchito abwino.
Nthawi yotumiza: Mar-21-2023