Tashar sadarwa ta RS485 bayanin kayan masarufi ne na tashoshin sadarwa.Yanayin wayoyi na tashar jiragen ruwa RS485 yana cikin topology na bas, kuma ana iya haɗa iyakar nodes 32 zuwa bas iri ɗaya.A cikin hanyar sadarwa ta RS485 gabaɗaya tana ɗaukar yanayin sadarwa na ubangida-bawa, wato, mai masaukin baki tare da bawa da yawa.A mafi yawan lokuta, hanyoyin sadarwa na rS-485 ana haɗa su ne kawai zuwa ƙarshen “A” da “B” na kowane keɓancewa tare da igiyoyi masu murɗa biyu.Wannan haɗin canja wurin bayanai shine rabi - yanayin sadarwa na duplex.Na'urar za ta iya aikawa ko karɓar bayanai kawai a wani lokaci da aka bayar.Bayan an kafa hanyar sadarwa ta hanyar sadarwa ta hardware, ana buƙatar amincewa da ka'idar bayanai tsakanin na'urorin watsa bayanai ta yadda ƙarshen karɓa zai iya rarraba bayanan da aka karɓa, wanda shine manufar "la'auni".Yarjejeniyar sadarwa tana da daidaitaccen tsarin ƙa'idar yarjejeniya, kuma samfuranmu duk suna amfani da daidaitaccen ƙa'idar Modbus-RTU.Rs-485 matsakaicin nisa na sadarwa yana kusan 1219m, a cikin ƙananan sauri, ɗan gajeren nesa, babu wani lokaci na tsangwama da zai iya amfani da layin murɗaɗi na yau da kullun, akasin haka, a cikin babban sauri, watsa layin dogon, dole ne a yi amfani da matching impedance (gaba ɗaya 120 ω). ) Kebul na musamman na RS485, kuma a cikin matsananciyar tsangwama ya kamata kuma a yi amfani da kebul mai kariya mai sulke mai sulke.
Lokacin aikawa: Jul-22-2022