Imbobo yezokuxhumana ye-RS485 iyincazelo yehadiwe yamachweba okuxhumana.Imodi yokufaka izintambo yechweba le-RS485 iku-topology yamabhasi, futhi amanodi aphezulu angama-32 angaxhunywa ebhasini elifanayo.Kunethiwekhi yokuxhumana ye-RS485 ngokuvamile isebenzisa imodi yokuxhumana yesigqila, okungukuthi, umsingathi onezigqila eziningi.Ezimweni eziningi, izixhumanisi zokuxhumana ze-rS-485 zimane zixhunywe esiphethweni esithi “A” kanye “B” sokuxhumana ngakunye ngepheya lamakhebuli asontekile.Lolu xhumo lokudlulisa idatha luyimodi yokuxhumana eyi-duplex.Idivayisi ingathumela noma yamukele idatha kuphela ngesikhathi esinikeziwe.Ngemuva kokuthi kusungulwe isixhumi esibonakalayo sokuxhumana kwezingxenyekazi zekhompuyutha, iphrothokholi yedatha idinga ukuvumelana phakathi kwamathuluzi okudlulisa idatha ukuze isiphetho sokwamukela sikwazi ukudlulisa idatha etholiwe, okuwumqondo "wephrothokholi".Iphrothokholi yezokuxhumana inefomethi yephrothokholi ejwayelekile ehlanganisiwe, futhi imikhiqizo yethu yonke isebenzisa iphrothokholi ejwayelekile ye-Modbus-RTU.Ibanga eliphakeme lama-Rs-485 lokuxhumana limayelana ne-1219m, ngesivinini esiphansi, ibanga elifushane, azikho izikhathi zokuphazamiseka ezingasebenzisa ulayini osontekile ojwayelekile, ngokuphambene, ngesivinini esikhulu, ukudluliselwa kolayini omude, kufanele kusetshenziswe ukufanisa okuhambisanayo (ngokuvamile 120 ω ) Ikhebula elikhethekile le-RS485, futhi esimweni esinzima sokuphazamiseka kufanele futhi kusetshenziswe ikhebula elivikelekile elisontekile elinezivikelo eziqinile.
Isikhathi sokuthumela: Jul-22-2022