Umsebenzi oyintloko womguquli we-485 kukuguqula isibonakaliso esisodwa se-RS-232 sibe yi-RS-485 okanye i-RS-422 elinganayo. Ngenxa yokuhanjiswa kolwazi lomgama omde kunye nobuchule obunamandla bokuchasana nokuphazamiseka, abaguquli be-rs485 basetyenziswa ngokubanzi kunxibelelwano lokhuseleko kunye neminye imimandla. Nangona kunjalo, abasebenzisi bahlala bedibana nokuphazamiseka komqondiso. Ke, yintoni ebangela ukuba isiginali ye-rs485 iphazanyiswe?

1. Ukuphazamiseka okuhambelanayo, okuvela ngokuyintloko kwindlela engafanelekanga yokulinganisa umthwalo. Ngokomzekelo, umgca wesignali ude kakhulu, zininzi (umgama omde) i-wiring yeenkwenkwezi, umthwalo omningi, akukho nkqubo yokuchasana nokuchasana, njl., ebangela ukuba inkqubo isebenze kakuhle kwaye ingaphumeleli ukusebenza ngokuzinzileyo.

2. Uphazamiseko oluqinileyo lwemowudi eqhelekileyo. Le meko idla ngokubangelwa ukunyanzeliswa ngokuthe ngqo okanye ngokungathanga ngqo kwezixhobo zokufumana kwiindawo ezahlukeneyo, okubangela unxibelelwano phakathi komgca wesignali kunye "nomhlaba wezixhobo" okanye "isixhobo somhlaba wedijithali" (ngokuqhelekileyo i-50 Hz) Ibangelwa ngumqondiso ogqithiseleyo. Ulwamkelo lwentsebenzo ngamanye amaxesha alukho, okanye alufumaneki ngalo lonke ixesha. Ngaphezu koko, ulwamkelo lwedatha alunakuqondwa ukuba umgama phakathi kokufumana kunye nokuthumela imitha enye.

3. Ukungaphumeleli kwe-Hardware, ngokuqhelekileyo ngenxa yokuba kukho imbali yombane ophezulu kumgca (ukubetha umbane, ukuvuza), kubangela iingxaki kunye ne-rs485 converter chip yesixhobo somntu ngamnye kwinkqubo, echaphazela ukwamkelwa ngokubanzi.

4. Iimpazamo zomgca, ezifana nesiphaluka esifutshane sengingqi okanye isiphaluka esiphukileyo kumgca wesignali, kaninzi yenza inkqubo isebenze kwindawo okanye isebenze ngokuqhelekileyo, kodwa umsebenzi awuzinzile.