Izibuko lonxibelelwano lwe-RS485 yinkcazo yehardware yamazibuko onxibelelwano.Imodi yocingo ye-RS485 port ikwi-topology yebhasi, kwaye ubuninzi bee-nodes ze-32 zinokudibaniswa kwibhasi enye.Kuthungelwano lonxibelelwano lwe-RS485 ngokubanzi lwamkela imo yonxibelelwano yenkosi-khoboka, oko kukuthi, umkhosi onamakhoboka amaninzi.Kwiimeko ezininzi, iilinki zonxibelelwano ze-rS-485 ziqhagamshelwe ngokulula “ku-A” kunye no-“B” ekupheleni kojongano ngalunye nge-A pair of twisted pair cables.Olu qhagamshelo logqithiso lwedatha luyisiqingatha - imo yonxibelelwano oluphindwe kabini.Isixhobo sinokuthumela okanye sifumane idatha kuphela ngexesha elithile.Emva kokuba i-interface yonxibelelwano ye-hardware isungulwe, i-protocol yedatha kufuneka ivumelane phakathi kwezixhobo zokudlulisa idatha ukwenzela ukuba isiphelo sokufumana sinokucazulula idatha efunyenweyo, eyona ngcamango "yeprotocol".Iprothokholi yonxibelelwano inefomathi yeprotocol edityanisiweyo, kwaye iimveliso zethu zonke zisebenzisa iprotocol eqhelekileyo yeModbus-RTU.I-Rs-485 umgama omkhulu wonxibelelwano malunga ne-1219m, kwisantya esiphantsi, umgama omfutshane, akukho zihlandlo zokuphazamiseka ezinokusebenzisa umgca wesibini ojijekileyo, ngokuchaseneyo, ngesantya esiphezulu, ukuhanjiswa komgca omde, kufuneka kusetyenziswe ukuhambelana kwe-impedance (ngokubanzi 120 ω ) Intambo ekhethekileyo ye-RS485, kwaye kwindawo enzima yokuphazamiseka kufuneka isetyenziswe intambo ekhuselweyo enezikrweqe eziphothiweyo.
Ixesha lokuposa: Jul-22-2022