I-RS485 ngumgangatho wombane ochaza umaleko obonakalayo wojongano, njengeprothokholi, ixesha, idatha yothotho okanye enxuseneyo, kunye namakhonkco onke achazwa ngumyili okanye umgangatho ophezulu weprothokholi.I-RS485 ichaza iimpawu zombane zabaqhubi kunye nabamkeli abasebenzisa i-balanced (ekwabizwa ngokuba yi-different) imigca yokudlulisa amanqaku amaninzi.
Iingenelo
1. Ukuhanjiswa okungafaniyo, okwandisa ukugonywa kwengxolo kunye nokunciphisa i-radiation radiation;
2. Iikhonkco zomgama omde, ukuya kuthi ga kwi-4000 yeenyawo (malunga ne-1219 yeemitha);
3. Izinga ledatha ukuya kwi-10Mbps (ngaphakathi kwee-intshi ezingama-40, malunga neemitha ezili-12.2);
4. Abaqhubi abaninzi kunye nabamkeli banokudityaniswa kwibhasi enye;
5. Uluhlu olubanzi lwemowudi eqhelekileyo luvumela ukungafani okukhoyo komhlaba phakathi komqhubi kunye nommkeli, okuvumela ubuninzi be-voltage yemowudi eqhelekileyo -7-12V.
Inqanaba lomqondiso
I-RS-485 inokuqhuba ukuhanjiswa komgama omde ngokuyintloko ngenxa yokusetyenziswa kweempawu ezahlukeneyo zokusasaza.Xa kukho ukuphazamiseka kwengxolo, umahluko phakathi kweempawu ezimbini kumgca usengasetyenziselwa ukugweba, ukwenzela ukuba idatha yokudlulisa ingaphazanyiswa yingxolo.
Umgca wokuhlukana kwe-RS-485 uquka iimpawu ze-2 ezilandelayo
A: Umqondiso ongabuyi umva
B: Umqondiso wokubuyela umva
Kusenokubakho umqondiso wesithathu ofuna indawo yesalathiso eqhelekileyo kuyo yonke imigca elungeleleneyo, ebizwa ngokuba yi-SC okanye i-G, ukuze imigca elungeleleneyo isebenze ngokufanelekileyo.Lo mqondiso unokunciphisa isignali yendlela eqhelekileyo efunyenwe ekupheleni kokufumana, kwaye i-transceiver iya kusebenzisa lo mqondiso njengexabiso lokubhekisela ukulinganisa i-voltage kumgca we-AB.Umgangatho we-RS-485 ukhankanya:
Ukuba I-MAK (ingqiqo 1), amandla ombane ophawu lomgca B angaphezulu kunomgca A
Ukuba i-SPACE (logic 0), umgca A wombane womqondiso uphezulu kunomgca B
Ukuze ungabangeli ukungavisisani, ingqungquthela yamagama eqhelekileyo yile:
TX+ / RX+ okanye D+ endaweni ka-B (umqondiso 1 uphezulu)
TX-/RX- okanye D- endaweni ka-A (inqanaba eliphantsi xa umqondiso 0)
I-Threshold Voltage:
Ukuba i-transmitter input ifumana i-logic ephezulu (DI = 1), umgca we-voltage A uphezulu kunomgca we-B (VOA> VOB);ukuba i-transmitter input ifumana i-logic low level (DI=0), umgca we-voltage A uphezulu kunomgca we-B (VOA> VOB);Umbane we-B uphezulu kunomgca A (VOB>VOA).Ukuba i-voltage yomgca A kwigalelo lommkeli liphezulu kunomgca we-B (VIA-VIB> 200mV), ukukhutshwa kommkeli yinqanaba eliphezulu lengqiqo (RO = 1);ukuba i-voltage yomgca we-B kwigalelo lommkeli uphezulu kunomgca A (VIB-VIA> 200mV), ummkeli ophuma kwi-logic level low (RO=0).
Umthwalo weyunithi (UL)
Inani eliphezulu labaqhubi kunye nabamkeli kwibhasi ye-RS-485 kuxhomekeke kwiimpawu zabo zomthwalo.Yomibini imithwalo yomqhubi kunye nomamkeli ilinganiswa ngokumalunga nomthwalo weyunithi.Umgangatho we-485 umisela ukuba ubuninzi beyunithi ye-32 yomthwalo inokudityaniswa kwibhasi yothutho.
Imo yokusebenza
Ujongano lwebhasi lunokuyilwa ngezi ndlela zimbini zilandelayo:
Isiqingatha-Duplex RS-485
Full-Duplex RS-485
Ngokumalunga nolungelelwaniso lweebhasi ezinesiqingatha-eziphindwe kabini njengoko kubonisiwe kumzobo ongezantsi, idatha inokukhutshelwa kuphela kwicala elinye ngexesha.
Ulungelelwaniso olupheleleyo lwebhasi oluphindwe kabini luboniswe kumzobo ongezantsi, luvumela iindlela ezimbini zonxibelelwano ngaxeshanye phakathi kweenkosi kunye neendawo zamakhoboka.
Ukupheliswa kwebhasi kunye noBude beSebe
Ukuze ugweme ukubonakalisa umqondiso, umgca wokuhanjiswa kwedatha kufuneka ube nesiphelo xa ubude bekhebula bude kakhulu, kwaye ubude besebe kufuneka bufutshane kangangoko kunokwenzeka.
Ukupheliswa ngokuchanekileyo kufuna isichasi sokuphelisa i-RT esihambelana nesici se-impedance Z0 yomgca wothumelo.
Umgangatho we-RS-485 ucebisa ukuba i-Z0=120Ω yentambo.
Iziqu zentambo zihlala zipheliswa ngee-resistors eziyi-120Ω, enye kwisiphelo ngasinye sentambo.
Ubude bombane wesebe (umgama we-conductor phakathi kwe-transceiver kunye ne-cable trunk) kufuneka ube ngaphantsi kwesinye seshumi sexesha lokunyuka kwe-drive:
LStub ≤ tr * v * c/10
LStub= ubukhulu besebe ubude ezinyaweni
v = umlinganiselo wesantya apho umqondiso uhamba khona kwintambo ukuya kwisantya sokukhanya
c = isantya sokukhanya (9.8*10^8ft/s)
Ubude besebe obude kakhulu buza kubangela ukukhutshwa kophawu lokubonisa ukuchaphazela ukungasebenzi.Lo mzobo ulandelayo luthelekiso lobude besebe elide kunye neeforms zobude besebe elifutshane:
Umlinganiselo weDatha kunye noBubude beNkomfa:
Xa usebenzisa amanani aphezulu edatha, sebenzisa kuphela iintambo ezimfutshane.Xa usebenzisa amanani aphantsi edatha, iintambo ezinde zingasetyenziswa.Ukusetyenziswa kwesantya esisezantsi, ukuxhathisa kweDC kwentambo kunciphisa ubude bentambo ngokongeza umda wengxolo ngokuhla kwamandla ombane kwintambo.Xa usebenzisa usetyenziso lwezinga eliphezulu, iziphumo ze-AC zomgangatho wesignali yomda wentambo kunye nobude bomda wekhebula.Eli nani lingezantsi libonelela ngegophe elilondolozayo lobude bekhebula kunye nezinga ledatha.
I-Shenzhen Zhongling Technology Co., Ltd. (i-ZLTECH), ukususela ekusekweni kwayo kwi-2013, izinikele kwishishini le-robot enamavili, ukuphuhlisa, ukuvelisa nokuthengisa ii-wheel hub servo motors kunye nokuqhuba ngokusebenza okuzinzileyo.Abaqhubi bayo beemoto ze-servo hub eziphezulu ze-ZLAC8015, i-ZLAC8015D kunye ne-ZLAC8030L bamkele unxibelelwano lwebhasi ye-CAN/RS485, ngokulandelelana ukuxhasa i-CiA301, i-CiA402 sub-protocol/modbus-RTU protocol ye-CANopen protocol, kwaye inokunyuka ukuya kwi-16 izixhobo;inkxaso yokulawula isikhundla, ukulawula isantya kunye nokulawula i-torque kunye nezinye iindlela zokusebenza, ezifanelekileyo kwiirobhothi kwiimeko ezahlukeneyo, ukukhuthaza kakhulu ukuphuhliswa kweshishini le-robot.Ukuze ufumane inkcazelo engakumbi malunga ZLTECH kaThixo hub hub servo drives, nceda ingqalelo: www.zlrobotmotor.com.
Ixesha lokuposa: Aug-04-2022