RS-485 (ujongano converter): Lo mzobo kunye nenkcazo

RS-485 - yinto uhlobo transducer esetyenziswa networks mveliso. Kwakhona asetyenziswe imigca umehluko. Amaninzi kukho nenguqulo USB-isinxibelelanisi. Umgaqo esebenza ngayo iseli yakhelwe phezu ugqithiselo data ngokuthumela pulses njalo.

Converters kwahluka phakathi yokuqala i parameter yenkcaso yemveliso. Kufuneka kwakhona kukhunjulwa ukuba imifuziselo zenziwa nge eyahlukileyo rate data. Ukuze siyiqonde ngakumbi kuzo, kufuneka ucinge ukulungisa iintambo.

uqhagamshelo Standard lokuguqulela

Yesiqhelo circuit uqhagamshelo inverter ibandakanya resistors self-zokulawula kunye olwandisa. Eyona thyristor kakhulu ezisetyenziswayo ngokuqhelekileyo uhlobo yodayalo ye-EGPRS. Ukwenzela ukuphepha sithwalisa inethweki, kusetyenziswa amacwecwe. Kwezinye iimeko, ukudluliselwa ekhwele kagesi uhlobo valve ityhubhu. Xa zizonke, lo mxokelelwane ungaba kuze capacitors ezintlanu. Kwi-avareji, lo ukuvimba yemveliso lingaphantsi kwe-5.5 ohms. Xa siqwalasela i mveliso RS-485 yekhompyutha kunye ikheswa galvanic, kukho kusetyenziswa extender ukubetha.

Model kwi ibhithi 100 ngomzuzwana

Converter RS-232/485 esibonakalayo olu hlobo edityaniswe kuphela nge transceiver. Kulo mzekelo, ubude ubuninzi ingxenye eyodwa ayidluli 1200 NM. Kwi-avareji, ukusetyenziswa yangoku parameter ilingana 130 Ma. Ukuba sicinga RS-485 Converter Ethernet ujongano ngaphandle wegazi, ngoko wasebenzisa msindo buffer.

Isixhobo eyenzelwe ukudibanisa ezona transceiver ezintlanu. Kulo mzekelo, amandla umqondiso ixhomekeke Ngalamandla akhoyo okugqiba. RS-485 ujongano cable inika 200 MV logic-zero level. Lobuzaza ukuxubana kuxhomekeke kuphela kuhlobo transceiver.

Devices ibhithi 300 ngomzuzwana

Uguqulo hlobo ziyilelwe, njengoko umthetho, kwinkxaso akukho transceiver ngaphezu ezintlanu. Kuba isixhobo isiqingatha-kabini exchange data sifanelekile kakuhle. izinto ezidityanisiweyo ikakhulu ngenxa msindo ephambili. Xa zizonke, lo mxokelelwane ayisetyenziselwa capacitors ezingaphezu kwezintathu. Kwi-avareji converters rate wabulala abe ngaphezulu kwe-1 V microsecond nganye. Wegazi zisetyenziswa kuphela uhlobo ukubetha. Ukuba sicinga RS-422/485 (i-interface converter) ukuba imodem yekhebhuli, ngoko ke kusebenza kwivelufa tube electromagnetic. Ukuphazamisa kwiisekethe enjalo waphawula kaninzi. Kufuneka kuqatshelwe ukuba inqanaba logic omnye, kwi-avareji ilingana 150 MV.

Iimfaniso 600 ibhithi ngomzuzwana

Aplikheyishini Converter RS-485 USB isetyenziselwa olu hlobo kweekhebhile modem. Ubude ingxenye eliphezulu kulo mzekelo ilingana no 1300 NM. Isixhobo ukugqithisa kumacala amabini lwe data kahle. Uvakalelo avareji ye-converters ehla ayidluli 210 MV. Wabulala Rate ilingana malunga 1.2 ukuya microseconds.

iinguqulelo kokuxhuma zinokwenziwa ngokusebenzisa msindo buffer okanye resistor. Xa siqwalasela kuqala ukhetho kule meko akakwazi ukwenza ngaphandle wire thyristor. Kubalulekile ukuba uqaphele ukuba capacitor ukulungele ukuba elibonakayo kuphela. Ukuba sicinga Converter lojongano RS-485 resistors USB, ngoko isebenzisa uhlobo ivalve tube electromagnetic. Kulo mzekelo, i ukuvimba imveliso le nkqubo ngonyaka ngeenxa 4.6 ohms.

10 transceiver Models

Converters 10 transceiver kuba imveliso eliphezulu amanzi parameter. Izixhobo ezifanelekileyo yale hlobo ukugqithisa data ibhidi. ukusetyenziswa Ipharamitha zangoku kwi-avareji ilingana 230 Ma. Izinga datha amasuntswana ngaphantsi kwe 130 intshizi ngesekondi. models zezona kwiinkqubo ezenzekelayo.

Wabulala uphawu izinga ukusuka transducer ayidluli 1.3 V xa microseconds. Lobuzaza kubangela kule meko babambanayo mncinci kakhulu. Ngqo kokuxhuma izixhobo kwenzeka nge uhlobo resistor adjustable okanye extender. Ukuba sicinga ngobuwena yokuqala, kulo mzekelo, Asinakuyenza ngaphandle transceiver olutshintshayo. Uqhagamshelwano nge olwandisa ngokuqhelekileyo ngokuphawulekayo ukwandisa inqanaba zero ubhalo.

Scheme 13 transceiver

Converter RS-232/485 transceiver 13 kuhlangene le nqanawa. I-avareji izicwangciso zangoku obuselelwa isixhobo 120 Ma. Ukunciphisa ingozi yokuphazamiseka isicelo trimmer. Thyristors zichazwe ngokubanzi uhlobo socofo.

Ngqo wesampula isetyenziswe kunye msindo. Kuba inxenye-kabini unxibelelwano, converters ezinjalo afaneleka kahle. Lokumelana output avareji zingagqithi 4.5 ohms. Lobuzaza kubangela kulo mzekelo ilingana hayi ngaphezulu kwe 170 MV.

converters 50mA

RS-485 (ujongano converter) 50 ma ilungele kuphela kwiinkqubo ezenzekelayo. A isici esasenza umfuziselo lowo uthathwa ukuba ukudluliswa data ngesantya esiphezulu. Ngqo ukudibanisa i iinguqulelo wenziwe nge yodwa galvanic. Kulo mzekelo, uvakalelo le ndachithelwa umkhulu 150 MV. inqanaba Logic zero ilingana 230 MV. Ukuba sicinga isixhobo kunxibelelwano kumacala amabini, baye basebenzisa uhlobo ukubetha extender. Ngenxa yoko, le transceiver yinto efanelekileyo inamandla kuphela.

Converters 120 MA

RS-485 (ujongano converter) kwi-120 Ma ixhulumane nge transistors engayi. Ukuba sicinga uguqulelo kunye nenkqubo bonisa, ngoko ke babe transceiver olutshintshayo. Kuba isixhobo isiqingatha-kabini exchange data sifanelekile kakuhle. Bonke bayakwazi ukudibanisa ukuya transceiver ezilishumi. Njengomgaqo, inqanaba logic omnye ngaphantsi kwe 130 MV.

Kulo mzekelo, inani abaqhubi kuxhomekeke ngamandla lo mshini engundoqo. Extender kusetyenziswa uhlobo kakhulu uyibona. Ubude ubuninzi ingxenye eyodwa ilingana 1300 NS. Izixhobo lweenkqubo esizisebenzelayo kahle. ngokuqhelekileyo wabulala uphawu rate ayidluli 1.1 V microsecond nganye.

uhlobo isixhobo isiqingatha-kabini

RS-485 (ujongano converter) ekwaziyo wesiqingatha-kabini-uhlobo transistor enxulumene nge ikhowudi. Ukuze benze oku, lo thyristor isetyenziswa ne lo mshini ephambili. Transceiver kusebenza zombini obuluqilima kunye uhlobo lwefildi. Imveliso ukuvimba kumphathi wesekethe ayidluli 5.4 ohms. Esi salathisi lombane yangoku avareji ilingana 130 Ma. data Imiboniso reception kule meko inikwa umgangatho.

Isantya transfer ifayile ayidluli 100 ibhithi ngomzuzwana. Uvakalelo le ndachithelwa kwinqanaba 230 MV. Kubalulekile ukuba uqaphele ukuba uqhagamshelwano transducer kungaba nge podstrochenny extender. Kulo mzekelo, i resistor na uhlobo adjustable efanelekileyo. Ngqo thyristor wazisebenzisa angabe umsindo. Xa zizonke, kukho amathathu capacitor wesekethe.

ukuguqulwa umehluko

Umahluko RS-485 (ujongano converter) zisetyenziswa kuphela imodem intambo. Ebonisa idatha reception kulo mzekelo inikwa. converters Power kwizibuko yusb. Imifuziselo inkxaso Abaninzi "windose 7" kunye XP. Izinga ukusetyenziswa zangoku ulingana akukho ma ngaphezulu kwe-190. A logic level omnye akakho ngaphezu kwama-90 MV.

Ukuqhagamshela isixhobo lisetyenziswa hayi capacitors kuphela, kodwa resistors kunye entsimini. kwinqanaba Logic zero, njengoko umthetho, ayidluli 120 MV. Isantya yomqondiso kolu hlobo modeli uphezulu kakhulu. Rate Uvakalelo ndachithelwa Converter lojongano RS-485 (RS-232) yi kwinqanaba 170 MV. Izinga wabulala lingaphantsi kwe-1.2 V microsecond nganye.

Udibaniso nge extender zokusebenza

Ukuba sicinga iintambo ngokusebenzisa lo mshini okusebenza, kubalulekile ukuqaphela ukuba ixabiso ukusetyenziswa yangoku mayingagqithi 200 Ma. Ekuqaleni chain yi ibhokisi terminal. Le thyristor lisetyenziswa kuphela ezimbalwa capacitors. inkqubo nje ezimbini electrode sibonelelwe. Le transistor okufanelekileyo kuphela iindidi khowudi. Kulo mzekelo, inqanaba logic omnye ayidluli 150 MV. yokukhulisa ephakathi ukuze iziphaluka loo nto ezifanelekileyo. Zonke kuqhagamshelaniswa nge-inverter ayikho transceiver ngaphezu ezintandathu.

converter Single-uphela kunye olwandisa

RS-485 interface Converter nge wegazi-ended single kufuneka ukuba iintambo modem. Bonisa inkqubo ufumana idata evela imizekelo ziyafumaneka uhlobo diode. I-avareji ukusetyenziswa yangoku ngaphantsi kwe 230 Ma. izixhobo Ifanele kuphela isiqingatha-kabini exchange data. Izinga transfer data ayidluli 120 ibhithi ngomzuzwana.

Kubalulekile ukuba uqaphele ukuba imifuziselo kusetyenziswa ukukhusela inkqubo esuka ombane aphezulu. Ngoko nangoko isixhobo enikwe zibuko yusb. Rate Uvakalelo ndachithelwa, nge-avareji ilingana 160 MV. Isantya yomqondiso imifanekiso kakhulu eliphezulu. Le transceiver lodwa ombane ezisetyenziswa uhlobo olutshintshayo. Ezijongene ikakhulu isicelo eziphahle umsindo. Splitter RS-485 imveliso ukuvimba lingaphantsi kwe-5.8 ohms.

Ukusetyenziswa resistors avulekileyo

Devices zenziwa kunye resistors evulekileyo 120 no 200 Ma. uxhulumaniso ngqo yenziwe nge Iimpahla zebhokisi terminal. Imifuziselo Power senziwa kwizibuko yusb. RS drive efanelekileyo 485 kunxibelelwano data isiqingatha-kabini. yokukhulisa eziphangaleleyo ezinqabileyo kakhulu kwiinkqubo yalo hlobo. Wegazi ngokuqhelekileyo kusetyenziswa uhlobo ukubetha. Kwi-avareji, kumgangatho logic omnye ulingana akukho ngaphezulu kwe-135 MV. Ubude ubuninzi ingxenye eyodwa ngeenxa 1300 NM.

Ukusebenzisa transceiver yomtshangatshangiso

Ukulungiswa ukuya transceiver yomtshangatshangiso ezifanelekileyo zombini isiqingatha-kabini kunye nonxibelelwano ibhidi. Isantya transfer data kulo mzekelo ilingana malunga 230 ibhithi ngomzuzwana. isixhobo Itotali iyakwazi ukuxhasa malunga ezilishumi transceiver. Ubude avareji ingxenye eyodwa ayidluli 1400 NM. Ngenxa yoko, isilawuli se lilingana uxhathiso we-5.1 ohms. Izinga wabulala kulo mzekelo zixhomekeke kudidi umsindo.