Muri enterineti yibintu, mugihe cyose uri injeniyeri yashyizwemo, muri rusange uzahura na RS232, RS485, TTL ibi bitekerezo.
Waba warahuye niki gitekerezo kuri Baidu shakisha, hepfo kugirango utegure RS232 na RS485, itandukaniro rya TTL.
Ibiranga amashanyarazi biranga RS232 Umuvuduko wumurongo uwo ariwo wose wibimenyetso muri RS-232-C ni umubano mubi.
Ni ukuvuga, logique "1 ″ ni -3 kugeza -15V, naho logique" 0 ″ ni kuva 3 kugeza 15V.RS-232-C ihuza muri rusange ifite icyitegererezo cya DB-9 gifata ibyuma, mubisanzwe ucomeka kumpera ya DCE hamwe na socket kumpera ya DTE.Icyambu cya RS-232 cya PC ni 9-yibanze ya inshinge.Ibikoresho bimwe bihujwe na RS-232 kuri PC kubera ko hakenewe imirongo itatu yimbere gusa, aribyo "kohereza amakuru TXD", "kwakira amakuru RXD" na "signal-to-ground GND" udakoresheje ikimenyetso cyo kugenzura imiyoboro ya irindi shyaka.
Umugozi wohereza RS-232 ukoresha ikingira ikingiwe.
Ibiranga amashanyarazi biranga RS485 (ubu bikunze gukoreshwa cyane) RS485 ikoresha ibimenyetso bitandukanye byerekana ibimenyetso bibi, logique ya “1 ″ igaragazwa nu itandukaniro rya voltage iri hagati yimirongo yombi nka - (2 kugeza 6) V, na logique“ 0 ″ ihagarariwe na voltage itandukaniro hagati yimirongo ibiri nkuko wongeyeho (2 kugeza 6) V. Urwego rwibimenyetso rwerekana intera iri munsi ya RS-232-C, ntabwo byoroshye kwangiza imiyoboro yumuzingi wa interineti, kandi urwego ruhuye na urwego rwa TTL, rushobora guhuzwa byoroshye na TTL umuzenguruko.
RS-485 ifite igipimo ntarengwa cyo kohereza amakuru ya 10Mbps.
Urwego rwa TTL urwego rwa TTL rukoreshwa cyane kuko amakuru asanzwe yerekana ni binary, hamwe na 5V ihwanye na logique "1 ″ na 0V ihwanye na logique" 0 ″, izwi nka ttl (transistor-transistor logic urwego Transistor-Transistor Logic) Sisitemu.
Ubu ni tekinoroji isanzwe yo gutumanaho hagati yibice byigikoresho bigenzurwa na mudasobwa.
Itandukaniro riri hagati ya RS232 na RS485, TTL
1, RS232, RS485, TTL bivuga urwego rusanzwe (ikimenyetso cyamashanyarazi)
2, urwego rwa TTL ni urwego rwo hasi 0, urwego rwo hejuru ni 1 (hasi, logique isanzwe ya sisitemu yumuzingi).
3, urwego rwa RS232 ni urwego rwiza rwa 0, urwego rubi rwa 1 (kubutaka, ibyiza nibibi 6-15V birashobora kuba, ndetse hamwe na leta irwanya cyane).4, RS485 na RS232 birasa, ariko gukoresha ibimenyetso bitandukanye byerekana ibimenyetso, bikwiranye nintera ndende, yihuta.
Igihe cyoherejwe: Nyakanga-24-2019