[AIPU-WATON] Ndeupi Musiyano Pakati peRS232 neRS485?

Seri yekukurukurirana mapuroteni anoita basa rakakosha mukubatanidza zvishandiso uye kugonesa kuchinjanisa data. Zviyero zviviri zvakashandiswa zvakanyanya ndizvoRS232uyeRS485. Ngationgororei mukusiyanisa kwavo.

· RS232Protocol

TheRS232interface (inozivikanwawo seTIA/EIA-232) yakagadzirirwa kudzora serial kutaurirana. Inofambisa kuyerera kwedata pakati peData Terminal Equipment (DTE), senge materminals kana transmitters, uye Data Communications Equipment (DCE). Heano mamwe mapoinzi akakosha nezve RS232:

1. Mashandiro:

   • RS232inotsigira zvoseyakazara-duplexuyehafu-duplexmodes.
   • Mune yakazara-duplex mode, data inogona kutumirwa uye kugamuchirwa panguva imwe chete uchishandisa waya dzakasiyana dzekufambisa uye kugamuchira.
   • Mune hafu-duplex modhi, mutsara mumwechete unoshanda ese ekufambisa uye ekugamuchira mabasa, achibvumira chero imwe panguva.

2. Nhaurirano Distance:

   • RS232 inokodzeramadaro mapfupinekuda kwekugumira musimba rechiratidzo.
   • Madaro marefu anogona kukonzera kuderedzwa kwechiratidzo.

3. Voltage Levels:

   • RS232 inoshandisapositive uye negative voltage levelsyekusaina.

4. Nhamba Yevanosangana

   • Tambo yeRS232 kazhinji ine9 waya, kunyange zvimwe zvinobatanidza zvingashandisa 25 waya.

RS485 Protocol

TheRS485 or EIA-485protocol inogamuchirwa zvakanyanya mumaindasitiri. Inopa mabhenefiti akati wandei pamusoro peRS232:

1. Multi-Point Topology:

   • RS485inobvumiraakawanda anogamuchira uye anotumirakuti ubatanidzwe mubhazi rimwe chete.
   • Kutumira data kunoshandazviratidzo zvakasiyananokuda kwekuenderana.

2. Mashandiro:

   • RS485interfaces ne2 contactskushanda muhafu-duplex mode, kutumira kana kugamuchira data chete panguva yakatarwa.
   • RS485interfaces ne4 contactsanogona kumhanya achipindafull-duplex mode, inogonesa kutapurirana uye kugamuchira panguva imwe chete.

3. Nhaurirano Distance:

   • RS485anopfuura mukatikutaurirana kureba.
   • Yakanakira maapplication uko maturusi akapararira munzvimbo dzakakosha.

4. Voltage Levels:

   • RS485inoshandisadifferential voltage signing, kuwedzera kudzivirirwa kweruzha.

Muchidimbu, RS232 iri nyore yekubatanidza zvishandiso pamusoro pemafanha mapfupi, ukuRS485inobvumira midziyo yakawanda mubhazi rimwe chete pamusoro pemadaro akakura.

Ramba uchifunga kuti RS232 ports inowanzojairika pamaPC mazhinji uye maPLC, nepoRS485zviteshi zvingada kutengwa zvakasiyana.