[Aipu-Waton] Yintoni umahluko phakathi kwe-Rs232 ne-Rs485?

Iiprotocol zonxibelelwano ze-serial zidlala indima ebalulekileyo ekunxibelelaneni kwezixhobo kunye nokwenza ukuba idatha yotshintshiselwano. Imigangatho emibini ngokubanzi esetyenzisiweyo yileI-Rs232kwayeI-Rs485. Masibe senze ngokwamahluko abo.

· I-Rs232Iprotocol

II-Rs232Isinxibelelanisi (sikwabizwa ngokuba yi-TIA / EIA-232) yenzelwe unxibelelwano lwe-serial. Iququzelela ukuhamba kwedatha phakathi kwezixhobo ze-terminal yedatha (i-DTE), ezinje ngeetoti okanye iivenkile, kunye nezixhobo zonxibelelwano zedatha (DCE). Nazi ezinye iindawo eziphambili malunga ne-Rs232:

1. Indlela yokusebenza:

   • I-Rs232ixhasa zombiniI-duppex epheleleyokwayeisiqingatha-duppexiindlela.
   • Kwimowudi egcweleyo epheleleyo, idatha inokuthunyelwa kwaye ifunyenwe ngaxeshanye isebenzisa iingcingo ezahlukeneyo zosulelo kunye nokwamkelwa.
   • Kwimowudi ye-Deplex ye-Deppex, umgca omnye usebenza zombini ukuhambisa kunye nokufumana imisebenzi, ukuvumela enye ngexesha.

2. Umgama woNxibelelwano:

   • I-Rs232 ilungeleimigama emifutshanengenxa yokusikelwa umda kumandla empawu.
   • Imigama emide inokubangela ukonakaliswa komqondiso.

3. Amanqanaba eevolthi:

   • I-Rs232 isebenzisaamanqanaba e-voltage kwaye engalungangaukusayina.

4. Inani labafowunelwa:

   • I-RS232 intambo iquletheIingcingo ezi-9, nangona ezinye izinxibelelanisi zinokusebenzisa iingcingo ezingama-25.

IProtokholi yoMgaqo-nkqubo

II-Rs485 or EIA-485Iprotocol yamkelwa ngokubanzi kuseto lwemizi-mveliso. Inika izibonelelo ezininzi kwi-Rs232:

1. I-Topology yamanqaku amaninzi:

   • I-Rs485ivumelaAbamkeli abaninzi kunye nokuhambisaukuqhagamshelwa kwibhasi enye.
   • Ukuhanjiswa kwedathaIimpawu ezahlukeneyoukungqinelana.

2. Indlela yokusebenza:

   • I-Rs485iAbafowunelwa 2sebenza ngaphakathiImowudi ye-duppex, ukuthumela ngokukodwa okanye ukufumana idatha ngexesha elinikiweyo.
   • I-Rs485iAbafowunelwa 4inokuqhubaImowudi ye-Deppex egcweleyo, ukuvunyelwana nokuhambisa kunye nokwamkelwa.

3. Umgama woNxibelelwano:

   • I-Rs485igqwesa ngaphakathiUnxibelelwano lomgama omde.
   • Ilungele izicelo apho izixhobo zisasazeka kumgama obalulekileyo.

4. Amanqanaba eevolthi:

   • I-Rs485isebenzisaI-Voltial Voltage, ukuphucula ukugonyamela ingcwamo.

Ngesishwankathelo, i-RS232 ilula yokuqhagamshela izixhobo ngaphezulu kwemigama emifutshane, ngelixaI-Rs485ivumela izixhobo ezininzi kwibhasi enye ngaphezulu komgama omkhulu.

Khumbula ukuba amabuko angama-ERS232 ahlala esemgangathweni kwii-PC ezininzi kunye nee-PLC,I-Rs485Izibuko zinokufuna ukuthengwa ngokwahlukeneyo.