[Aipu-Waton] Ndeupi musiyano uripo pakati peRs.232 uye Rs.4885?

Serial kutaurirana protocol anotamba basa rakakosha mukubatanidza zvishandiso uye kugonesa data rekuchinjana. Zviyero zviviri zvinoshandiswa zvakanyanyaRS232uyeRs485. Ngatisurure mumisiyano yavo.

· RS232Protocol

The theRS232Interface (inozivikanwawo seTia / EIA-232) yakagadzirirwa kudzora kutaurirana kwechokwadi. Iyo inofambisa kuyerera kwedata pakati nepakati pe data terminal michina (DTE), senge termisals kana transmitters, uye data yekutaurirana (dhaya). Heano mamwe mimwe mapoinzi eRs.232:

1. Maitiro ekushanda:

   • RS232inotsigira zvese zviri zviviriyakazara-duplexuyeHafu-duplexmodes.
   • Mune yakazara-duplex mode, data inogona kutumirwa uye yakagashirwa panguva imwe chete uchishandisa mafaira akasiyana ekutapurirana uye kugamuchira.
   • Muhafu-duplex mode, mutsara mumwe unoshanda zviri zviviri zvinoparidza uye kugamuchira mabasa, kubvumira kana imwe panguva.

2. Kutaurirana kure:

   • Rs.232 yakakodzerazvipfupi madaroNekuda kwekugumira mune Signal Simba.
   • Madaro akareba angaguma nekushatisa chiratidzo.

3. Voltage mazinga:

   • RS232 inoshandisayakanaka uye isina kunaka voltage mazingazvekusaina.

4. Nhamba yeVatendi:

   • MaRs232 tambo kazhinji inosanganisira9 Wires, Kunyangwe vamwe vanobatana vanogona kushandisa 25 waya.

· RSARD485 protocol

The theRs485 or EIA-485protocol inogamuchirwa zvakanyanya mumaindasitiri marongero. Iyo inopa akati wandei zvakanakira Rs.232:

1. Multi-point tipology:

   • Rs485inobvumiraVazhinji vanogamuchira uye transmitterskubatanidzwa mubhazi rimwe chete.
   • Kutapurirana kwedata kunoshandisamasaini akasiyanazvekuenderana.

2. Maitiro ekushanda:

   • Rs485interfaces ne2 vatengesishanda mukatiHafu-duplex mode, chete kutumira kana kugamuchira data panguva yakapihwa.
   • Rs485interfaces ne4 Contactsinogona kumhanya mukatiyakazara-duplex mode, kuita kuti kuendesa panguva imwe chete uye kugamuchira.

3. Kutaurirana kure:

   • Rs485inodarika mukatiKutaurirana kwenguva refu.
   • Izvo zvakanakira zvekushandisa uko zvishandiso zvinoparadzaniswa nenzvimbo dzakakosha.

4. Voltage mazinga:

   • Rs485inoshandisakusiyanisa voltage kusaina, kuishandira ruzha kusadzivirirwa.

Mune pfupiso, maRs232 iri nyore kune zvinobatanidza zvishandiso pamusoro pematanho mapfupi, nepoRs485inobvumira akawanda midziyo pane rimwe bhazi pane kure kure.

Ramba uchifunga kuti Rs.232 Zviteshi zvinowanzoitika pane akawanda maPC uye maPCS, nepoRs485Zviteshi zvinogona kuda kutengwa zvakasiyana.