[AIPU-WATON] Menene Bambanci Tsakanin RS232 da RS485?

Ka'idojin sadarwar serial suna taka muhimmiyar rawa wajen haɗa na'urori da ba da damar musayar bayanai. Ma'auni biyu da ake amfani da su sosaiSaukewa: RS232kumaSaukewa: RS485. Bari mu shiga cikin bambance-bambancen su.

· Saukewa: RS232Yarjejeniya

TheSaukewa: RS232dubawa (wanda kuma aka sani da TIA/EIA-232) an ƙera shi don sarrafa sadarwar serial. Yana saukaka kwararar bayanai tsakanin Kayan Tashar Bayanai (DTE), kamar tasha ko masu watsawa, da Kayan Sadarwar Bayanai (DCE). Ga wasu mahimman bayanai game da RS232:

1. Yanayin Aiki:

   • Saukewa: RS232yana goyon bayan duka biyucikakken duplexkumarabin duplexhalaye.
   • A cikin cikakken yanayin duplex, ana iya aika bayanai da karɓa lokaci guda ta amfani da wayoyi daban don watsawa da karɓa.
   • A cikin yanayin rabin-duplex, layi ɗaya yana aiki duka watsawa da karɓar ayyuka, yana ba da damar ko ɗaya a lokaci ɗaya.

2. Nisa Sadarwa:

   • RS232 ya dace dagajeriyar nisasaboda iyakancewa a cikin ƙarfin sigina.
   • Tsawon nisa na iya haifar da lalacewar sigina.

3. Matakan Voltage:

   • Saukewa: RS232tabbatacce kuma korau matakan ƙarfin lantarkidon sigina.

4. Adadin Lambobi:

   • Kebul na RS232 yawanci ya ƙunshi9 wayoyi, ko da yake wasu na'urorin haɗi na iya amfani da wayoyi 25.

· RS485 yarjejeniya

TheSaukewa: RS485 or Saukewa: EIA-485An karɓo yarjejeniya sosai a cikin saitunan masana'antu. Yana ba da fa'idodi da yawa akan RS232:

1. Multi-Point Topology:

   • Saukewa: RS485damarmasu karɓa da masu watsawa da yawada za a haɗa a kan bas guda.
   • watsa bayanai yana aikisigina daban-dabandon daidaito.

2. Yanayin Aiki:

   • Saukewa: RS485musaya tare da2 lambobin sadarwayi aiki a cikiyanayin rabin duplex, kawai aikawa ko karɓar bayanai a wani lokaci da aka ba.
   • Saukewa: RS485musaya tare da4 lambobin sadarwaiya guduyanayin cikakken duplex, ba da damar watsawa da liyafar lokaci guda.

3. Nisa Sadarwa:

   • Saukewa: RS485yayi fice a cikisadarwa mai nisa.
   • Yana da manufa don aikace-aikace inda na'urori ke bazuwa a cikin nisa masu mahimmanci.

4. Matakan Voltage:

   • Saukewa: RS485amfanisiginar wutar lantarki daban, haɓaka garkuwar amo.

A taƙaice, RS232 ya fi sauƙi don haɗa na'urori akan ɗan gajeren nesa, yayin daSaukewa: RS485yana ba da damar na'urori da yawa akan bas ɗaya fiye da nisa mafi girma.

Ka tuna cewa tashoshin jiragen ruwa na RS232 galibi suna daidaita akan PC da PLC da yawa, yayin daSaukewa: RS485ana iya buƙatar siyan tashoshin jiragen ruwa daban.