[AIPU-WATON] Phapano ke efe lipakeng tsa RS232 le RS485?

RS485 VS RS232

[AIPU-WATON] Phapano ke Efe Pakeng tsa RS232 le RS485?

 

Li-protocol tsa puisano tsa serial li bapala karolo ea bohlokoa ho hokahanya lisebelisoa le ho nolofalletsa phapanyetsano ea data. Litekanyetso tse peli tse sebelisoang haholo liRS232leRS485. A re ke re hlahlobeng ho khetholla ha bona.

 

· RS232Protocol

TheRS232segokanyimmediamentsi sa sebolokigolo (eo hape e tsejoang e le TIA/EIA-232) e etselitsoe ho laola likhokahano tsa serial. E nolofatsa phallo ea data lipakeng tsa Thepa ea data (DTE), joalo ka liteishene kapa li-transmitters, le Lisebelisoa tsa Khokahano ea Lintlha (DCE). Lintlha tsa bohlokoa mabapi le RS232 ke tsena:

  1. Mokhoa oa ts'ebetso:

    • RS232e tšehetsa ka bobelie tletseng duplexlehalofo-duplexmekhoa.
    • Ka mokhoa o felletseng oa duplex, data e ka romelloa le ho amoheloa ka nako e le 'ngoe ho sebelisoa mehala e arohaneng bakeng sa phetiso le kamohelo.
    • Ka mokhoa oa halofo ea duplex, mohala o le mong o sebeletsa ho fetisa le ho amohela mesebetsi, ho lumella e 'ngoe ka nako.
  2. Bohole ba puisano:

    • RS232 e loketse bakeng sasebaka se sekgutshwaneka baka la mefokolo ya matla a sesupo.
    • Maeto a malelele a ka bakang phokotso ea matšoao.
  3. Maemo a Voltage:

    • RS232 e sebelisamaemo a matle le a mabe a motlakasebakeng sa pontsho.
  4. Nomoro ea Mabitso:

    • Mohala oa RS232 hangata o na le9 lithapo, leha lihokelo tse ling li ka sebelisa lithapo tse 25.

· RS485 Protocol

TheRS485 or EIA-485protocol e amoheloa haholo maemong a indasteri. E fana ka melemo e mengata ho feta RS232:

  1. Multi-Point Topology:

    • RS485lumellabaamoheli ba bangata le li-transmittersho hokeloa beseng e le nngwe.
    • Phatlalatso ea data e sebetsamatšoao a fapanengbakeng sa ho tsitsisa.
  2. Mokhoa oa ts'ebetso:

    • RS485likhokahano le2 mabitsosebetsa kamokhoa oa halofo-duplex, ho romela kapa ho amohela data feela ka nako e itseng.
    • RS485likhokahano le4 mabitsoka matha ka haremokhoa o felletseng oa duplex, e nolofalletsang phetiso le kamohelo ka nako e le 'ngoe.
  3. Bohole ba puisano:

    • RS485e ipabola hopuisano e hole.
    • E loketse lits'ebetso moo lisebelisoa li hasaneng libakeng tse kholo.
  4. Maemo a Voltage:

    • RS485tshebedisophapang ea matla a pontšo, ho matlafatsa tšireletso ea lerata.

 

Ka kakaretso, RS232 e bonolo bakeng sa ho hokela lisebelisoa libakeng tse khutšoane, ha u ntse uRS485e lumella lisebelisoa tse ngata ka beseng e le 'ngoe libakeng tse hole.

Hopola hore likou tsa RS232 hangata li tloaelehile ho li-PC le li-PLC tse ngata, atheRS485likou li ka hloka ho rekoa ka thoko.


Nako ea poso: Apr-29-2024