[Aipu-waton] phapang e pakeng tsa Rs232 le Rs485?

Protocol ea serial ea serial e bapala karolo ea bohlokoa ho lisebelisoa le ho khothaletsa phapanyetsano ea data. Melao e 'meli e sebelisitsoeng haholo keRS232MmeRs485. Ha re hlahlobe linthong tsa bona.

· RS232Protocol

TheRS232Knoene (e tsejoa hape e le Tia / EIA-232) e etselitsoe ho laola puisano ea serial. E thusa ho phalla ha data pakeng tsa lisebelisoa tsa data (dte), joalo ka li-termini kapa lisebelisoa le lisebelisoa tsa puisano tsa data (DE). Mona ke lintlha tsa bohlokoa ka Rs232:

1. Mokhoa oa Ts'ebetso:

   • RS232ea ts'ehetsa ka bobeliduplex e felletsengMmeHalf-duplexmekhoa.
   • Ka mokhoa o felletseng oa duplex, data e ka romelloa mme e amohetse ka nako e le 'ngoe e sebelisa lithapo tse arohaneng tsa phetisetso le kamohelo.
   • Ka mokhoa oa Half-Duplex, mola o le mong o sebetsa le ho fumana mesebetsi, o lumella e mong ka nako.

2. Sebaka sa puisano:

   • RS232 e loketselibaka tse khutšoaneka lebaka la mefokolo ka matla a lets'oao.
   • Maapalelele a nako e telele a ka baka ho nyopisa letšoao.

3. Maemo a Voltage:

   • RS232 e sebelisamaemo a matle le a fosahetsengbakeng sa ho supa.

4. Palo ea mabitso:

   • Cable ea Rs232 hangata e na leLithapo tse 9, leha lihokelo tse ling li ka sebelisa lithapo tse 25.

Protocol protocol

TheRs485 or Eia-485Protocol e amoheloa hohle maemong a indasteri. E fana ka melemo e 'maloa e fetang Rs232:

1. Multi-Bangt Topology:

   • Rs485E lumellaBarekisi ba bangata le li-transmittersho hokahanngoa ka bese e le 'ngoe.
   • LITLHAKISO TSA BOPHELOmatšoao a fapaneng a fapanengbakeng sa ho tsitsipana.

2. Mokhoa oa Ts'ebetso:

   • Rs485LITLHAKISO TSAMabitso a mabelisebetsa kahareMokhoa oa Half-Duplex, e romella kapa ho amohela data ka nako e fanoeng.
   • Rs485LITLHAKISO TSALikamano tse 4e ka kenaMokhoa o felletseng oa Duplex, e khothaletsa phetiso le kamohelo e ts'oanang le ho amoheloa.

3. Sebaka sa puisano:

   • Rs485e ipabolaPuisano e telele.
   • E loketse lits'ebetso tseo lisebelisoa li hasang hole le libaka tsa bohlokoa.

4. Maemo a Voltage:

   • Rs485e sebelisoaLetšoao le fapaneng le se fapaneng la Voltage, ho ntlafatsa madi a lerata.

Ka kakaretso, RS232 e bonolo bakeng sa lisebelisoa tse hokahanyang ho feta hole le hole le holeRs485e lumella lisebelisoa tse ngata bese e le 'ngoe ho feta libaka tse kholo.

Hopola hore likoung tsa Rs232 hangata li lula li le maemong a mangata a pcs le plcs, atheRs485likou li ka hloka ho rekoa ka thoko.