Gịnị bụ Rs-485 interface? Kedu ihe eji atụnyere agwa ya na interface Rs-232? N'ihi usoro nke ọkọlọtọ Rs-232-C. (2) ọnụego nnyefe adịghị ala. Ke Asynchronious nnyefe, ọnụego bad 20kbps. (3) Interface na-eji ahịrị mgbaàmà na akara nrịba ama iji mepụta mpempe akwụkwọ nnyefe. Nke nnyefe a na-arị nkịtị na-adịkarị mfe ihe a na-ahụkarị, yabụ na nnyonye anya mkpọtụ adịghị ike. (4) A na-agabiga ebe a. Uru ọkọlọtọ nke ogologo nnyefe dị 50 n'ụkwụ, mana enwere ike iji ya mee ihe dịka mita 50. N'ihi mgbanwe nke Rs-232-C, ụfọdụ ụkpụrụ nzuzo ọhụụ etinyere, Rs-485 bụ otu n'ime ha. O nwere njirimara ndị a: 1 A na-anọchi anya eriri "0" na-anọchi anya ahịrị voltaji dị n'etiti ahịrị abụọ ahụ dị ala karịa nke RT-232-C. 2. Ọnụ ahịa nnyefe data kachasị elu nke Rs-485 bụ 10 MB PS3. Industface Rs-485 bụ ngwakọta nke ọkwọ ụgbọ ala na nnata dị iche iche, nke na-eme ka ikike ọtụụ nnọkọ mgbochi A na-ahụkarị, ya bụ, na mgbochi mkpọtụ mkpọtụ dị mma. 4. Akụkụ ọkọlọtọ nke akụkụ nnyefe kachasị nke Rs-485 bụ 4,000 ụkwụ, nke nwere ike iru 3,000 mita. Na mgbakwunye, a na-ahapụ Rsterface Rinterface naanị iji jikọọ otu traatteiver na bọs, nke ahụ bụ, ikike ịnọ otu ebe. Nchọpụta Rs-485 na-enye ohere njikọ ruru 128 travers na bọs. Nke ahụ bụ, o nwere ikike nke ọtụtụ ọdụ, nke mere na ndị ọrụ nwere ike guzosie netwọkụ akụrụngwa ngwa ngwa site na iji otu interface Rs-485. Rs-485 interface bụ ihe achọrọ maka ihe mgbochi mkpọtụ ya, ogologo nnyefe na ikike ọtụtụ. N'ihi na netwọk-nke ọkara nke Rs485 na-achọ wires abụọ, Rs485 interfaces niile na-agagharị. A na-eji akụkụ 9-core plug nke DB-9 maka njikọta nke RB485 (oghere), na DB-9 (PIN) maka interboard interface Rs485 ejikọtara na keyboard.