I-RS-485 iyindinganiso yokuxhumana enamaphuzu amaningi e-differential signaling, evame ukusetshenziswa izintambo ezimbili ezisontekile (izintambo ezimbili eziyinhloko) ukuze kudluliselwe idatha. Izinyathelo zokuxhuma ezinemininingwane zokuxhuma idivayisi e-serial ku-interface ye-RS-485 ye-aI-Moxaidivayisi yilena elandelayo:
Isinyathelo 1: Qinisekisa i-Device Interface kanye ne-Pin Definitions
Izincazelo zephini zingase zihluke phakathi kwemikhiqizo ehlukene yamadivayisi. Kunconywa ukuthi uxhumane nomkhiqizi ofanele ukuqinisekisa izincazelo zephini ezifanele ngaphambi kokufaka izintambo!
I-MOXAimikhiqizo ikakhulukazi inezinhlobo ezintathu ezilandelayo zamachweba alandelanayo:
Uchungechunge lwezintambo ze-DB 9 interface kanye namamodeli asebenzayo ami kanje:
Uchungechunge lwezintambo ze-interface ye-RJ 45 kanye namamodeli asebenzayo alandelayo
Uchungechunge lwezintambo ze-terminal interface kanye namamodeli asebenzayo alandelayo:
Isinyathelo 2: Xhuma Usebenzisa Amakhebula
Isimo 1: Ukuxhuma idivayisi ye-Moxa kudivayisi eyodwa ye-RS-485. Uma uxhuma idivayisi ye-Moxa kanye nedivayisi elandelanayo, xhuma amaphini amahle (B) kumaphini amahle (B) kanye namaphini amahle (A) kumaphini amahle (A).
Isimo 2: Uma uxhuma idivayisi ye-MOXA kumadivayisi amaningi e-RS-485, kufanele kusetshenziswe uxhumano lwe-daisy-chain. Zonke iziphetho ze-A(+) zamadivayisi zixhunywe ngokuhambisana nomugqa webhasi omuhle, futhi zonke iziphetho ze-B(-) zamadivayisi zixhunywe ngokuhambisana nomugqa webhasi omubi.
Isimo 3: Ama-resistor okuqeda kudingeka engezwe. Uma i-NPort ine-resistor yokuqeda eyakhelwe ngaphakathi (isb., i-resistor yokuqeda eyakhelwe ngaphakathi ye-NPort 5450 ingavulwa nge-switch ye-DIP (ngokuvamile i-SW 3 iyi-switch yokuvimbela yokuqeda), khona-ke i-resistor yokuqeda kuphela okudingeka yengezwe ekugcineni kwesixhumanisi, njengoba kuboniswe kumdwebo ongezansi.
Isimo 4: Uma i-NPort ingenayo i-termination resistor eyakhelwe ngaphakathi, ingafakwa kuzo zombili izinhlangothi zesixhumanisi se-RS-485, ngentambo eboniswe kumdwebo ongezansi.
Isikhathi sokuthunyelwe: Ephreli-29-2026