a.Swihlawulekisi swa ntirho: Tirhisa vuhlanganisi bya nkarhi wa xiviri lebyi hlamulaka exikarhi ka tihoste timbirhi na hlonga rin’we, ku seketela tinxaka to hambana ta tiphrothokholi ta vuhlanganisi bya serial; Nseketelo wa protocol mahala ntirho wo hundzisela erivaleni.
b.Swihlawulekisi swa Serial Port: Swi seketela tihakelo ta baud ta 1200, 2400, 4800, 9600, 19200, 38400, na 57600bps; Ku seketela ku kamberiwa ka parity; 1 kumbe 2 wa swiphemu swo yima, na swin’wana.
c.Parameter ya nkarhi wo rindza ya nhlamulo ya mahlonga i ya ku tihlawulela.
d.Parameter ya nkarhi wo hlwela yo rhumela swileriso swa host i ya ku tihlawulela.
e.Cinca tipharamitha ta serial port hi ku tirhisa software ya mupfuni wa serial port debugging.
g.Application : Industrial fieldbus yi tirhisa ti host timbirhi ku hlaya hi nkarhi wun’we 485 slave network data, leyi faneleke eka swiyimo swa vuhlanganisi bya nkarhi wa xiviri.
2.Two main na rin'we hlonga 485 server gateway isolator (ATM) .
a.Swihlawulekisi swa ntirho: . Tirhisa ntirho wa sevha ya 485 leyi hlamulaka exikarhi ka tihoste timbirhi na hlonga rin’we, ku seketela phurotokholo ya MODBUS RTU.
b.Swihlawulekisi swa xiporo xa serial: . Yi seketela tihakelo ta baud ta 1200, 2400, 4800, 9600, 19200, 38400, na 57600bps; Ku seketela ku kamberiwa ka parity; 1 kumbe 2 wa swiphemu swo yima, na swin’wana.
c.Parameter ya nkarhi wo rindza ya hlonga i ya ku tihlawulela.
d.Nkarhi wo rhumela ku hlwela ka host i wa ku tihlawulela.
na.Hardware ya xiporo xa master na slave: RS485.
f.Cinca tiparameter hi ku tirhisa mupfuni wa serial debugging.
g.Xikombelo: . Industrial fieldbus yi tirhisa ti host timbirhi ta 485 ku hlaya hi nkarhi wun’we 485 wa switirhisiwa swa netiweke ya mahlonga, leswi faneleke eka vuhlanganisi exikarhi ka switirhisiwa swa MODBUS RTU. Ku seketela switirhisiwa swo tala eka switirhisiwa swa nxaxamelo na swa cascading, yi nga tirha tanihi xitirhisiwa xa relay xa ku hundziseriwa ka mpfhuka wo leha ka vuhlanganisi bya 485.
3.485 ku ya eka analog gateway isolator
a.Swihlawulekisi swa ntirho: . Data yi nyikiwa hi 485 port, naswona gede yi hundzula data yi va linear 4-20mA analog output. Ku seketela protocol ya MODBUS RTU.
b.Swihlawulekisi swa xiporo xa serial: . Yi seketela ti baud rates ta 1200, 2400, 4800, 9600, 19200, 38400, na 57600bps.
c.Ku lulama ka vuhumelerisi bya current ya analog i 0.1%.
d.Tinxaka ta datha ta nseketelo: . Nhlayo leyi heleleke ya 2-byte kumbe nomboro ya 4-byte floating-point, na nkongomiso wa sayizi ya data lowu lulamisiwaka.
na.Kuna software ya xitirhisiwa xo lulamisa lexi tinyiketeleke ku cinca ti parameters.
f.Hardware ya xiporo xa host: RS485. Hardware ya mahlonga yi humesa swikombiso swa analog swa 4-20mA.
g.Xikombelo : . Xitirhisiwa xa gede xi amukela 485 wa datha hi xivumbeko xa phurotokholo ya MODBUS RTU, xi hlahluva datha, naswona hi linear xi yi hundzula eka vuhumelerisi bya sweswi bya analog 4-20mA, lebyi rhumeriwaka eka xitirhisiwa xa DCS.