a.Nitsumɔ mli nibii: Kɛ be mli sanegbaa ni haa mɔ he jɔɔ lɛ atsu nii yɛ gbɔi enyɔ kɛ nyɔŋ kome teŋ, ni eyeɔ ebuaa sanegbaa he gbɛjianɔtoi srɔtoi ni nyiɛɔ sɛɛ; Fiɔ protokɔl nitsumɔ ni mli ka shi faŋŋ sɛɛ.
b.Serial Port Nibii: Efiɔ baud ni ji 1200, 2400, 4800, 9600, 19200, 38400, kɛ 57600bps sɛɛ; Fiɔ parity kwɛmɔ sɛɛ; 1 loo 2 kpamɔ bibii, kɛ ekrokomɛi.
c.Be ni akɛmɛɛɔ kɛha nyɔŋ hetoo lɛ ji nɔ ni mɔ fɛɛ mɔ halaa.
d.Be ni akɛbaatsu nii kɛha host famɔi lɛ ji nɔ ni mɔ fɛɛ mɔ halaa.
e.Tsakemɔ serial port paramitai kɛtsɔ serial port debugging yelikɛbualɔ sɔftwɛɛ nɔ.
g.Application : Industrial fieldbus kɛ host enyɔ tsuɔ nii ni ekɛkaneɔ 485 nyɔŋ network data yɛ be kome mli, ni sa kɛha be mli sanegbaa shihilɛi.
2.Enyɔ titri kɛ nyɔŋ kome 485 sɛɛva shinaa isolator (ATM)
a.Nitsumɔ nibii: 485 sɛɛva nitsumɔ ni haa hetoo lɛ atsu nii yɛ gbɔi enyɔ kɛ nyɔŋ kome teŋ, ni fiɔ MODBUS RTU protocol lɛ sɛɛ.
b. Serial port sui: 1200, 2400, 4800, 9600, 19200, 38400, kɛ 57600bps; Fiɔ parity kwɛmɔ sɛɛ; 1 loo 2 kpamɔ bibii, kɛ ekrokomɛi.
c.Mɛmɔ be paramita kɛha nyɔŋ lɛ ji nɔ ni mɔ fɛɛ mɔ halaa.
d.Host lɛ sɛɛkuu be ni akɛmajeɔ lɛ ji nɔ ni mɔ fɛɛ mɔ halaa.
kɛ.Nuŋtsɔ kɛ nyɔŋ tsɔne: RS485.
f.Tsakemɔ paramitai kɛtsɔ serial debugging yelikɛbualɔ nɔ.
g.Nibimɔ: Nitsumɔhe fieldbus lɛ kɛ 485 hosts enyɔ tsuɔ nii ni ekɛkaneɔ nyɔŋyeli tsɔnei 485 yɛ be kome mli, ni sa kɛha sanegbaa ni yaa nɔ yɛ MODBUS RTU tsɔnei ateŋ. Ekɛ nibii babaoo ni yɔɔ sɛɛkuu kɛ nitsumɔi ni nyiɛɔ sɛɛ mli lɛ yeɔ ebuaa, ni ebaanyɛ etsu nii akɛ tsɔne ni akɛhaa 485 sanegbaa ni yaa shɔŋŋ lɛ.
3.485 kɛya analog shinaa lɛ naa
a.Nitsumɔ nibii: 485 port lɛ ji nɔ ni kɛ saji haa, ni shinaa lɛ tsakeɔ saji lɛ ewoɔ linear 4-20mA analog kpojiemɔ mli. Efiɔ MODBUS RTU gbɛjianɔtoo lɛ sɛɛ.
b. Serial port sui: Efiɔ baud yibɔi ni ji 1200, 2400, 4800, 9600, 19200, 38400, kɛ 57600bps sɛɛ.
c.Analog ŋmɛnɛŋmɛnɛ nibii ni jɛɔ mli baa lɛ jalɛsaneyeli ji 0.1%.
d.Fi data henɔi asɛɛ: 2-byte yibɔ ni yeɔ emuu loo 4-byte yibɔ ni hoɔ, kɛ data dalɛ gbɛtsɔɔmɔ ni abaanyɛ atsake.
kɛ.Ayɛ gbɛjianɔtoo dɛŋdade sɔftwɛɛ ko ni ato he gbɛjianɔ ni akɛtsakeɔ paramitai.
f.Host ŋshɔkpɔ lɛ nɔ nibii: RS485. Nyɔŋ hardware lɛ jieɔ analog okadii ni ji 4-20mA kpo.
g.Nibimɔ : 485 ni yɔɔ MODBUS RTU protocol gbɛjianɔtoo lɛ mli lɛ, ekwɛɔ saji lɛ amli, ni etsakeɔ lɛ linearly kɛyaa analog 4-20mA ŋmɛnɛŋmɛnɛ nibii ni jeɔ kpo lɛ amli, ni akɛmajeɔ DCS tsɔne lɛ.