4.2 RS-422/485
䆒㕂
JetCon 2201-w/2201-iw
ᦤկ
5-pin DIP
ᢼⷕᓔ݇⫼Ѣ䗝ᢽ
RS-422/485
䗮䆃ᓣࡴ䕑
120 ohm
㒜ッ⬉䰏DŽ
DIP
ᢼⷕᓔ݇ⱘ䆒㕂བϟ㸼᠔⼎DŽ䖯㸠
RS-422
RS-485
䖲㒓Пࠡˈ䇋ᇚܜ
DIP
ᢼ
ⷕᓔ݇䆒㕂ࠄℷ⹂ԡ㕂DŽ
ϔϾぎ䯆ⱘ
multi-drop RS-485
㔥㒰Ёˈ᠔᳝㡖⚍ഛЎⲥ
(
ᬊ
)
ᓣDŽℸᚙމϟˈ㔥㒰Ё
≵᳝⌏ࡼⱘ偅ࡼDŽ᮴ӏԩ偅ࡼⱘ㔥㒰ˈ㒓䏃ⱘ⢊ᗕᰃⶹⱘDŽ
JetCon 2201
ᦤկأय़⬉䰏䗝ᢽࡳ
㛑ˈֱᣕ
RX+
RX-
᳝
200mV
⬉य़DŽབᵰ㔥㒰㡖⚍䖒
32
Ͼˈ佪㡖⚍㡖⚍䳔㽕ᓔਃأय़⬉
䰏ֱᣕ
RX+/-
ⱘ᳔ৢԡܗ⢊ᗕDŽ
120Ω
㒜ッ⬉䰏Џ㽕⫼ऍ䜡㒓䏃䰏ᡫˈབᵰ㒓䏃䰏ᡫϡऍ䜡ˈӮ᳝䚼ߚֵোডᇘಲӴ䕧㒓䏃ˈ
㗠ᑆᡄ䗮䆃DŽৠ⧚ˈ㒜ッ⬉䰏ҙ䳔ࡴ䕑
multi-drop RS-485
㔥㒰ⱘ佪㡖⚍㡖⚍DŽ
ᦣ䗄
RS-422
RS-485 4-wire
RS-485 2-wire
RX +/- Terminator (120Ω)
RX+/- Biasing (150KΩ)
RX+/- Biasing (1KΩ)
SW1
Off
On
On
X
X
X
SW2
Off
Off
On
X
X
X
SW3
X
X
X
On
X
X
SW4
X
X
X
X
Off
On
SW5
X
X
X
X
Off
On
1
ON
2 3 4 5
4.3
䖲
RS-422
RS-485
Іষ
JetCon 2201
䜡
1
Ͼ
7-pin
ⱘৃᢚौ㒓ῑˈᦤկ
RS-422/RS-485 2-wire
4-wire
䗮䆃䖲DŽ
ϟ߫Вњ
RS-422, RS-485
ⱘ䖲㒓⼎ᛣDŽ
RS-485
ᬃᣕ
2/4-wire master-slave
䗮䆃ᓣˈ
master-slave
㒧ᵘЁ᳝ϔϾ㡖⚍䋳䋷Ͼ
slave
㡖⚍থᏗྨᠬˈᑊ໘⧚
slave
ⱘড作DŽ
Slave
㡖⚍
≵᳝ᬊࠄ
master
㡖⚍ⱘ䇋∖߭ϡӮӴ䕧᭄DŽ
multi-drop
І㸠㔥㒰ЁˈϾ
slave
䳔㽕᳝ଃϔⱘ
ഄഔDŽ
