Moxa Technologies Industio CI-134 Series Industrial Serial Board RS-422 ユーザーズマニュアル
Connection Cable and Cable Wiring
Industio CI-134 Series User’s Manual
5-3
RS-485 Cable Wiring
The RS-485 standard is an enhanced version of the RS-422 balanced line standard. It
allows multiple drivers and receivers in a multidrop systems. As many as 32 drivers
and 32 receivers can be put on any multidrop system.
allows multiple drivers and receivers in a multidrop systems. As many as 32 drivers
and 32 receivers can be put on any multidrop system.
The CI-134 Series supports only 2-wir e half-duplex RS-485 communication.
Data+/- pins are served for both data transmitting and receiving, depending on the
RTS signal.
Data+/- pins are served for both data transmitting and receiving, depending on the
RTS signal.
RS-485 pin outs for CI-134:
CI-134
1
Data-(A)
2
Data+(B)
5
GND
Multidrop RS-485 Half-duplex
CI-134
RS-485 Device 1
Master
Slave
2
Data+(B)
Data+(B)
1
Data-(A)
Data-(A)
5
GND
GND
RS-485 Device N
Slave
Data+(B)
Data-(A)
GND
Slave
Data+(B)
Data-(A)
GND
See the section “RS-485 Pr ogr amming” of the chapter “Ser ial Pr ogr amming
Tools” for more RS-485 programming details.
Tools” for more RS-485 programming details.
1 Data-(A)
2 Data+(B)
2 Data+(B)
5 GND