SENA PS400 - Manual (Page 64)

64
HelloDevice
Device
N
N=max 31
Device
1
Data-(1)
Data+(9)
120 Ω
…
Data- Data+ Data- Data+
Device
N-1
120 Ω
Data-
Data+
RS485
Figure A-6 RS485 wiring diagram
Device
N-1
Device
N
N=max31
Tx-(1)
Tx+(9)
120 Ω
…
120 Ω
Rx-
Rx+
Rx-(3)
Rx+(4)
120 Ω 120 Ω
Tx-
Tx+
RS422
Device
1
Rx- Rx+ Tx- Tx+ Rx - Rx+ Tx- Tx+
HelloDevice
Figure A-7 RS422 wiring diagram