RS485 Bus Connection
RTU Plug RS485 Wiring
RS
48
5 A
/+
RS
48
5 B/
-
RS
48
5 0V
Shield – Only connect on one end of cable!
Belden 9481 (120Ω Cable)
Modbus
Master
RS485 A/+
RS485 B/-
RTU
Module
RTU
Module
RTU
Module
120Ω
Termination
High Bus Pull
Low Bus Pull
120Ω
Termination