Modbus communication: Wiring diagram for conversion of RS-485 2 wire to 4 wire


#1

Modbus communication: Wiring diagram for conversion of RS-485 2 wire to 4 wire.


#2

I am trying to connect Floboss 107 to CentumVP (ALR121) but no success. (Wiring Diagram attached)

Can anybody help me?


#3

Positive to Positive: TX+/RX+ connects to A
Negative to Negative: Tx-/Rx- connects to B


#4

This connection was working.