USB to RS485 converter / adapter Convertitore / adattatore USB RS485

 

 

 

Full Duplex (4 wires)
JP1 close 2-3
1.J2    B  Tx  RS485
2.J2    A  Tx  RS485
1.J1    B  Rx  RS485
2.J1    A  Rx  RS485
4.J1    GND

Half-Duplex (2 wires)
JP1 close 1-2
1.J1    B  RxTx  RS485
2.J1    A  RxTx  RS485
4.J1    GND

JP2     = 120R terminator on 1 end 2 of J1
1 end 2 of J1 protectec with termofuse and varisor
3.J1    +5V out    (from USB) - Use it with caution.
4.J1    GND