here is a PCB design of 485 - serial Bus Converter ... its totally isolated ... use orcade guyz ... -here is a PCB design of 485- serial Bus Converter ... its totally isolated ... use orcade guyz ...

基于PC串口232和485之间的通信转换，protel的PCB图附带原理图-232 to 484 that uart of computer

485电子电路图，可参考后直接转化为PCB图就可以直接使用了-485 electronic circuit, reference can be directly into a PCB map can be used directly.