Hello,
I use your schematic, the clean last one on the post , but i do not get data from one port to other
All i get is echo on each side.
I made it eaxactly like in your schematic but i am lost
I tested the rs232, before i connect the rs485 and they send/receive to each other OK and no echo.
When i connect the rs485 chip , it is a texas sn75bc184, i just get a perfect echo on each side, but data is not going from one side to other
I have just two nodes, each having a 120 ohms resistor as terminator, and i installed your pull up/down resistors
Please help if you can
It is rdiculos because it is a such simple and elegant circuit, but i have no luck
Thanks