Hi Max,
Since this board is only taking a TTL signal and shifting it to RS485 levels, the baud rate is decided entirely by the device at the end. Is it a passive or active RS485 to Ethernet converter? i.e. is it just connecting RS485 to the twisted pairs in a CAT5/6 cable, or is it actually sending info over TCP or something? If it’s the former, then you want the baudrate of the device at the other end of the CAT5/6 cable. If it’s the latter, then the RS485 to Ethernet converter will likely have a set of baud rates it prefers.
Out of interest, what’s the end goal of your system? Could you just use an Ethernet Shield, or just run your RS485 over twisted pair straight out of this converter?
-James
