Hello,

I have an RS485 based bus, with one Tx and one Rx units. I'm using a bus terminating resistors of 133 ohms on each of the bus sides. Now, i need to add a ready made Rx unit to the same bus, Which have a built-in termination resistors (about 120 ohms). Can i use the transmission bus successfully with two termination resistors at each side and another one in the middle of the bus? Pls note that all resistors are obligatory and i can not uninstall them from devices.

Please advice if possible.

Yours,