SLLSFG3 May 2020 THVD1428
PRODUCTION DATA.
An RS-485 bus consists of multiple transceivers connecting in parallel to a bus cable. To eliminate line reflections, each cable end is terminated with a termination resistor, RT, whose value matches the characteristic impedance, Z0, of the cable. This method, known as parallel termination, allows for higher data rates over longer cable length.
Figure 20. Typical RS-485 Network With Half-Duplex Transceivers