Apparatus for controlling bias resistor to be joined ??485 communication circuit

摘要

By the present invention relates to a bias resistance adjuster is connected to the RS485 communication line is used as data transmission media (transmission media), to feed back the voltage between the transmission side and the receiving side signal automatically adjusts the bias resistor to the RS485 network communication system It is capable of maintaining a stable voltage communication between the transmitting side and the receiving side signal line.