添加一个失去信号(LOS)指示你的RS - 485或RS - 422收发

Add a Loss of Signal (LOS) Indicator to Your RS-485 or RS-422 Transceiver
Application Note 1593
Author: Jeff Lies


Add a Loss of Signal (LOS) Indicator to Your RS-485 or
RS-422 Transceiver
Introduction Rx Failsafe
A desirable feature on any network may be a Loss of Signal In RS-485/RS-422 terminology, “failsafe” is used to indicate
(LOS) indicator. Such an indicator alerts a monitoring controller Rx functionality that drives the Rx output to a known state
that a potentially serious network error has occurred, thereby