标签: 422

串口通信（232，485，422）以及常见问题

AddaLossofSignal(LOS)IndicatortoYourRS-485orRS-422TransceiverApplicationNote1593Author:JeffLiesAddaLossofSignal(LOS)IndicatortoYourRS-485orRS-422TransceiverIntroductionRxFailsafeAdesirablefeatureonanynetworkmaybeaLossofSignalInRS-485/RS-422terminology,“failsafe”isusedtoindicate(LOS)indicator.SuchanindicatoralertsamonitoringcontrollerRxfunctionalitythatdrivestheRxoutputtoaknownstatethatapotentiallyseriousnetworkerrorhasoccurred,thereby……