ASYNC 232↔422/485 CONVERTER
backTheS1-4:settingtoEcOS1thetransmiffn-4oModeforwitchEchoOSettingS1nffdevice-4determines(half-duplexwhethermodetheonly)Converter. echoesdata
carrier,On”orTheS1-5:settingCarrierOS1“Contrlledmultipffn-5for-Conoswitchint,ConSettingrorhardwarebytrolledstantlyOnS1MRTS-5thoddetermines.”byThisRTS-handshakingsettingwhetherallowsapplicationstheforcarrieroperation.is“Constantlyinswitched-
receivers | NOTE | drop,impedance |
| |
Carrier s ON when RTS is asse ted positive, and OFF | ly wh RTS is |
driven to a nega ve voltage. | | |
Themay16KohmsupS1-6:to31seRS1ttinglectffnO-6.eitherByforImpedaselectingswitchLowHighSettinga“low”one(120S1(16Kcetheroper-imedanceap6(Tohms)selectsplicationrm nation)thetypical)impedancefor.ofimpedance120ohmsoeachfrtheinput“high”therereceivermay.Yubeof
SwitchesConverterduplex1-7andS1Oonlyffn-S17is-.-78:in2and-OS1wireS1nff-8-8/4orare-wire4-wireset24Setting-Mwiremodetogetheroperatingmoded s todetermine.Note:whether2-wirethemodeishalf-
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