RS-232DALI桥接口

TheDigitallyAddressableLightingInterface(DALI)has

emergedasastandardinEuropetoaddressgrowing

powerissues.DALIisknownasAnnexEoftheEuro-

peanelectronicballaststandardEN60929andspecifi-

callyrelatestodigitallycontrolleddimmableballasts.

DALItypeballastscanrunatlowerpowerlevelsthan

standardmagneticballasts.Withtheriseofdigitally

controlledballasts,theneedfordevicesthat‘talk’to

themhasincreasedaswell.Thisapplicationnote

describesaverysimpleinterfacebetweentheRS-232

serialport(availableonalmostallcomputers)and

DALI,wherethePIC16F628isthecoreoftheinterface.

Themethodsandcircuitsintroducedherecanbe

expandedupontodevelopmoreenhancedDALImas-

tercontrolsystems.AN811TheRS-232/DALIBridgeInterfaceFIGURE2:RS-232/DALIBRIDGEBLOCKAuthor:RossFoslerDIAGRAMMicrochipTechnologyInc.RS-232fromDALIBridgeDALIINTRODUCTIONcomputerTheDigitallyAddressableLightingInterface(DALI)hasemergedasastandardinEuropetoaddressgrowingpowerissues.DALIisknownasAnnexEoftheEur