DMX512灯光控制协议的传输特性及应用要点分析

©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(1962-),,,,(,255049):DMX(DigitalMultipleX)512,,DMXDMX512,DMX512,DMX512,DMX512:DMX512;;;AnalysisofTransmissionCharacteristicsandApplicationofDMX512ControlProtocolHanZhenlei,QiLisen(SchoolofComputerScienceandTechnology,ShandongUniversityofTechnology,ZiboShandong255049)Abstract:IntroducedthedatapacketofDMX512controlprotocolindigitallightingsystemfirst,andthen,bydintofthealampsDMXchanneltable,analyzedthecontrolprocessandprinciple,thefinal,summarizeseveralessentialmattersofapplication,suchas,startcode,UnitsofLoadandDMX512signalterminatorandsoon.Keywords:DMX512controlprotocol;programframe;addresscode;unitsofload0DMX512,,DMX512,,,,,DMX5121DMX512DMXDigitalMultipleX,DMX512(USITT)1990,USITTDMX512(1990),DMX,,DMX18211,,11DMX512()()4420093331©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(0255),,256,00000000(0),11111111(255)DMX512()4s,44s,250kbpsDMX512(Packet)MTBPBreakMABSC512MTBP(MarkTimeBetweenPackets),,Break,,(22),(),,MAB(MarkAfterBreak),,SC(StartCode)(10),,11,,9,00(ChannelNo0),(Non-ExistentChannel)1DMX512Break88881000000sMAB4812s44s4s8s4sMTBP0NS1000000s1DMX512,NSNotSpecified,,,MTBP01,51223ms,51244,44Hz,512,2DMX512DMX512,,,,DMX,DMX512DMX,,,,DMX22DMXDMX(DMXChannel)DMXCh1:(Flash)078231232255Ch2:(Dimmer)0,255Ch3:(X-Pan)00450255Ch4:(Y-Tilt)00270255Ch5:(ColorWheel)0151612717128255Ch6:(FixedGobo)0151612717128255Ch7:(GoboRotation)078119P120231P232239P240247P248255180P360P720Ch8:(Reset)052555420093331©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(512P8=64)DMX20,DMX25(512P20=25.6,)3DMX512DMX512,DMX3.1DMXDMX512DMX5,1,2,34,5(2,4,3,5),4,5,53,3,348V,,,3,,DMXDMX,DMX512,DMX,,DMXDMX(2),,,;,,2:,DMX,DMX5122DMX3.2DMX512,DMX512,DMX512(),DMX512,DMX512DMX512,,,,DMX,001,001DMX,,1620,001,017,037512,,DMX,,,,,(53)6420093331©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:[1].[M].:,2006[2].[M].:,2005[3].[M].:,1999[4],.[M].:,1998(46)3.3(UnitsofLoad)DMX512,DMX512,32DMX51232,512,DMX,DMXDMX,,32DMXDMX5123.4DMX(DMXTerminator)DMXDMXDMX,1201W,DMXDMX,,,,DMX,,,DMX,4,DMX512,DMX512,,,,,,DMX512-A,,DMX512,1212,:[1]http:PP[2]http:PPen.wikipedia.orgPwikiPDMX512-A[3].[M].:,20053520093331