1784-PCC1784-PCC1784-PCC自由口通讯是通过用户程序可以控制s7-200cpu通讯口的操作模式。利用自由口模式，可以实现用户定义的通讯协议连接多种智能设备。通过使用接收中断、发送中断、发送指令和接收指令，用户程序控制通讯口操作。在自由口通讯模式下，通讯协议完全由用户程序控制。通过***b30（口0）允许自由口模式，而且只有在cpu处于run模式时才能允许。当cpu出于stop模式时，自由口通讯停止，通讯口转换成正常的ppi协议操作。近年来，随着我国铁路运输环境的改善，列车速度越来越高，势必对铁道车辆提出较高的要求，其表现在对列车的舒适性和运行可靠性、安全性的要求提高，因此车辆上设备的自动化程度越来越高。自动化程度的提高，带动了网络技术在列车控制和监控上的应用。◆企业名称：厦门泰尼电气有限公司◆主营业务：DCS,PLC◆经营模式：贸易◆贸易地区：***◆联系人：小黄《女士》◆电话：0592-6809319◆手机：18950191386◆***:2917675397◆传真：0592-6890859（备注“01006”收）◆E-mail：2917675397@***.comSquareDFJA34100100Amp480Y/277VPowerPactBreakerIAD480AllenBradleyABBulletin1336BrakingChopper1336-WB035SerA750VDC1336WB035ModiconTSX140DDO353-0124VDCOutput140DDO35301AllenBradley509-DOBSize3MotorStarter120VCoilAB509DOBSz3CTC2207A16AnalogInModuleControlTechnologyCorporation2207AGeneralElectric7700Plus60AmpFusedDualFeederMCCBMCC***et800012"GECutler-HammerSize1Breaker/StarterCombinationBoxSquareDCircuitBreakerLALLAL36300300Amp300A300ARelianceElectric57C331A16SlotRackAutoMaxPLCChassis803456-8RA57C331ARelianceElectric57C33116SlotRackAutoMaxPLCChassis803456-8RA57516-1CNirecoEH322WebGuideAmprifierHortonEH-322GE30kVA480/208Y/120Transformer3PH9T23Y3002GeneralElectric30kVAV3PHAllenBradleyABSize1Fused505-BOD-2330AReversingMCC***etmccbCutlerHammerCHF10UnitrolSzSize1MCCB15AmpASquareDModModel5SzSize1BreakerMCC***et7Amp8536SC03FAP3600712MFujiElectricBreakerBU-JSA3250250Amp250Amp250AACutlerHammerUnitrolSize1ReverseMCC***et3AmccbITEGould56005640FusedSz1A22C-TMCC***et30AModiconCyberline1000AServoDriveDR-1060-105CL1060cems2000SIXNET61-COUNT-16PSC261COUNT16PLCBoardcems2000SIXNET61-COUNT-16PSC61COUNT16PLCBoardFurnas43FF32AAAE350ASize2ReversingMotorStarterDanfossVLT-2800Drive2HPACVSDrive174G1045480VAC50/60HzTypeITEGouldRowanImperial56005640FusedSize114DSt32A*MCC***et30AITEGould56005640FusedSz18536SCO3MCC***et30AStiMiniSafe42687-0480MS4300MS4348BR48inLightCurtainTran***itter426870480Cutler-HammerUnitrolF10Dual70/100AmpFeederMCCBEIElectronicsMagn***alveAmperageControllerModelACSiemensTiastar25ADual/DoubleFusedFeeder***etYaskawaCDBR-22HTBrakingUnitCDBR22HTKeyenceKX-40THighSpeedInputKX-40TKX40TKX-40TITCTS-150ThermoScannerInternationalTransformerCorpAllenBradley22A-D4P0N1042HPPowerFlex4VSACDrive480VAB2HP1.5kW4ACutler-HammerSize1BreakerCombinationStarterBoxGE8000SeriesSize2BreakerStarterMCC***etMCCB50AmpGEFanucIC600-BF030LAdvIOReceiverIC600BF030LBF030GE7700Series6"BreakerFeederMCC***et3-Wire50ASquareDModel5SzSize1BreakerMCC***et15AFAP3601513MDaytronic4077SeriesDCStrainGaugeTransducerJohnsonControlsAS-UNT121-1MetaSysUnitaryControlAssemblyASUNT1211RY10344SquareDS34036NeutralCurrentTransformer400-1600AFoxboroI/APM400YL120VACInput/OutputPM400YL)