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1、序列00ＤＡＴＡ：+$(R(1),16)+DATA:+&~(W(1),8)+PLC程序问题1：通信序列明明是00，而PLC程序中控制字2怎么是#1呢？问题2：PLC程序中MOV&5D250这是用来做什么呀？问题3：上面的发送和接收数中为什么只有帧头，data,帧毛，而没有数据长度，和接收地址呢？问题4：+$(R(1),16)+，+&~(W(1),8)+怎么和PLC程序对应上来？问题5：这个S00030200E怎么跟D260联系起来？R0001000001990

2、200E怎么跟D250联系起来？上位机=>PLC1.Bitcommandword2.Setpointwordtopump0~1000=(0%~100.0%)Examplesetpointstring;[xx]isASCIICodeValueS00030200ES[53]=startcommandforsetpointsBinBcdBitcommandword0003[30303033]0bit:1=SwitchpumpON1bit:1=Swi

3、tchcycleON2bit:0=noreset~13bit:system1secclocktothecommunicationconfirmPressurevaluecommandword0200[30323030]0200=20.0%E[45]=endcommandPLC=>上位机a.Currentpumpstatus(Bit)wordb.Setpressureword0~1000=(0%~100.0%)c.Currentpressureword0~1000=(0%~100.0%)d.CurrentHP

4、statusword0~65535Examplereadbackstring;[xx]isASCIICodeValueR0001000001990200EBinBcdBcdBcdR[52]=startcommandforreadbacksBitstatusword0001[30303031]↑0bit:1=PumpisON1bit:0=CycleisOFF2bit:0=no

5、reset3bit:1=HPrinsepressureOKtoBeltdriverun0=HPrinsepressureNG~R2000↑13bit:systemclock2secondtocommunicationcheckSetpressurevalue0199[30313939]0199=Currentpressure19.9%Ifnotsamewithset,errorCurrentpressurevalue0200[30323030]0200=Currentpressure20.0%R000100

6、0001990200EErrorcode00=NoerrorinHPsystemE[45]=endcommandProposedCOMsettings;Baudrate9600ParitynonStart1Databits8Stopbits1Communicationperiodis0.3second