PLC与变频器间的通信实现

5200710IndustryandMineAutomationNo.5Oct.2007:1671-251X(2007)05-0095-03PLC31,1,1,2,1(1.,063009;2.,300072):PLCMODBUS,PLCQPLCG7,PLC:;;MODBUS;PLC;RS485:TN915.04:BRealizationofCommunicationbetweenPLCandFrequency2converterHUANGJin2feng1,ZHANGJin1,LIZhan2xian1,2,SUNShu2hui1(1.HebeiUniversityofTechnology,Tangshan063009,China.2.TianjinUniversity,Tianjin300072,China)Abstract:Inthispaper,theprincipleandrealizationmethodofcommunicationbetweenPLCandfrequency2converterwithModbuscommunicationprotocolwerediscussed.Thespeedcontrolmethodandthecommunicationprotocoloffrequency2converterandPLCnon2sequencecommunicationprotocolwereintroduced.WiththeexampleofcontroltoYASKAWAVarispeedG7byMITSUBISHIQseriesPLCanditscommunicationmodule,itstudiedhowtoimplementthecommunicationbetweenPLCandfrequency2converterbyserialcommunicationprotocol.Keywords:frequency2converter,communicationprotocol,MODBUS,PLC,RS485:2007-04-113:(2005038467):(1965-),,,,0:(1),(2),,,/,,(3)(4),,A/DD/A,I/OI/O,,,RS4851PLC,QPLCQJ71C24G7,PLCMODBUS1MODBUSMODBUS1(PLC)31,,1,,,(1),,:(),,,,()(2)1MODBUS1MODBUSRS485():1200/2400/4800/19200bps:8://:1MEMOBUS(RTU)31(3)MEMOBUS,,4::(032)0,,:,3::,,:,CRC-16()17(11100000000000101)16112PLCQJ71C24(C24)3:MELSEC(MC);;,,PLCPLC,C24,C24,PLC,C24PLC,C24,PLC,PLCC24,3,22,,,22PLC,,882PLC60.0Hz169200710,,342PLC01H10H01H10H00H01H00H01H00H02H02H58H04HCRC-1663H39H301H10H01H10H00H01HCRC-1610H08H00H02H401H90H02HCRC-16CDHC1H,,,,PLC,5B(),,,C24PLC,5B,C245B,PLC,PLC,CRC,,C24,PLC33PLC4PLCMODBUS,,5200710IndustryandMineAutomationNo.5Oct.2007:1671-251X(2007)05-0097-03PLC1,1,1,2(1.,730070;2.,110000):,S7-300,:;;;;PLC:TD672:B0,:2007-03-26:(1982-),,,,,,,,,