NModbus实例资料下载.pdf

NModbus实例资料下载.pdf

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SimpleModbusserialASCIImasterreadholdingregistersexample.using（SerialPortport=newSerialPort（COM1）/configureserialportport.BaudRate=9600;

/createmodbusmasterIModbusSerialMastermaster=ModbusSerialMaster.CreateAscii（port）;

ushortstartAddress=1;

ushortnumRegisters=5;

/readfiveregistersushortregisters=master.ReadHoldingRegisters（slaveID,startAddress,numRegisters）;

for（inti=0;

inumRegisters;

i+）Console.WriteLine（Register0=1,startAddress+i,registersi）;

/output:

/Register1=0/Register2=0/Register3=0/Register4=0/Register5=0SimpleModbusserialUSBRTUmasterwritemultiplecoilsexample.using（FtdUsbPortport=newFtdUsbPort（0）/configureusbportport.BaudRate=9600;

port.Parity=FtdParity.None;

port.StopBits=FtdStopBits.One;

/writethreecoilsmaster.WriteMultipleCoils（slaveID,startAddress,newbooltrue,false,true）;

DonateNModbusisdevelopedandmaintainedonavoluntarybasisandprovidedfreeofcharge.UpcomingFeaturesWPFNModbusMasterMasterConsoleWrapperFTDIUSBSlaveHomeSamplesDownloadsDiscussionIssuesNModbushttp:

/web.archive.org/web/20090601225835/http:

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49SimpleModbusserialUSBASCIImasterwritemultiplecoilsexample.using（FtdUsbPortport=newFtdUsbPort（0）/configureusbportport.BaudRate=9600;

SimpleModbusTCPmasterreadinputsexample.using（TcpClientclient=newTcpClient（127.0.0.1,502）ModbusIpMastermaster=ModbusIpMaster.CreateTcp（client）;

/readfiveinputvaluesushortstartAddress=100;

ushortnumInputs=5;

boolinputs=master.ReadInputs（startAddress,numInputs）;

inumInputs;

i+）Console.WriteLine（Input0=1,startAddress+i,inputsi?

1:

0）;

/Input100=0/Input101=0/Input102=0/Input103=0/Input104=0SimpleModbusUDPmasterwritecoilsexample.using（UdpClientclient=newUdpClient（）IPEndPointendPoint=newIPEndPoint（newIPAddress（newbyte127,0,0,1）,502）;

client.Connect（endPoint）;

ModbusIpMastermaster=ModbusIpMaster.CreateUdp（client）;

/writethreecoilsmaster.WriteMultipleCoils（startAddress,newbooltrue,false,true）;

SimpleModbusserialRTUslaveexample.using（SerialPortslavePort=newSerialPort（COM2）/configureserialportslavePort.BaudRate=9600;

slavePort.DataBits=8;

slavePort.Parity=Parity.None;

slavePort.StopBits=StopBits.One;

slavePort.Open（）;

byteunitID=1;

/createmodbusslaveModbusSlaveslave=ModbusSerialSlave.CreateRtu（unitID,slavePort）;

slave.DataStore=DataStoreFactory.CreateDefaultDataStore（）;

slave.Listen（）;

NModbushttp:

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49SimpleModbusSerialASCIIslaveexample.using（SerialPortslavePort=newSerialPort（COM2）/configureserialportslavePort.BaudRate=9600;

/createmodbusslaveModbusSlaveslave=ModbusSerialSlave.CreateAscii（unitID,slavePort）;

SimpleModbusTCPslaveexample.byteslaveID=1;

intport=502;

IPAddressaddress=newIPAddress（newbyte127,0,0,1）;

/createandstarttheTCPslaveTcpListenerslaveTcpListener=newTcpListener（address,port）;

slaveTcpListener.Start（）;

ModbusSlaveslave=ModbusTcpSlave.CreateTcp（slaveID,slaveTcpListener）;

/preventthemainthreadfromexitingThread.Sleep（Timeout.Infinite）;

SimpleModbusUDPslaveexample.using（UdpClientclient=newUdpClient（502）ModbusUdpSlaveslave=ModbusUdpSlave.CreateUdp（client）;

ModbusTCPmasterandslaveexample.byteslaveID=1;

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49/createandstarttheTCPslaveTcpListenerslaveTcpListener=newTcpListener（address,port）;

ThreadslaveThread=newThread（slave.Listen）;

slaveThread.Start（）;

/createthemasterTcpClientmasterTcpClient=newTcpClient（address.ToString（）,port）;

ModbusIpMastermaster=ModbusIpMaster.CreateTcp（masterTcpClient）;

/readfiveregistervaluesushortinputs=master.ReadInputRegisters（startAddress,numInputs）;

i+）Console.WriteLine（Register0=1,startAddress+i,inputsi）;

/cleanupmasterTcpClient.Close（）;

slaveTcpListener.Stop（）;

/output/Register100=0/Register101=0/Register102=0/Register103=0/Register104=0ModbusserialASCIImasterandslaveexample.using（SerialPortmasterPort=newSerialPort（COM1）using（SerialPortslavePort=newSerialPort（COM2）/configureserialportsmasterPort.BaudRate=slavePort.BaudRate=9600;

masterPort.DataBits=slavePort.DataBits=8;

masterPort.Parity=slavePort.Parity=Parity.None;

masterPort.StopBits=slavePort.StopBits=StopBits.One;

masterPort.Open（）;

/createmodbusslaveonseperatethreadbyteslaveID=1;

ModbusSlaveslave=ModbusSerialSlave.CreateAscii（slaveID,slavePort）;

ThreadslaveThread=newThread（newThreadStart（slave.Listen）;

/createmodbusmasterModbusSerialMastermaster=ModbusSerialMaster.CreateAscii（masterPort）;

master.Transport.Retries=5;

/readfiveregistervaluesushortregisters=master.ReadHoldingRegisters（slaveID,startAddress,numRegisters）;

/output/Register100=0/Register101=0/Register102=0/Register103=0/Register104=0WriteandRead32bitvalueexample.uintlargeValue=UInt16.MaxValue+5;

ushortlowOrderValue=BitConverter.ToUInt16（BitConverter.GetBytes（largeValue）,0）;

ushorthighOrderValue=BitConverter.ToUInt16（BitConverter.GetBytes（largeValue）,2）;

/writelargevalueintwo16bitchunksmaster.WriteMultipleRegisters（slaveID,startAddress,newushortlowOrderValue,highOrderValue）;

/readlargevalueintwo16bitchunksandperformconversionushortregisters=master.ReadHoldingRegisters（slaveID,startAddress,2）;

uintvalue=ModbusUtility.GetUInt32（registers1,registers0）;

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49Loggingexample.NModbususeslog4net.YourapplicationcaneasilybeconfiguredtocapturetheNModbuslogstatements,aswellasyourown.Tryaddingthefollowingxmltoyourapplicationsconfigurationsettings.NModbusConsoleAppenderconsumesonlylogstatementsoflevelINFOandhigherwhileNModbusFileAppenderconsumesalllogstatements（outputtoNModbusLog.txt）.Toconfigurelog4netbasedonyourapplicationsconfigurationsettingsaddthefollowingline.log4net.Config.XmlConfigurator.Configure（）;

Examplelog4netappenderoutputforathemodbusserialRTUmasterwriteregistersexample./ConsoleAppenderINFOModbus.IO.ModbusTransportUnicastMessage-TX:

1,16,0,100,0,3,6,0,1,0,2,0,3INFOModbus.IO.ModbusTransportUnicastMessage-RX:

1,16,0,100,0,3/FileAppender（NModbusLog.txt）INFOModbus.IO.ModbusTransportUnicastMessage-TX:

1,16,0,100,0,3,6,0,1,0,2,0,3DEBUGModbus.IO.ModbusRtuTransportRead-Read4bytes.DEBUGModbus.IO.ModbusRtuTransportReadResponse-Framestart1,16,0,100.DEBUGModbus.IO.ModbusRtuTransportRead-Read4bytes.DEBUGModbus.IO.ModbusRtuTransportReadResponse-Frameend0,3,193,215.INFOModbus.IO.ModbusTransportUnicastMessage-RX:

1,16,0,100,0,3Formoreinformationvisitthelog4netprojectpage.Addyourowncustommessages.Soyourdevicehascustommessages?

Notaproblem,NModbusexposesinterfacesIModbusMessageandIModbusMessageWithDatajustforthatreason.SimplyimplementcustomrequestandresponsemessagesandcalltheappropriateModbusMaster.ExecuteCustomMessageoverload.ExamplefromatestdemonstrationgbothExecuteCustomMessageoverloads:

ushorttestAddress=120;

ushorttestValues=newushort10,20,30,40,50;

CustomReadHoldingRegistersRequestreadRequest=newCustomReadHoldingRegistersRequest（3,SlaveAddress,testAddress,（ushort）testValueCustomWriteMultipleRegistersRequestwriteRequest=newCustomWriteMultipleRegistersRequest（16,SlaveAddress,testAddress,newRegisterCoushortoriginalValues=Master.ExecuteCustomMessage（readRequest）;

Master.ExecuteCustomMessage（writeRequest）;

ushortnewValues=Master.ExecuteCustomMessage（readRequest）;

Assert.AreEqual（testValues,newValues）;

writeRequest=newCustomWriteMultipleRegistersRequest（16,SlaveAddress,testAddress,newRegisterCollection（originalValues）;

Checkouttheseexamplecustommessageimplementations:

CustomReadHoldingRegistersRequestCustomReadH