NModbus实例资料下载.pdf

1、Simple Modbus serial ASCII master read holding registers example.using（SerialPort port=new SerialPort（COM1）/configure serial portport.BaudRate=9600;/create modbus masterIModbusSerialMaster master=ModbusSerialMaster.CreateAscii（port）;ushort startAddress=1;ushort numRegisters=5;/read five registersush

2、ort registers=master.ReadHoldingRegisters（slaveID,startAddress,numRegisters）;for（int i=0;i numRegisters;i+）Console.WriteLine（Register 0=1,startAddress+i,registersi）;/output:/Register 1=0/Register 2=0/Register 3=0/Register 4=0/Register 5=0 Simple Modbus serial USB RTU master write multiple coils exam

3、ple.using（FtdUsbPort port=new FtdUsbPort（0）/configure usb portport.BaudRate=9600;port.Parity=FtdParity.None;port.StopBits=FtdStopBits.One;/write three coilsmaster.WriteMultipleCoils（slaveID,startAddress,new bool true,false,true）;DonateNModbus is developed andmaintained on a voluntary basisand provid

4、ed free of charge.Upcoming FeaturesWPF NModbus MasterMaster Console WrapperFTDI USB SlaveHomeSamplesDownloadsDiscussionIssuesNModbushttp:/web.archive.org/web/20090601225835/http:/www.第1页共6页2011/07/069:49 Simple Modbus serial USB ASCII master write multiple coils example.using（FtdUsbPort port=new Ftd

5、UsbPort（0）/configure usb portport.BaudRate=9600;Simple Modbus TCP master read inputs example.using（TcpClient client=new TcpClient（127.0.0.1,502）ModbusIpMaster master=ModbusIpMaster.CreateTcp（client）;/read five input valuesushort startAddress=100;ushort numInputs=5;bool inputs=master.ReadInputs（start

6、Address,numInputs）;i numInputs;i+）Console.WriteLine（Input 0=1,startAddress+i,inputsi?1:0）;/Input 100=0/Input 101=0/Input 102=0/Input 103=0/Input 104=0 Simple Modbus UDP master write coils example.using（UdpClient client=new UdpClient（）IPEndPoint endPoint=new IPEndPoint（new IPAddress（new byte 127,0,0,

7、1）,502）;client.Connect（endPoint）;ModbusIpMaster master=ModbusIpMaster.CreateUdp（client）;/write three coilsmaster.WriteMultipleCoils（startAddress,new bool true,false,true）;Simple Modbus serial RTU slave example.using（SerialPort slavePort=new SerialPort（COM2）/configure serial portslavePort.BaudRate=96

8、00;slavePort.DataBits=8;slavePort.Parity=Parity.None;slavePort.StopBits=StopBits.One;slavePort.Open（）;byte unitID=1;/create modbus slaveModbusSlave slave=ModbusSerialSlave.CreateRtu（unitID,slavePort）;slave.DataStore=DataStoreFactory.CreateDefaultDataStore（）;slave.Listen（）;NModbushttp:/www.第2页共6页2011

9、/07/069:49 Simple Modbus Serial ASCII slave example.using（SerialPort slavePort=new SerialPort（COM2）/configure serial portslavePort.BaudRate=9600;/create modbus slaveModbusSlave slave=ModbusSerialSlave.CreateAscii（unitID,slavePort）;Simple Modbus TCP slave example.byte slaveID=1;int port=502;IPAddress

10、 address=new IPAddress（new byte 127,0,0,1）;/create and start the TCP slaveTcpListener slaveTcpListener=new TcpListener（address,port）;slaveTcpListener.Start（）;ModbusSlave slave=ModbusTcpSlave.CreateTcp（slaveID,slaveTcpListener）;/prevent the main thread from exitingThread.Sleep（Timeout.Infinite）;Simpl

11、e Modbus UDP slave example.using（UdpClient client=new UdpClient（502）ModbusUdpSlave slave=ModbusUdpSlave.CreateUdp（client）;Modbus TCP master and slave example.byte slaveID=1;/www.第3页共6页2011/07/069:49/create and start the TCP slaveTcpListener slaveTcpListener=new TcpListener（address,port）;Thread slave

12、Thread=new Thread（slave.Listen）;slaveThread.Start（）;/create the masterTcpClient masterTcpClient=new TcpClient（address.ToString（）,port）;ModbusIpMaster master=ModbusIpMaster.CreateTcp（masterTcpClient）;/read five register valuesushort inputs=master.ReadInputRegisters（startAddress,numInputs）;i+）Console.

13、WriteLine（Register 0=1,startAddress+i,inputsi）;/clean upmasterTcpClient.Close（）;slaveTcpListener.Stop（）;/output/Register 100=0/Register 101=0/Register 102=0/Register 103=0/Register 104=0 Modbus serial ASCII master and slave example.using（SerialPort masterPort=new SerialPort（COM1）using（SerialPort sla

14、vePort=new SerialPort（COM2）/configure serial portsmasterPort.BaudRate=slavePort.BaudRate=9600;masterPort.DataBits=slavePort.DataBits=8;masterPort.Parity=slavePort.Parity=Parity.None;masterPort.StopBits=slavePort.StopBits=StopBits.One;masterPort.Open（）;/create modbus slave on seperate threadbyte slav

15、eID=1;ModbusSlave slave=ModbusSerialSlave.CreateAscii（slaveID,slavePort）;Thread slaveThread=new Thread（new ThreadStart（slave.Listen）;/create modbus masterModbusSerialMaster master=ModbusSerialMaster.CreateAscii（masterPort）;master.Transport.Retries=5;/read five register valuesushort registers=master.

16、ReadHoldingRegisters（slaveID,startAddress,numRegisters）;/output/Register 100=0/Register 101=0/Register 102=0/Register 103=0/Register 104=0 Write and Read 32 bit value example.uint largeValue=UInt16.MaxValue+5;ushort lowOrderValue=BitConverter.ToUInt16（BitConverter.GetBytes（largeValue）,0）;ushort high

17、OrderValue=BitConverter.ToUInt16（BitConverter.GetBytes（largeValue）,2）;/write large value in two 16 bit chunksmaster.WriteMultipleRegisters（slaveID,startAddress,new ushort lowOrderValue,highOrderValue）;/read large value in two 16 bit chunks and perform conversionushort registers=master.ReadHoldingReg

18、isters（slaveID,startAddress,2）;uint value=ModbusUtility.GetUInt32（registers1,registers0）;/www.第4页共6页2011/07/069:49 Logging example.NModbus uses log4net.Your application can easily be configured to capture the NModbus log statements,as well as your own.Try adding the following xml to your application

19、s configuration settings.NModbusConsoleAppender consumes only log statements of level INFO and higher while NModbusFileAppender consumes all log statements（output to NModbusLog.txt）.To configure log4net based on your applications configuration settings add the following line.log4net.Config.XmlConfig

20、urator.Configure（）;Example log4net appender output for a the modbus serial RTU master write registers example./ConsoleAppenderINFO Modbus.IO.ModbusTransport UnicastMessage-TX:1,16,0,100,0,3,6,0,1,0,2,0,3INFO Modbus.IO.ModbusTransport UnicastMessage-RX:1,16,0,100,0,3/FileAppender（NModbusLog.txt）INFO

21、Modbus.IO.ModbusTransport UnicastMessage-TX:1,16,0,100,0,3,6,0,1,0,2,0,3DEBUG Modbus.IO.ModbusRtuTransport Read-Read 4 bytes.DEBUG Modbus.IO.ModbusRtuTransport ReadResponse-Frame start 1,16,0,100.DEBUG Modbus.IO.ModbusRtuTransport Read-Read 4 bytes.DEBUG Modbus.IO.ModbusRtuTransport ReadResponse-Fra

22、me end 0,3,193,215.INFO Modbus.IO.ModbusTransport UnicastMessage-RX:1,16,0,100,0,3For more information visit the log4net project page.Add your own custom messages.So your device has custom messages?Not a problem,NModbus exposes interfaces IModbusMessage and IModbusMessageWithData just for that reaso

23、n.Simply implement custom request and response messages and call the appropriate ModbusMaster.ExecuteCustomMessage overload.Example from a test demonstrationg both ExecuteCustomMessage overloads:ushort testAddress=120;ushort testValues=new ushort 10,20,30,40,50;CustomReadHoldingRegistersRequest read

24、Request=new CustomReadHoldingRegistersRequest（3,SlaveAddress,testAddress,（ushort）testValue CustomWriteMultipleRegistersRequest writeRequest=new CustomWriteMultipleRegistersRequest（16,SlaveAddress,testAddress,new RegisterCo ushort originalValues=Master.ExecuteCustomMessage（readRequest）;Master.Execute

25、CustomMessage（writeRequest）;ushort newValues=Master.ExecuteCustomMessage（readRequest）;Assert.AreEqual（testValues,newValues）;writeRequest=new CustomWriteMultipleRegistersRequest（16,SlaveAddress,testAddress,new RegisterCollection（originalValues）;Check out these example custom message implementations:CustomReadHoldingRegistersRequest CustomReadH