MODBUS protocol official code, is a C# Written.

NModbus
.......\NModbus_1[1].4.0.3
.......\..................\bin
.......\..................\...\FTD2XX.dll
.......\..................\...\FtdAdapter.dll
.......\..................\...\log4net.dll
.......\..................\...\Modbus.dll
.......\..................\NModbus.chm
.......\..................\README.txt
.......\NModbus_1[1].4.0.3-source
.......\.........................\bin
.......\.........................\...\FTD2XX.dll
.......\.........................\...\FtdAdapter.dll
.......\.........................\...\log4net.dll
.......\.........................\...\Modbus.dll
.......\.........................\NModbus.chm
.......\.........................\README.txt
.......\.........................\source
.......\.........................\......\lib
.......\.........................\......\...\FTD2XX.dll
.......\.........................\......\...\log4net.dll
.......\.........................\......\...\nunit.framework.dll
.......\.........................\......\...\Rhino.Mocks.dll
.......\.........................\......\NModbus.build
.......\.........................\......\NModbus.shfb
.......\.........................\......\src
.......\.........................\......\...\FtdAdapter
.......\.........................\......\...\..........\FtdAdapter.csproj
.......\.........................\......\...\..........\FtdUsbPort.cs
.......\.........................\......\...\..........\Properties
.......\.........................\......\...\..........\..........\AssemblyInfo.cs
.......\.........................\......\...\Modbus
.......\.........................\......\...\......\Data
.......\.........................\......\...\......\....\DataStore.cs
.......\.........................\......\...\......\....\DataStoreFactory.cs
.......\.........................\......\...\......\....\DiscreteCollection.cs
.......\.........................\......\...\......\....\IModbusMessageDataCollection.cs
.......\.........................\......\...\......\....\ModbusDataCollection.cs
.......\.........................\......\...\......\....\RegisterCollection.cs
.......\.........................\......\...\......\Device
.......\.........................\......\...\......\......\IModbusMaster.cs
.......\.........................\......\...\......\......\IModbusSerialMaster.cs
.......\.........................\......\...\......\......\ModbusDevice.cs
.......\.........................\......\...\......\......\ModbusIpMaster.cs
.......\.........................\......\...\......\......\ModbusMaster.cs
.......\.........................\......\...\......\......\ModbusSerialMaster.cs
.......\.........................\......\...\......\......\ModbusSerialSlave.cs
.......\.........................\......\...\......\......\ModbusSlave.cs
.......\.........................\......\...\......\......\ModbusTcpSlave.cs
.......\.........................\......\...\......\......\ModbusUdpSlave.cs
.......\.........................\......\...\......\IO
.......\.........................\......\...\......\..\CommPortAdapter.cs
.......\.........................\......\...\......\..\ISerialPortAdapter.cs
.......\.........................\......\...\......\..\ISerialResource.cs
.......\.........................\......\...\......\..\ModbusAsciiTransport.cs
.......\.........................\......\...\......\..\ModbusIpTransport.cs
.......\.........................\......\...\......\..\ModbusRtuTransport.cs
.......\.........................\......\...\......\..\ModbusSerialTransport.cs
.......\.........................\......\...\......\..\ModbusTcpTransport.cs
.......\.........................\......\...\......\..\ModbusTransport.cs
.......\.........................\......\...\......\..\ModbusUdpTransport.cs
.......\.........................\......\...\......\..\TcpStreamAdapter.cs
.......\.........................\......\...\......\Message
.......\.........................\......\...\......\.......\DiagnosticsRequestResponse.cs
.......\.........................\......\...\......\.......\IModbusMessage.cs
.......\.........................\......\...\..

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