Implementation of the basic functionallity

AMWD.Protocols.Modbus.Common/Enums/ModbusFunctionCode.cs

@@ -0,0 +1,67 @@
+using System.ComponentModel;
+
+namespace AMWD.Protocols.Modbus.Common
+{
+	/// <summary>
+	/// List of the Modbus function codes.
+	/// </summary>
+	public enum ModbusFunctionCode : byte
+	{
+		/// <summary>
+		/// Read coils (Fn 1).
+		/// </summary>
+		[Description("Read Coils")]
+		ReadCoils = 0x01,
+
+		/// <summary>
+		/// Read discrete inputs (Fn 2).
+		/// </summary>
+		[Description("Read Discrete Inputs")]
+		ReadDiscreteInputs = 0x02,
+
+		/// <summary>
+		/// Reads holding registers (Fn 3).
+		/// </summary>
+		[Description("Read Holding Registers")]
+		ReadHoldingRegisters = 0x03,
+
+		/// <summary>
+		/// Reads input registers (Fn 4).
+		/// </summary>
+		[Description("Read Input Registers")]
+		ReadInputRegisters = 0x04,
+
+		/// <summary>
+		/// Writes a single coil (Fn 5).
+		/// </summary>
+		[Description("Write Single Coil")]
+		WriteSingleCoil = 0x05,
+
+		/// <summary>
+		/// Writes a single register (Fn 6).
+		/// </summary>
+		[Description("Write Single Register")]
+		WriteSingleRegister = 0x06,
+
+		/// <summary>
+		/// Writes multiple coils (Fn 15).
+		/// </summary>
+		[Description("Write Multiple Coils")]
+		WriteMultipleCoils = 0x0F,
+
+		/// <summary>
+		/// Writes multiple registers (Fn 16).
+		/// </summary>
+		[Description("Write Multiple Registers")]
+		WriteMultipleRegisters = 0x10,
+
+		/// <summary>
+		/// Tunnels service requests and method invocations (Fn 43).
+		/// </summary>
+		/// <remarks>
+		/// This function code needs additional information about its type of request.
+		/// </remarks>
+		[Description("MODBUS Encapsulated Interface (MEI)")]
+		EncapsulatedInterface = 0x2B
+	}
+}