Implemented the Serial Server

AMWD.Protocols.Modbus.Serial/ModbusSerialConnection.cs

@@ -90,7 +90,13 @@ namespace AMWD.Protocols.Modbus.Serial
 		/// <summary>
 		/// Gets or sets a wait-time between requests.
 		/// </summary>
-		public virtual TimeSpan InterRequestDelay { get; set; } = TimeSpan.Zero;
+		/// <remarks>
+		/// The specification says:
+		/// <br/>
+		/// For baud rates greater than 19.2k Bps, fixed values for the two timers should be used:
+		/// [...] a value of 1.750ms for inter-frame delay (t_3.5).
+		/// </remarks>
+		public virtual TimeSpan InterRequestDelay { get; set; } = TimeSpan.FromMilliseconds(1.75);
 
 		#region SerialPort Properties
 

AMWD.Protocols.Modbus.Serial/README.md

@@ -19,7 +19,7 @@ ushort count = 2;
 var registers = await client.ReadHoldingRegistersAsync(unitId, startAddress, count);
 float voltage = registers.GetSingle();
 
-Console.WriteLine($"The voltage between L1 and N is: {voltage:N2}V");
+Console.WriteLine($"The voltage of device #{unitId} between L1 and N is: {voltage:N2}V");
 ```