/// <summary>
/// Given a S7 variable type (Bool, Word, DWord, etc.), it converts the bytes in the appropriate C# format.
/// </summary>
/// <param name="varType"></param>
/// <param name="bytes"></param>
/// <param name="varCount"></param>
/// <param name="bitAdr"></param>
/// <returns></returns>
private object ParseBytes(VarType varType, byte[] bytes, int varCount, byte bitAdr = 0)
{
if (bytes == null || bytes.Length == 0)
{
return(null);
}
switch (varType)
{
case VarType.Byte:
if (varCount == 1)
{
return(bytes[0]);
}
else
{
return(bytes);
}
case VarType.Word:
if (varCount == 1)
{
return(Word.FromByteArray(bytes));
}
else
{
return(Word.ToArray(bytes));
}
case VarType.Int:
if (varCount == 1)
{
return(Int.FromByteArray(bytes));
}
else
{
return(Int.ToArray(bytes));
}
case VarType.DWord:
if (varCount == 1)
{
return(DWord.FromByteArray(bytes));
}
else
{
return(DWord.ToArray(bytes));
}
case VarType.DInt:
if (varCount == 1)
{
return(DInt.FromByteArray(bytes));
}
else
{
return(DInt.ToArray(bytes));
}
case VarType.Real:
if (varCount == 1)
{
return(Types.Single.FromByteArray(bytes));
}
else
{
return(Types.Single.ToArray(bytes));
}
case VarType.String:
return(Types.String.FromByteArray(bytes));
case VarType.StringEx:
return(StringEx.FromByteArray(bytes));
case VarType.Timer:
if (varCount == 1)
{
return(Timer.FromByteArray(bytes));
}
else
{
return(Timer.ToArray(bytes));
}
case VarType.Counter:
if (varCount == 1)
{
return(Counter.FromByteArray(bytes));
}
else
{
return(Counter.ToArray(bytes));
}
case VarType.Bit:
if (varCount == 1)
{
if (bitAdr > 7)
{
return(null);
}
else
{
return(Bit.FromByte(bytes[0], bitAdr));
}
}
else
{
return(Bit.ToBitArray(bytes));
}
default:
return(null);
}
}