/// <summary>
/// 构建PLC FX命令
/// 支持各种“读数据”或“查询”类命令，默认数据类型UInt16DataType
/// </summary>
/// <param name="response">命令字</param>
/// <param name="addr">起始地址</param>
public static string Make(FxCommandConst cmd, FxAddress addr)
{
int length = 0;
if (cmd == FxCommandConst.FxCmdForceOff | cmd == FxCommandConst.FxCmdForceOn)
{
length = 0;
}
else
{
switch (addr.AddressSpaceType)
{
case FxAddressLayoutType.AddressLayoutBin:
length = 0;
break;
case FxAddressLayoutType.AddressLayoutByte:
length = 1;
break;
case FxAddressLayoutType.AddressLayoutInt16:
length = 2;
break;
case FxAddressLayoutType.AddressLayoutInt32:
length = 4;
break;
}
}
return(Make(cmd, addr, length));
}
public static string Make(FxCommandConst cmd, FxAddress addr, int length, string data)
{
Debug.Assert(length == data.Length, "length(长度)必须与给定的数据实际一致");
StringBuilder sb = new StringBuilder(64 + data.Length);
sb.Append((char)FxControlCode._STX);
sb.Append((char)cmd);
sb.Append(addr.ToAddressHexString());
sb.Append(FxConvert.DecToHex((uint)(length / 2), 2));
sb.Append(data);
sb.Append((char)FxControlCode._ETX);
sb.Append(FxConvert.DecToHex(GetCheckSum(sb.ToString(), 1), 2));
return(sb.ToString());
}
/// <summary>
/// 构建PLC FX命令
/// 支持各种“读数据”或“查询”类命令，支持多种数据类型，例如 UInt16DataType,UIntDataType
/// </summary>
/// <param name="response">命令字</param>
/// <param name="addr">起始地址</param>
/// <param name="length">数据长度，以字节为单位。例如：如果是16bits则为2、32bits则为4</param>
/// <returns>返回构造完成的命令串</returns>
public static string Make(FxCommandConst cmd, FxAddress addr, int length)
{
StringBuilder sb = new StringBuilder(64);
sb.Append((char)FxControlCode._STX);
sb.Append((char)cmd);
sb.Append(addr.ToAddressHexString());
if (length > 0)
{
sb.Append(FxConvert.DecToHex((uint)length, 2));
}
sb.Append((char)FxControlCode._ETX);
sb.Append(FxConvert.DecToHex(GetCheckSum(sb.ToString(), 1), 2));
return(sb.ToString());
}
public static string Make(FxCommandConst cmd, FxAddress addr, int length, byte[] data)
{
Debug.Assert(length == data.Length, "length(长度)必须与给定的数据实际一致");
return(Make(cmd, addr, length, ASCIIEncoding.ASCII.GetString(data)));
}
/// <summary>
/// 构建PLC FX命令
/// 这是针对 ushort 的特殊命令，也可使用 Make<UShortDataType>(...) 函数达到同样目的
/// </summary>
/// <param name="response">命令字</param>
/// <param name="addr">起始地址</param>
/// <param name="pureData">数据部分</param>
/// <returns>返回构造完成的命令串</returns>
public static string Make(FxCommandConst cmd, FxAddress addr, List <ushort> data)
{
return(Make(cmd, addr, data.Count * sizeof(ushort) * 2, ConvertToString(data)));
}
/// <summary>
/// 构建PLC FX命令
/// 支持各种“写数据”命令，支持多种数据类型，例如 UInt16DataType,UInt32DataType
/// </summary>
/// <param name="response">命令字</param>
/// <param name="addr">起始地址</param>
/// <param name="pureData">数据部分</param>
/// <returns>返回构造完成的命令串</returns>
public static string Make <T>(FxCommandConst cmd, FxAddress addr, List <uint> data) where T : ICellDataType, new()
{
T t = new T();
return(Make(cmd, addr, data.Count * t.DataItemHexStringSize, ConvertToString <T>(data)));
}
