public static int GetTagOffset(string tagName, int baseNum)
{
if (string.IsNullOrEmpty(tagName))
{
return(0);
}
int off = 0;
switch (tagName[0])
{
case 'X':
case 'x':
case 'Y':
case 'y':
if (baseNum == 8)
{
off = (int)FxConvert.OctToValue(tagName.Substring(1)); // 8进制
}
else
{
off = (int)FxConvert.HexToDec(tagName.Substring(1)); // 16进制
}
break;
default:
off = (int)FxConvert.DecToValue(tagName.Substring(1)); // 十进制
break;
}
return(off);
}
/// <summary>
/// 解析PLC响应数据（到集合中）
/// </summary>
/// <typeparam name="T">支持数据类型 UInt16DataType,UInt32DataType</typeparam>
/// <param name="pureData"></param>
/// <param name="startIndex"></param>
/// <param name="value">解析后的返回值</param>
public static void ParseSmart <T>(byte[] data, int startIndex, out List <int> value) where T : ICellDataType, new()
{
T t = new T();
value = new List <int>();
if (data.Length < 7)
{
return; // 长度至少大于7
}
if (data[startIndex] != FxControlCode._STX)
{
return;
}
// 每次处理一个 4B 或 8B,对应着 ushort，uint
if (t.DataItemSize == 1)
{
for (int i = startIndex + 1; i < (data.Length - startIndex - t.DataItemHexStringSize); i += t.DataItemHexStringSize)
{
int v = FxConvert.HexToDec(data, i, t.DataItemHexStringSize);
value.Add(v);
}
}
else
{
for (int i = startIndex + 1; i < (data.Length - startIndex - t.DataItemHexStringSize); i += t.DataItemHexStringSize)
{
int v = FxConvert.HexToDecBig(data, i, t.DataItemHexStringSize);
value.Add(v);
}
}
}
/// <summary>
/// 将给定数据序列转换为命令串格式
/// 这是针对 ushort 的特殊命令版本，也可使用 ConvertToString<UShortDataType>(...) 函数达到同样目的
/// </summary>
/// <param name="pureData"></param>
/// <returns></returns>
public static string ConvertToString(List <ushort> data)
{
StringBuilder sb = new StringBuilder(data.Count * sizeof(ushort) * 2);
for (int i = 0; i < data.Count; i++)
{
sb.Append(FxConvert.DecToHex(data[i], sizeof(ushort) * 2));
}
return(sb.ToString());
}
/// <summary>
/// 将给定数据序列转换为命令串格式
/// 目前支持 16位、32位 两种格式,例如 UInt16DataType,UInt32DataType
/// </summary>
/// <param name="pureData">数据序列</param>
public static string ConvertToString <T>(List <uint> data) where T : ICellDataType, new()
{
T t = new T();
StringBuilder sb = new StringBuilder(data.Count * t.DataItemHexStringSize);
for (int i = 0; i < data.Count; i++)
{
sb.Append(FxConvert.DecToHex(data[i], t.DataItemHexStringSize));
}
return(sb.ToString());
}
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());
}
