public static string GetSymbolValue(SymbolInfo symbol, AdsConnection connection)
{
if (connection == null || connection.ConnectionState != ConnectionState.Connected)
{
return("No connection");
}
string data;
try
{
TimeSpan t;
DateTime dt;
switch (symbol.Type)
{
case "BOOL":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(bool)).ToString();
break;
case "BYTE":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(byte)).ToString();
break;
case "SINT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(sbyte)).ToString();
break;
case "INT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(short)).ToString();
break;
case "DINT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(int)).ToString();
break;
case "LINT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(long)).ToString();
break;
case "USINT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(byte)).ToString();
break;
case "UINT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(ushort)).ToString();
break;
case "UDINT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(uint)).ToString();
break;
case "ULINT":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(ulong)).ToString();
break;
case "REAL":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(float)).ToString();
break;
case "LREAL":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(double)).ToString();
break;
case "WORD":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(ushort)).ToString();
break;
case "DWORD":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(uint)).ToString();
break;
case "ENUM":
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(IEnumValue)).ToString();
break;
case "TIME":
t = TimeSpan.FromMilliseconds((uint)connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(uint)));
if (t.Minutes > 0)
{
data = $"T#{t.Minutes}m{t.Seconds}s{t.Milliseconds}ms";
}
else if (t.Seconds > 0)
{
data = $"T#{t.Seconds}s{t.Milliseconds}ms";
}
else
{
data = $"T#{t.Milliseconds}ms";
}
break;
case "TIME_OF_DAY":
case "TOD":
t = TimeSpan.FromMilliseconds((uint)connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(uint)));
if (t.Hours > 0)
{
data = $"TOD#{t.Hours}:{t.Minutes}:{t.Seconds}.{t.Milliseconds}";
}
else if (t.Minutes > 0)
{
data = $"TOD#{t.Minutes}:{t.Seconds}.{t.Milliseconds}";
}
else
{
data = $"TOD#{t.Seconds}.{t.Milliseconds}";
}
break;
case "DATE":
dt = new DateTime(1970, 1, 1);
dt = dt.AddSeconds((uint)connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(uint)));
data = $"D#{dt.Year}-{dt.Month}-{dt.Day}";
break;
case "DATE_AND_TIME":
case "DT":
dt = new DateTime(1970, 1, 1);
dt = dt.AddSeconds((uint)connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(uint)));
data = $"DT#{dt.Year}-{dt.Month}-{dt.Day}-{dt.Hour}:{dt.Minute}:{dt.Second}";
break;
default:
if (symbol.Type.StartsWith("STRING"))
{
int charCount = Convert.ToInt32(symbol.Type.Replace("STRING(", "").Replace(")", ""));
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(string), new[] { charCount }).ToString();
}
else
{
data = connection.ReadAny((uint)symbol.IndexGroup, (uint)symbol.IndexOffset, typeof(string), new[] { symbol.Size }).ToString();
}
break;
}
}
catch (Exception ex)
{
return(ex.Message);
}
return(data);
}