public string ReadPlcDbValue(string plcName, ref string errText)
{
lock (plcName)
{
try
{
errText = string.Empty;
PLClock plcRead = plcClass(plcName, ref errText);
if (errText.Trim().Length > 0)
{
return("01aaa");
}
List <object> read = plcRead.ReadPlc();
if (read == null)
{
return("01bbb");
}
if (read.Count == 0)
{
return("01ccc");
}
return(read[0].ToString());
}
catch (Exception ex)
{
errText = ex.Message.ToString();
return("01ddd");// throw ex;
}
}
}
