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;
}
}
}
/// <summary>
/// 写plc的值
/// </summary>
public string WritePlcDataDB(string plcName, object[] value)
{
string errText = string.Empty;
PLClock plcRead = plcClass(plcName, ref errText);
if (errText.Trim().Length > 0)
{
return(errText);
}
plcRead.WirtePlc(value);
return(errText);
}
public PLClock plcClass(string plcName, ref string errText)
{
lock (plcLock)
{
try
{
errText = string.Empty;
PLClock plcRead;
if (plcCollection.Keys.Count(r => r == plcName) > 0)
{
plcRead = plcCollection[plcName];
return(plcRead);
}
plcRead = new PLClock();
plcRead.ConnectRemoteServer();
plcRead.PLCGroupAdd();
foreach (KeyValuePair <string, List <string> > item in typeClass)
{
string xmlName = item.Key;
if (xmlName == plcName)
{
OpcRcw.Da.OPCITEMDEF[] Item = new OPCITEMDEF[item.Value.Count];
for (int i = 0; i < item.Value.Count; i++)
{
Item[i].szAccessPath = "";
Item[i].szItemID = item.Value[i].ToString();
Item[i].bActive = 1; //是否激活
Item[i].hClient = i + 1; //表示ID
Item[i].dwBlobSize = 0;
Item[i].pBlob = IntPtr.Zero;
Item[i].vtRequestedDataType = 8;
plcRead.PLCItemAdd(Item);
}
break;
}
}
plcCollection.Add(plcName, plcRead);
return(plcRead);
}
catch (Exception ex)
{
errText = ex.Message.ToString();
return(null);
}
}
}
