public void TestGetErrorString01()
{
//testing --
OpcServer opcServer = new OpcServer();
Accessor opcServerAccessor = ReflectionAccessor.Wrap(opcServer);
opcServerAccessor.SetField("ifServer", new OPCServerComClass());
//Test Procedure Call
opcServer.GetErrorString(-1073479673, 0);
//Post Condition Check
}
/// <summary>
/// Connect to opc server
/// </summary>
/// <param name="serverName"></param>
/// <param name="requestedUpdateRate">In case of use of LinkMaster and Kepserver simulation, this value should match the LinkMaster value</param>
/// <returns></returns>
public bool Connect(string serverName, int requestedUpdateRate = 250)
{
srv = new OpcServer();
int rtc = srv.Connect(serverName);
if (HRESULTS.Failed(rtc))
{
srv.GetErrorString(rtc, 0);//MBR added 0 return Srv.GetErrorString( rtc);
return(false);
}
float deadBand = 0.0F;
//Get data start
try
{
OPCGetData.OPCReadGroup = srv.AddGroup("Group1GetData", true, requestedUpdateRate, ref deadBand, 0, 0);
}
catch (Exception)
{
srv.Disconnect();
return(false);
//return ex.Message;
}
//Get data end
//Set data start
try
{
OPCSetData.OPCWriteGroup = srv.AddGroup("Group1SetData", true, requestedUpdateRate, ref deadBand, 0, 0);
}
catch (Exception)
{
srv.Disconnect();
return(false);//return ex.Message;
}
return(true); //ok
}
public string ServerAccessOpc(string serverName)
{
OpcServer Srv = new OpcServer();
int rtc = Srv.Connect(serverName);
if (HRESULTS.Failed(rtc))
{
try
{
return(Srv.GetErrorString(rtc, 0));
}
catch {
return(rtc.ToString());
}
}
OpcGroup oGrp;
float deadBand = 0.0F;
try
{
oGrp = Srv.AddGroup("Grp1", true, 500, ref deadBand, 0, 0);
}
catch (Exception ex)
{
Srv.Disconnect();
return(ex.Message);
}
OPCItemDef[] items = new OPCItemDef[1];
items[0] = new OPCItemDef("Saw-toothed Waves.Int2",
true, 0, VarEnum.VT_I2);
OPCItemResult[] addRslt = new OPCItemResult[1];
rtc = oGrp.AddItems(items, out addRslt);
if (HRESULTS.Failed(rtc))
{
Srv.Disconnect();
return("Error at AddItem");
}
int[] iHnd = new Int32[1];
iHnd[0] = addRslt[0].HandleServer;
OPCItemState[] rslt;
rtc = oGrp.Read(OPCDATASOURCE.OPC_DS_CACHE,
iHnd, out rslt);
string retVal;
if (HRESULTS.Failed(rtc))
{
retVal = "Read error";
}
else
if (HRESULTS.Failed(rslt[0].Error))
{
retVal = "Item Read error";
}
else
{
retVal = "data=" + rslt[0].DataValue.ToString();
}
oGrp.Remove(true);
Srv.Disconnect();
return(retVal);
}
