public bool OPC_WritePoint(string ItemName, object value)
{
try
{
using (OPCXML_DataAccess srv = new OPCXML_DataAccess())
{
WriteRequestItemList ItemLists = new WriteRequestItemList();
ItemLists.Items = new ItemValue[1];
ItemLists.Items[0] = new ItemValue();
ItemLists.Items[0].ItemPath = "";
ItemLists.Items[0].ItemName = ItemName;
ItemLists.Items[0].Value = value;
ItemLists.Items[0].TimestampSpecified = false;
RequestOptions opt = new RequestOptions();
ReplyItemList ItemValues = new ReplyItemList();
OPCError[] Errors;
opt.ReturnItemTime = true;
ReplyBase replay = srv.Write(opt, ItemLists, true, out ItemValues, out Errors);
if (replay.ServerState == serverState.failed || replay.ServerState == serverState.commFault)
{
return(false);
}
else
{
return(true);
}
}
}
catch (Exception)
{
return(false);
}
}
public bool OPC_WriteSerial(List <string> ItemNames, List <object> values)
{
try
{
using (OPCXML_DataAccess srv = new OPCXML_DataAccess())
{
int count = ItemNames.Count;
WriteRequestItemList ItemLists = new WriteRequestItemList();
ItemLists.Items = new ItemValue[count];
for (int i = 0; i < count; i++)
{
ItemLists.Items[i] = new ItemValue();
ItemLists.Items[i].ItemPath = "";
ItemLists.Items[i].ItemName = ItemNames[i];
ItemLists.Items[i].Value = values[i];
ItemLists.Items[i].TimestampSpecified = false;
}
RequestOptions opt = new RequestOptions();
ReplyItemList ItemValues = new ReplyItemList();
OPCError[] Errors;
opt.ReturnItemTime = true;
ReplyBase replay = srv.Write(opt, ItemLists, true, out ItemValues, out Errors);
if (replay.ServerState == serverState.failed || replay.ServerState == serverState.commFault)
{
return(false);
}
else
{
return(true);
}
}
}
catch (Exception)
{
return(false);
}
}
/*---------------------------------------------Writing Function Decleration ----------------------------------------------------------------*/
public void OPCWrite(List <string> TagNames, List <object> TagsValues)
{
/*---------------------------------------------Request Instance Decleration ----------------------------------------------------------------*/
WriteRequestItemList WriteItemList = new WriteRequestItemList();
List <string> TagName = new List <string>(TagNames);
List <object> TagValue = new List <object>(TagsValues);
RequestOptions.ClientRequestHandle = "";
RequestOptions.LocaleID = "EN-US";
RequestOptions.RequestDeadlineSpecified = false;
RequestOptions.ReturnDiagnosticInfo = false;
RequestOptions.ReturnErrorText = false;
RequestOptions.ReturnItemName = false;
RequestOptions.ReturnItemPath = false;
RequestOptions.ReturnItemTime = false;
int TagNos = TagName.Count();
WriteItemList.Items = new ItemValue[TagNos];
//Console.WriteLine(WriteItemList.Items.Length.ToString()); // Test for the No of Items
for (int Looper = 0; Looper < TagNos; Looper++)
{
WriteItemList.Items[Looper] = new ItemValue();
WriteItemList.ItemPath = "";
WriteItemList.Items[Looper].ItemName = TagName[Looper];
WriteItemList.Items[Looper].Value = TagValue[Looper];
Console.WriteLine(WriteItemList.Items[Looper].ItemName.ToString() + "Value Sent" + WriteItemList.Items[Looper].Value.ToString()); // Test Output
}
ReturnValueOnReply = false;
/*---------------------------------------------Writing Invoked ----------------------------------------------------------------*/
myClient.Write(RequestOptions, WriteItemList, ReturnValueOnReply, out ReplyList, out ErrorList);
TagNames = null;
TagValue = null;
}
