dOPCGUI.FinddOPCItem

FinddOPCItem scans the passed OPCServer for the also passed Groupname and Itemname and returns the result as a TdOPCItem.

Delphi

function FinddOPCItem(OpcServer: TdOPCDAClient; Groupname: string; Itemname: string): TdOpcItem;

C++

TdOpcItem FinddOPCItem(TdOPCDAClient OpcServer, AnsiString Groupname, AnsiString Itemname);

Parameters

Parameters	Description
OpcServer: TdOPCDAClient	The TdOPCDAClient object you want to search
Groupname: string	Name of the OPC Group you want to search.
Itemname: string	Name of the OPC Item tag you want to find

Returns

Returns the found TdOPCItem object, if no match is found the result will be nil.

Description

Search in a given OPC Group for the OPC Item and returns an TdOPCItem object. If not found the result is NIL

Example

Copy Code

var
  opcItem : tdOPCItem;
begin
  Item :=  FinddOPCItem(OPCServer,'MyOPCGroup','Random.String');
  if Item <> nil then   // if Item exists
    Item.WriteSync('New Value')
  else
   ShowMessage('OPC Item not found');
end;

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