procedure OPCAddGroup(var ServerHandle: integer; Name: string; Id: integer; Active: boolean; DeadBand: single; TimeBias: integer; Localeid: integer; var UpDateRate: integer; UseCallback: boolean; Holdtime: integer; WaitTime: integer);

__fastcall OPCAddGroup(int ServerHandle, AnsiString Name, int Id, boolean Active, single DeadBand, int TimeBias, int Localeid, int UpDateRate, boolean UseCallback, int Holdtime, int WaitTime);