When I add into the server address space tags by idx= MyOPCProvider.AddressSpace.AddChild ();
I get the duplicate numbers idx. I.e unique. So I can’t find the ID of the desired tag using the
function MyOPCProvider.AddressSpace.FindChild(idx,’Pressure’);
here is an example.
var
STATIONidx, RootIndex,i,idx:Integer;
softidx,hardidx,setupidx,commidx :Integer;
Pressure : TPsInteger ;
ID : TPsInteger ;
Setupval : TPsInteger ;
Comval : TPsInteger ;
idx1,idx2 ,KITP4 :Integer;
begin
MyOPCProvider.AddressSpace.AutoAddApplication := False;
MyOPCProvider.AddressSpace.AutoUpdate := False;
MyOPCProvider.AddressSpace.PathSeparator := ‘/’;
MyOPCProvider.AddressSpace.IncludeProps := False;

MyOPCProvider.AddressSpace.BeginUpdate;

RootIndex := MyOPCProvider.AddressSpace.AddModule(Self, -1, ‘MyDevice’);
skzindx:= MyOPCProvider.AddressSpace.AddChild( RootIndex,’SKZ’ );
kitpindx:= MyOPCProvider.AddressSpace.AddChild( RootIndex,’KITP’ );

KITP4:= MyOPCProvider.AddressSpace.AddChild( kitpindx,’KITP4′);
Pressure := TPsInteger.Create(nil); Pressure.Value:= 0;
idx:= MyOPCProvider.AddressSpace.AddVariable( KITP4 , Pressure, ‘Pressure’);
// idx=4 !!

for i:=1 to 10 do begin
STATIONidx:= MyOPCProvider.AddressSpace.AddChild( skzindx,’STATION’+inttostr(i) );
softidx:= MyOPCProvider.AddressSpace.AddChild( STATIONidx,’soft’ );
hardidx:= MyOPCProvider.AddressSpace.AddChild( STATIONidx,’hard’ );
// and here idx=4 !!
Pressure := TPsInteger.Create(nil); Pressure.Value:= 0;
idx:= MyOPCProvider.AddressSpace.AddVariable( hardidx , Pressure, ‘Pressure’);
ID := TPsInteger.Create(nil); ID.Value:= 0;
idx:= MyOPCProvider.AddressSpace.AddVariable( softidx , ID, ‘ID’);
setupidx:= MyOPCProvider.AddressSpace.AddChild( STATIONidx,’setup’ );
setupval := TPsInteger.Create(nil); setupval.Value:= 0;
idx:= MyOPCProvider.AddressSpace.AddVariable(setupidx , Setupval, ‘setupval’);
commidx := MyOPCProvider.AddressSpace.AddChild( STATIONidx,’comm’ );
comval := TPsInteger.Create(nil); comval.Value:= 0;
idx:= MyOPCProvider.AddressSpace.AddVariable(commidx , Comval, ‘Comm’);
end;

idx:= MyOPCProvider.AddressSpace.FindChild(kitpindx ,’KITP4′); // NOT FIND !!!
idx1:= MyOPCProvider.AddressSpace.FindChild(idx,’Pressure’);

What am I doing wrong.?
A second question . As finding the numeric ID of the desired tag to get the tag itself and change its value.
I have not found a suitable function ?