Read permission restriction on OPC DA Server

[akim]

Hello everyone,

I would like to restrict the datapoints that users can see when loging in through an OPC DA Client, is there a way to do that?
There is no an attribute _online in _auth config.

I am using WinCC OA V3.15.

[dbindernagel]

Never used this myself but you can find more info on this in the help in the following chapter:
Drivers\\OPC Data Access\\OPC server\\Accessing WinCC OA data

In general there are two datapoints group "OPCRead" and "OPCWrite".
Datapoints that are not inside these groups should not be visible via an OPC client (if I read the help correctly).

[akim]

Yes that's right. But I need to separate the DPs by clients(users). For example, create an OPCRead1 for client1 and OPCRead2 for client2.

[leoknipp]

The OPC DA server can only use 2 dp groups, the groups which have the alias "OPCRead" and "OPCWrite" are used.
There is no possibility to use separate groups for every OPC client.

Also when using a CNS view you cannot define which client shall use which view. The address space is available for all clients.

Best Regards
Leopold Knipp
Senior Support Specialist

[akim]

Ok, Thank you