PAC Display can log information to your ODBC database, see this Tech Tip re: PAC Display Pro 9.4.
But I think you're asking about going the other way, with PAC Display pulling information from the database?
Can you tell us more about what you have in mind? I'm not sure what you mean by "Do not pass the controller"?
Are you saying you want to skip the controller, no PAC involved here?
FYI - since PAC Display is an OPC-DA client, you could use other middleware like an OPC Server/communications platform that supports SQL. But I'd really like to understand your "big picture" here?