FSQL and AB PLC

No, for FactorySQL you can only use an OPC-DA server like RSLinx, Kepware or Matrikon. I would recommend using Ignition which has the SQL Bridge module. The SQL Bridge module is the same thing as FactorySQL and Ignition has built-in drivers to:

Allen-Bradley TCP
Siemens TCP
Modbus TCP

You can also connect to any other OPC-DA or OPC-UA server.