You can not use the PCI-6013 board with LabVIEW Real-Time.
We offer three platforms for LabVIEW Real-time. PXI embedded controllers, 7030 data-acquisition plug-in boards (7030/xxxx) and FieldPoint. For more information on these options go to www.ni.com/products and then choose Real-Time from the menu on the left. There are PCI versions of the 7030 boards. Each 7030 board has a data-acquistion board attached to it (6030E, 6040E or 6533). When you embed a LabVIEW Real-Time program on the 7030 you will be able to access the daughter board. You can not access other boards from the embedded program. If you want to use several daq cards in your real-time system I would recommend a PXI chassi and PXI daq boards.