RobotStudio event

InterBus

Hi!!
I have a new IRB6640, and i need to configure the interbus Master and Slave for it. 
Through RobotStudio,  need to add 2 DeviceNet Devices (1 As Master of the hand, 1 as Slave of PLC) from template DSQC 351B IBS Adapter ? Or only 1 Device for both? And then, i need to configure the Interbus card (Phoneix Contact) using IBS CMD software?

HELP PLEASE!!!! 

THANKS