Hi,
As you are asking if the simulator is completely integrated into CCES I assume you are looking to run CCES from the command line from an automation point of view? If so then there is currently no native automation interface for CrossCore Embedded Studio meaning your unable to start a simulation session from the command line. However, there is a Third Party product called TESSY - from one of our partners, Razorcat - that supports CrossCore Embedded Studio for Unit Testing.
More information is available here - Tessy from Razorcat. and here Compilers and Debuggers/Emulators supported by TESSY
It is our intention to provide an automation interface in a future release of the CrossCore Embedded Studio tools, however there is no schedule available at present.
I hope this helps.
Regards,
Colin.