Hi zhangjing711@126.com,
The RAppID BL is the tool that loads the application into the MCU FLASH or SRAM memory.
It requires a special piece of SW to run from MCU flash memory prior of being able load the application generated from MATLAB/Simulink
Have you flashed the RBF (special sw) into the MPC5744P Flash memory ?
If so, then let us try a simple test. Take the *.mot file from the ***_rtw folder and program it with the RAppID_BL.exe from ...\mbdtbx_MPC574xP\tools\BootLoader location.
Does it works ?
Best regards,
Daniel