Hello @youngkugpark ,
Thank you for noticing this behavior. Indeed there is a bug there not displaying all of the CAN instances on some of the blocks.
Make sure you are using our latest MPC57xx 3.2.0 version by typing the 'ver' command under Matlab. The output should contain the following line:
Model-Based Design Toolbox for MPC57xx Series Version 3.2.0 (R2016a-R2020a)
Please backup first and then replace the mbd_mpc574x_ec_toolbox.mdl file under {Toolbox addons install path}\src\mbdtbx_mpc574x\mbdtbx_mpc574x and reply if this solved the issue.
Hope this helps,
Marius