SIL3 SW KIT Evaluation_Ver.2.12_RX66N_E


I'm evaluating  Functional Safety Platform Software (PL-SW software evaluation Ver 2.12) on R5F566NDDDFC.   

I Simply configured SCI6 Rx Interrupt in app1 user in the PL-SW. After receiving a few characters an overrun error 

appears in serial status register and reception stops. I think I didn't understand the use of interrupts in PL_SW software. If only in user app1 window 

time SCI6 Rx interrupt is accepted, how can I avoid losing characters?