Hi Tomas,
Thanks a lot for your professional feedback, i understand how to choose the safety mechanism to implement.
And i also find that some SIR is not mapping to SM in safety manual. If it is necessary for system integrator to implement these SIR, such as SIR_07 of chapter 5.1.4 I2C commination. SIR_07 has no impact to SM39. SIR_07:It is the responsibility of of the system integrator to enable secure write function on I2C communication.