Modes 0- EN_STG_INIT_MODE_NORMAL and 1- 1- EN_STG_INIT_MODE_OVERRIDE work on non-volatile and volatile settings.
Modes 2- EN_STG_INIT_MODE_RAM_ONLY and 3- EN_STG_INIT_MODE_RAM_ONLY_OVERRIDE only work on volatile settings. Non-volatile settings are not checked at all.
Modes 0- EN_STG_INIT_MODE_NORMAL and 2- EN_STG_INIT_MODE_RAM_ONLY cause conditional initialization of settings according to their Initialization Mode. If it is Initialize Always, then this setting is initialized unconditionally, if it is Initialize When Invalid, then this setting will be initialized only if its current value is invalid (EN_STG_STATUS_INVALID) or corrupted (EN_STG_STATUS_FAILURE).
Modes 1- EN_STG_INIT_MODE_OVERRIDE and 3- EN_STG_INIT_MODE_RAM_ONLY_OVERRIDE cause initialization of settings regardless of their validity.