Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: SDS Weight Scale
ALEMBIC_SDS_WEIGHT_SCALEParameter: Path to Alembic File
ALEMBIC_PATHParameter: ALEMBIC_PATH_STATE
ALEMBIC_PATH_STATEParameter: Object Identifier
ALEMBIC_IDENTIFIERParameter: ALEMBIC_IDENT_STATE
ALEMBIC_IDENT_STATEParameter: Use Animation
ALEMBIC_USE_ANIMATIONParameter: Frame
ALEMBIC_ANIMATION_FRAMEParameter: Interpolation
ALEMBIC_INTERPOLATIONParameter: Offset
ALEMBIC_ANIMATION_OFFSETParameter: Mode
ALEMBIC_ANIMATION_MODEParameter: Speed
ALEMBIC_ANIMATION_SPEEDParameter: Reset
ALEMBIC_ANIMATION_RESETParameter: Remapping Curve
ALEMBIC_ANIMATION_CURVEParameter: Override Object for Rendering
ALEMBIC_OVERRIDE_FOR_RENDERINGParameter: Use Original Path
ALEMBIC_USE_ORIGINAL_PATHParameter: Path to Alembic File
ALEMBIC_PATH_FOR_RENDERINGParameter: ALEMBIC_PATH_STATE_RENDERING
ALEMBIC_PATH_STATE_RENDERINGParameter: Object Identifier
ALEMBIC_IDENTIFIER_FOR_RENDERINGParameter: ALEMBIC_IDENT_STATE_RENDERING
ALEMBIC_IDENT_STATE_RENDERINGParameter: Update Transform
ALEMBIC_UPDATE_XFORMParameter: Update Geometry
ALEMBIC_UPDATE_GEOMETRYParameter: Visibility
ALEMBIC_USE_VISIBILITYParameter: Normals
ALEMBIC_USE_NORMALSParameter: UV Set
ALEMBIC_USE_UVSParameter: Face Sets
ALEMBIC_USE_FACESETSParameter: Color Maps
ALEMBIC_USE_COLORMAPSParameter: Creases and Corners
ALEMBIC_USE_SDSWEIGHTSParameter: Other Attributes
ALEMBIC_USE_OTHERATTRParameter: Camera Attributes
ALEMBIC_USE_CAMERAPARAMSParameter: Instance
ALEMBIC_INSTANCE